History of agriculture
The history of agriculture records the domestication of plants and animals and the development and dissemination of techniques for raising them productively. Agriculture began independently in different parts of the globe, and included a diverse range of taxa. At least eleven separate regions of the Old and New World were involved as independent centers of origin.
Wild grains were collected and eaten from at least 20,000 BC. Rye was cultivated by at least 11,050 BC in Mesopotamia. From around 9,500 BC, the eight Neolithic founder crops—emmer wheat, einkorn wheat, hulled barley, peas, lentils, bitter vetch, chick peas, and flax—were cultivated in the Levant. Rice was domesticated in China by 6,200 BC with earliest known cultivation from 5,700 BC, followed by mung, soy and azuki beans. Pigs were domesticated in Mesopotamia around 11,000 BC, followed by sheep between 11,000 and 9,000 BC. Cattle were domesticated from the wild aurochs in the areas of modern Turkey and Pakistan around 8,500 BC. Sugarcane and some root vegetables were domesticated in New Guinea around 7,000 BC. Sorghum was domesticated in the Sahel region of Africa by 5,000 BC. In the Andes of South America, the potato was domesticated between 8,000 and 5,000 BC, along with beans, coca, llamas, alpacas, and guinea pigs. Bananas were cultivated and hybridized in the same period in Papua New Guinea. In Mesoamerica, wild teosinte was domesticated to maize by 4,000 BC. Cotton was domesticated in Peru by 3,600 BC. Camels were domesticated late, perhaps around 3,000 BC.
The Bronze Age, from c. 3300 BC, witnessed the intensification of agriculture in civilizations such as Mesopotamian Sumer, ancient Egypt, the Indus Valley Civilisation of South Asia, ancient China, and ancient Greece. During the Iron Age and era of classical antiquity, the expansion of ancient Rome, both the Republic and then the Empire, throughout the ancient Mediterranean and Western Europe built upon existing systems of agriculture while also establishing the manorial system that would become a bedrock of medieval agriculture. In the Middle Ages, both in the Islamic world and in Europe, agriculture was transformed with improved techniques and the diffusion of crop plants, including the introduction of sugar, rice, cotton and fruit trees such as the orange to Europe by way of Al-Andalus. After the voyages of Christopher Columbus in 1492, the Columbian exchange brought New World crops such as maize, potatoes, sweet potatoes, and manioc to Europe, and Old World crops such as wheat, barley, rice, and turnips, and livestock including horses, cattle, sheep, and goats to the Americas.
Irrigation, crop rotation, and fertilizers were introduced soon after the Neolithic Revolution and developed much further in the past 200 years, starting with the British Agricultural Revolution. Since 1900, agriculture in the developed nations, and to a lesser extent in the developing world, has seen large rises in productivity as human labour has been replaced by mechanization, and assisted by synthetic fertilizers, pesticides, and selective breeding. The Haber-Bosch process allowed the synthesis of ammonium nitrate fertilizer on an industrial scale, greatly increasing crop yields. Modern agriculture has raised social, political, and environmental issues including water pollution, biofuels, genetically modified organisms, tariffs and farm subsidies. In response, organic farming developed in the twentieth century as an alternative to the use of synthetic pesticides.
Scholars have developed a number of hypotheses to explain the historical origins of agriculture. Studies of the transition from hunter-gatherer to agricultural societies indicate an antecedent period of intensification and increasing sedentism; examples are the Natufian culture in the Levant, and the Early Chinese Neolithic in China. Current models indicate that wild stands that had been harvested previously started to be planted, but were not immediately domesticated.
Localised climate change is the favoured explanation for the origins of agriculture in the Levant. When major climate change took place after the last ice age (c. 11,000 BC), much of the earth became subject to long dry seasons. These conditions favoured annual plants which die off in the long dry season, leaving a dormant seed or tuber. An abundance of readily storable wild grains and pulses enabled hunter-gatherers in some areas to form the first settled villages at this time.
Early people began altering communities of flora and fauna for their own benefit through means such as fire-stick farming and forest gardening very early. Exact dates are hard to determine, as people collected and ate seeds before domesticating them, and plant characteristics may have changed during this period without human selection. An example is the semi-tough rachis and larger seeds of cereals from just after the Younger Dryas (about 9,500 BC) in the early Holocene in the Levant region of the Fertile Crescent. Monophyletic characteristics were attained without any human intervention, implying that apparent domestication of the cereal rachis could have occurred quite naturally.
Agriculture began independently in different parts of the globe, and included a diverse range of taxa. At least 11 separate regions of the Old and New World were involved as independent centers of origin. Some of the earliest known domestications were of animals. Domestic pigs had multiple centres of origin in Eurasia, including Europe, East Asia and Southwest Asia, where wild boar were first domesticated about 10,500 years ago. Sheep were domesticated in Mesopotamia between 11,000 and 9,000 BC. Cattle were domesticated from the wild aurochs in the areas of modern Turkey and Pakistan around 8,500 BC. Camels were domesticated late, perhaps around 3,000 BC.
It was not until after 9,500 BC that the eight so-called founder crops of agriculture appear: first emmer and einkorn wheat, then hulled barley, peas, lentils, bitter vetch, chick peas and flax. These eight crops occur more or less simultaneously on Pre-Pottery Neolithic B (PPNB) sites in the Levant, although wheat was the first to be grown and harvested on a significant scale. At around the same time (9400 BC), parthenocarpic fig trees were domesticated.
Rye was cultivated in Mesopotamia by at least 11,050 BC. By 7,000 BC, the Sumerians systematized and scaled up sowing and harvesting in Mesopotamia's fertile soil. By 8,000 BC, farming was entrenched on the banks of the River Nile. About this time, agriculture was developed independently in the Far East, probably in China, with rice rather than wheat as the primary crop. Maize was domesticated from the wild grass teosinte in West Mexico by 6,700 BC. The potato (8,000 BC), tomato, pepper (4,000 BC), squash (8,000 BC) and several varieties of bean (8,000 BC onwards) were domesticated in the New World.
Agriculture was independently developed on the island of New Guinea. Banana cultivation of Musa acuminata, including hybridization, dates back to 5,000 BC, and possibly to 8,000 BC, in Papua New Guinea.
Bees were kept for honey in the Middle East around 7,000 BC. Archaeological evidence from various sites on the Iberian peninsula suggest the domestication of plants and animals between 6,000 and 4,500 BC. Céide Fields in Ireland, consisting of extensive tracts of land enclosed by stone walls, date to 3,500 BC and are the oldest known field systems in the world. The horse was domesticated in the Pontic steppe around 4,000 BC. In Siberia, Cannabis was in use in China in Neolithic times and may have been domesticated there; it was in use both as a fibre for ropemaking and as a medicine in Ancient Egypt by about 2,350 BC.
In China, millet and rice and were domesticated by 6,200 BC; the earliest known cultivation of rice is from 5,700 BC. They were followed by mung, soy and azuki beans. In the Sahel region of Africa, local rice and sorghum were domesticated by 5,000 BC. Kola nut and coffee were domesticated in Africa. In New Guinea, ancient Papuan peoples began practicing agriculture around 7,000 BC, domesticating sugarcane and taro. In the Indus Valley from the eighth millennium BC onwards at Mehrgarh, 2-row and 6-row barley were cultivated, along with einkorn, emmer, and durum wheats, and dates. In the earliest levels of Merhgarh, wild game such as gazelle, swamp deer, blackbuck, chital, wild ass, wild goat, wild sheep, boar, and nilgai were all hunted for food. These are successively replaced by domesticated sheep, goats, and humped zebu cattle by the fifth millennium BC, indicating the gradual transition from hunting and gathering to agriculture. Maize and squash were domesticated in Mesoamerica; potato in South America, and sunflower in the Eastern Woodlands of North America.
Sumerian farmers grew the cereals barley and wheat, starting to live in villages from about 8,000 BC. Given the low rainfall of the region, agriculture relied on the Tigris and Euphrates rivers. Irrigation canals leading from the rivers permitted the growth of cereals in large enough quantities to support cities. The first ploughs appear in pictographs from Uruk around 3,000 BC; seed-ploughs that funneled seed into the ploughed furrow appear on seals around 2300 BC. Vegetable crops included chickpeas, lentils, peas, beans, onions, garlic, lettuce, leeks and mustard. They grew fruits including dates, grapes, apples, melons, and figs. Alongside their farming, Sumerians also caught fish and hunted fowl and gazelle. The meat of sheep, goats, cows and poultry was eaten, mainly by the elite. Fish was preserved by drying, salting and smoking.
The civilization of Ancient Egypt was indebted to the Nile River and its dependable seasonal flooding. The river's predictability and the fertile soil allowed the Egyptians to build an empire on the basis of great agricultural wealth. Egyptians were among the first peoples to practice agriculture on a large scale, starting in the pre-dynastic period from the end of the Paleolithic into the Neolithic, between around 10,000 and 4,000 BC. This was made possible with the development of basin irrigation. Their staple food crops were grains such as wheat and barley, alongside industrial crops such as flax and papyrus.
Wheat, barley, and jujube were domesticated in the Indian subcontinent by 9,000 BC, soon followed by sheep and goats. Barley and wheat cultivation—along with the domestication of cattle, primarily sheep and goats—followed in Mehrgarh culture by 8,000–6,000 BC. This period also saw the first domestication of the elephant. Pastoral farming in India included threshing, planting crops in rows—either of two or of six—and storing grain in granaries. Cotton was cultivated by the 5th-4th millennium BC. By the 5th millennium BC, agricultural communities became widespread in Kashmir. Irrigation was developed in the Indus Valley Civilization by around 4,500 BC. The size and prosperity of the Indus civilization grew as a result of this innovation, leading to more thoroughly planned settlements which used drainage and sewers. Archeological evidence of an animal-drawn plough dates back to 2,500 BC in the Indus Valley Civilization.
Records from the Warring States, Qin Dynasty, and Han Dynasty provide a picture of early Chinese agriculture from the 5th century BC to 2nd century AD which included a nationwide granary system and widespread use of sericulture. An important early Chinese book on agriculture is the Qimin Yaoshu of AD 535, written by Jia Sixie. Jia's writing style was straightforward and lucid relative to the elaborate and allusive writing typical of the time. Jia's book was also very long, with over one hundred thousand written Chinese characters, and it quoted many other Chinese books that were written previously, but no longer survive. The contents of Jia's 6th century book include sections on land preparation, seeding, cultivation, orchard management, forestry, and animal husbandry. The book also includes peripherally related content covering trade and culinary uses for crops. The work and the style in which it was written proved influential on later Chinese agronomists, such as Wang Zhen and his groundbreaking Nong Shu of 1313.
For agricultural purposes, the Chinese had innovated the hydraulic-powered trip hammer by the 1st century BC. Although it found other purposes, its main function to pound, decorticate, and polish grain that otherwise would have been done manually. The Chinese also began using the square-pallet chain pump by the 1st century AD, powered by a waterwheel or oxen pulling an on a system of mechanical wheels. Although the chain pump found use in public works of providing water for urban and palatial pipe systems, it was used largely to lift water from a lower to higher elevation in filling irrigation canals and channels for farmland. By the end of the Han dynasty in the late 2nd century, heavy ploughs had been developed with iron ploughshares and mouldboards. These would slowly spread west, revolutionizing farming in Northern Europe by the 10th century. (Glick, however, argues for a development of the Chinese plough as late as the 9th century, implying its spread east from similar designs known in Italy by the 7th century.)
Asian rice was domesticated 8,200–13,500 years ago in China, with a single genetic origin from the wild rice Oryza rufipogon, in the Pearl River valley region of China. Rice cultivation then spread to South and Southeast Asia.
Ancient Greece and Hellenistic worldEdit
The major cereal crops of the ancient Mediterranean region were wheat, emmer, and barley, while common vegetables included peas, beans, fava, and olives, dairy products came mostly from sheep and goats, and meat, which was consumed on rare occasion for most people, usually consisted of pork, beef, and lamb. Agriculture in ancient Greece was hindered by the topography of mainland Greece that only allowed for roughly 10% of the land to be cultivated properly, necessitating the specialized exportation of oil and wine and importation of grains from Thrace (centered in what is now Bulgaria) and the Greek colonies of southern Russia. During the Hellenistic period, the Ptolemaic Empire controlled Egypt, Cyprus, Phoenicia, and Cyrenaica, major grain-producing regions that mainland Greeks depended on for subsistence, while the Ptolemaic grain market also played a critical role in the rise of the Roman Republic. In the Seleucid Empire, Mesopotamia was a crucial area for the production of wheat, while nomadic animal husbandry was also practiced in other parts.
In the Greco-Roman world of Classical antiquity, Roman agriculture was built on techniques originally pioneered by the Sumerians, transmitted to them by subsequent cultures, with a specific emphasis on the cultivation of crops for trade and export. The Romans laid the groundwork for the manorial economic system, involving serfdom, which flourished in the Middle Ages. The farm sizes in Rome can be divided into three categories. Small farms were from 18-88 iugera (one iugerum is equal to about 0.65 acre). Medium-sized farms were from 80-500 iugera (singular iugerum). Large estates (called latifundia) were over 500 iugera. The Romans had four systems of farm management: direct work by owner and his family; slaves doing work under supervision of slave managers; tenant farming or sharecropping in which the owner and a tenant divide up a farm’s produce; and situations in which a farm was leased to a tenant.
In Mesoamerica, wild teosinte was transformed through human selection into the ancestor of modern maize, more than 6,000 years ago. It gradually spread across North America and was the major crop of Native Americans at the time of European exploration. Other Mesoamerican crops include hundreds of varieties of locally domesticated squash and beans, while cocoa, also domesticated in the region, was a major crop. The turkey, one of the most important meat birds, was probably domesticated in Mexico or the U.S. Southwest.
In Mesoamerica, the Aztecs were active farmers and had an agriculturally focused economy. The land around Lake Texcoco was fertile, but not large enough to produce the amount of food needed for the population of their expanding empire. The Aztecs developed irrigation systems, formed terraced hillsides, fertilized their soil, and developed chinampas or artificial islands, also known as "floating gardens". The Mayas between 400 BC to 900 AD used extensive canal and raised field systems to farm swampland on the Yucatán Peninsula.
In the Andes region of South America, with civilizations including the Inca, the major crop was the potato, domesticated approximately 7,000–10,000 years ago. Coca, still a major crop to this day, was domesticated in the Andes, as were the peanut, tomato, tobacco, and pineapple. Cotton was domesticated in Peru by 3,600 BC. Animals were also domesticated, including llamas, alpacas, and guinea pigs.
The indigenous people of the Eastern U.S.A. domesticated numerous crops. Sunflowers, tobacco, varieties of squash and Chenopodium, as well as crops no longer grown, including marsh elder and little barley, were domesticated. Wild foods including wild rice and maple sugar were harvested. The domesticated strawberry is a hybrid of a Chilean and a North American species, developed by breeding in Europe and North America. Two major crops, pecans and Concord grapes, were utilized extensively in prehistoric times but do not appear to have been domesticated until the 19th century.
The indigenous people in what is now California and the Pacific Northwest practiced various forms of forest gardening and fire-stick farming in the forests, grasslands, mixed woodlands, and wetlands, ensuring that desired food and medicine plants continued to be available. The natives controlled fire on a regional scale to create a low-intensity fire ecology which prevented larger, catastrophic fires and sustained a low-density agriculture in loose rotation; a sort of "wild" permaculture.
A system of companion planting called the Three Sisters was developed in North America. Three crops that complemented each other were planted together: winter squash, maize (corn), and climbing beans (typically tepary beans or common beans). The maize provides a structure for the beans to climb, eliminating the need for poles. The beans provide the nitrogen to the soil that the other plants use, and the squash spreads along the ground, blocking the sunlight, helping prevent the establishment of weeds. The squash leaves also act as a "living mulch".
From the time of British colonization of Australia in 1788, Indigenous Australians were characterised as nomadic hunter-gatherers who did not engage in agriculture, despite evidence to the contrary. In 1969, the archaeologist Rhys Jones proposed that Indigenous Australians engaged in systematic burning as a way of enhancing natural productivity, what has been termed fire-stick farming. In the 1970s and 1980s archaeological research in south west Victoria established that the Gunditjmara and other groups had developed sophisticated eel farming and fish trapping systems over a period of nearly 5,000 years. The archaeologist Harry Lourandos suggested in the 1980s that there was evidence of 'intensification' in progress across Australia, a process that appeared to have continued through the preceding 5,000 years. These concepts led the historian Bill Gammage to argue that in effect the whole continent was a managed landscape.
In two regions of Australia, the central west coast and eastern central Australia, forms of early agriculture may have been practiced. People living in permanent settlements of over 200 residents sowed or planted on a large scale and stored the harvested food. The Nhanda and Amangu of the central west coast grew yams (Dioscorea hastifolia), while various groups in eastern central Australia (the Corners Region) planted and harvested bush onions (yaua - Cyperus bulbosus), native millet (cooly, tindil – Panicum decompositum) and a sporocarp, ngardu (Marsilea drummondii).:281–304
Middle Ages and Early ModernEdit
From the 8th century, the medieval Islamic world underwent a transformation in agricultural practice, described by the historian Andrew Watson as the Arab agricultural revolution. This transformation was driven by a number of factors including the diffusion of many crops and plants along Muslim trade routes, the spread of more advanced farming techniques, and an agricultural-economic system which promoted increased yields and efficiency. The shift in agricultural practice changed the economy, population distribution, vegetation cover, agricultural production, population levels, urban growth, the distribution of the labour force, cooking, diet, and clothing across the Islamic world. Muslim traders covered much of the Old World, and trade enabled the diffusion of many crops, plants and farming techniques across the region, as well as the adaptation of crops, plants and techniques from beyond the Islamic world. This diffusion introduced major crops to Europe by way of Al-Andalus, along with the techniques for their cultivation and cuisine. Sugar cane, rice, and cotton were among the major crops transferred, along with citrus and other fruit trees, nut trees, vegetables such as aubergine, spinach and chard, and the use of spices such as cumin, coriander, nutmeg and cinnamon. Intensive irrigation, crop rotation, and agricultural manuals were widely adopted. Irrigation, partly based on Roman technology, made use of noria water wheels, water mills, dams and reservoirs.
The Middle Ages saw further improvements in agriculture. Monasteries spread throughout Europe and became important centers for the collection of knowledge related to agriculture and forestry. The manorial system allowed large landowners to control their land and its laborers, in the form of peasants or serfs. During the medieval period, the Arab world was critical in the exchange of crops and technology between the European, Asia and African continents. Besides transporting numerous crops, they introduced the concept of summer irrigation to Europe and developed the beginnings of the plantation system of sugarcane growing through the use of slaves for intensive cultivation.
By AD 900, developments in iron smelting allowed for increased production in Europe, leading to developments in the production of agricultural implements such as ploughs, hand tools and horse shoes. The carruca heavy plough improved on the earlier scratch plough, with the adoption of the Chinese mouldboard plough to turn over the heavy, wet soils of northern Europe. This led to the clearing of northern European forests and an increase in agricultural production, which in turn led to an increase in population. At the same time, some farmers in Europe moved from a two field crop rotation to a three field crop rotation in which one field of three was left fallow every year. This resulted in increased productivity and nutrition, as the change in rotations permitted nitrogen-fixing legumes such as peas, lentils and beans. Improved horse harnesses and the whippletree further improved cultivation.
Crops included wheat, rye, barley and oats. Peas, beans, and vetches became common from the 13th century onward as a fodder crop for animals and also for their nitrogen-fixation fertilizing properties. Crop yields peaked in the 13th century, and stayed more or less steady until the 18th century. Though the limitations of medieval farming were once thought to have provided a ceiling for the population growth in the Middle Ages, recent studies have shown that the technology of medieval agriculture was always sufficient for the needs of the people under normal circumstances, and that it was only during exceptionally harsh times, such as the terrible weather of 1315–17, that the needs of the population could not be met.
After 1492, a global exchange of previously local crops and livestock breeds occurred. Maize, potatoes, sweet potatoes and manioc were the key crops that spread from the New World to the Old, while varieties of wheat, barley, rice and turnips traveled from the Old World to the New. There had been few livestock species in the New World, with horses, cattle, sheep and goats being completely unknown before their arrival with Old World settlers. Crops moving in both directions across the Atlantic Ocean caused population growth around the world and a lasting effect on many cultures. Maize and cassava were introduced from Brazil into Africa by Portuguese traders in the 16th century, becoming staple foods, replacing native African crops.
After its introduction from South America to Spain in the late 1500s, the potato became a staple crop throughout Europe by the late 1700s. The potato allowed farmers to produce more food, and initially added variety to the European diet. The increased supply of food reduced disease, increased births and reduced mortality, causing a population boom throughout the British Empire, the US and Europe. The introduction of the potato also brought about the first intensive use of fertilizer, in the form of guano imported to Europe from Peru, and the first artificial pesticide, in the form of an arsenic compound used to fight Colorado potato beetles. Before the adoption of the potato as a major crop, the dependence on grain had caused repetitive regional and national famines when the crops failed, including 17 major famines in England between 1523 and 1623. The resulting dependence on the potato however caused the European Potato Failure, a disastrous crop failure from disease that resulted in widespread famine and the death of over one million people in Ireland alone.
British agricultural revolutionEdit
Between the 16th century and the mid-19th century, Britain saw a large increase in agricultural productivity and net output. New agricultural practices like enclosure, mechanization, four-field crop rotation to maintain soil nutrients, and selective breeding enabled an unprecedented population growth to 5.7 million in 1750, freeing up a significant percentage of the workforce, and thereby helped drive the Industrial Revolution. The productivity of wheat went up from about 19 bushels per acre in 1720 to around 30 bushels by 1840, marking a major turning point in history.
Advice on more productive techniques for farming began to appear in England in the mid-17th century, from writers such as Samuel Hartlib, Walter Blith and others. The main problem in sustaining agriculture in one place for a long time was the depletion of nutrients, most importantly nitrogen levels, in the soil. To allow the soil to regenerate, productive land was often let fallow and in some places crop rotation was used. The Dutch four-field rotation system was popularised by the British agriculturist Charles Townshend in the 18th century. The system (wheat, turnips, barley and clover), opened up a fodder crop and grazing crop allowing livestock to be bred year-round. The use of clover was especially important as the legume roots replenished soil nitrates.
The mechanisation and rationalisation of agriculture was another important factor. Robert Bakewell and Thomas Coke introduced selective breeding, and initiated a process of inbreeding to maximise desirable traits from the mid 18th century, such as the New Leicester sheep. Machines were invented to improve the efficiency of various agricultural operation, such as Jethro Tull's seed drill of 1701 that mechanised seeding at the correct depth and spacing and Andrew Meikle's threshing machine of 1784. Ploughs were steadily improved, from Joseph Foljambe's Rotherham iron plough in 1730 to James Small's improved "Scots Plough" metal in 1763. In 1789 Ransomes, Sims & Jefferies was producing 86 plough models for different soils. Powered farm machinery began with Richard Trevithick's stationary steam engine, used to drive a threshing machine, in 1812. Mechanisation spread to other farm uses through the 19th century. The first petrol-driven tractor was built in America by John Froelich in 1892.
The scientific investigation of fertilization began at the Rothamsted Experimental Station in 1843 by John Bennet Lawes. He investigated the impact of inorganic and organic fertilizers on crop yield and founded one of the first artificial fertilizer manufacturing factories in 1842. Fertilizer, in the shape of sodium nitrate deposits in Chile, was imported to Britain by John Thomas North as well as guano (birds droppings). The first commercial process for fertilizer production was the obtaining of phosphate from the dissolution of coprolites in sulphuric acid.
Dan Albone constructed the first commercially successful gasoline-powered general purpose tractor in 1901, and the 1923 International Harvester Farmall tractor marked a major point in the replacement of draft animals (particularly horses) with machines. Since that time, self-propelled mechanical harvesters (combines), planters, transplanters and other equipment have been developed, further revolutionizing agriculture. These inventions allowed farming tasks to be done with a speed and on a scale previously impossible, leading modern farms to output much greater volumes of high-quality produce per land unit.
The Haber-Bosch method for synthesizing ammonium nitrate represented a major breakthrough and allowed crop yields to overcome previous constraints. It was first patented by German chemist Fritz Haber. In 1910 Carl Bosch, while working for German chemical company BASF, successfully commercialized the process and secured further patents. In the years after World War II, the use of synthetic fertilizer increased rapidly, in sync with the increasing world population.
Collective farming was widely practiced in the Soviet Union, the Eastern Bloc countries, China, and Vietnam, starting in the 1930s in the Soviet Union; one result was the Soviet famine of 1932–33.
In the past century agriculture has been characterized by increased productivity, the substitution of synthetic fertilizers and pesticides for labor, water pollution, and farm subsidies. Other applications of scientific research since 1950 in agriculture include gene manipulation, hydroponics, and the development of economically viable biofuels such as ethanol.
In recent years there has been a backlash against the external environmental effects of conventional agriculture, resulting in the organic movement. Famines continued to sweep the globe through the 20th century. Through the effects of climactic events, government policy, war and crop failure, millions of people died in each of at least ten famines between the 1920s and the 1990s.
The historical processes that have allowed agricultural crops to be cultivated and eaten well beyond their centers of origin continues in the present through globalization. On average, 68.7% of a nation's food supplies and 69.3% of its agricultural production are of crops with foreign origins.
The Green Revolution was a series of research, development, and technology transfer initiatives, between the 1940s and the late 1970s. It increased agriculture production around the world, especially from the late 1960s. The initiatives, led by Norman Borlaug and credited with saving over a billion people from starvation, involved the development of high-yielding varieties of cereal grains, expansion of irrigation infrastructure, modernization of management techniques, distribution of hybridized seeds, synthetic fertilizers, and pesticides to farmers.
Synthetic nitrogen, along with mined rock phosphate, pesticides and mechanization, have greatly increased crop yields in the early 20th century. Increased supply of grains has led to cheaper livestock as well. Further, global yield increases were experienced later in the 20th century when high-yield varieties of common staple grains such as rice, wheat, and corn were introduced as a part of the Green Revolution. The Green Revolution exported the technologies (including pesticides and synthetic nitrogen) of the developed world to the developing world. Thomas Malthus famously predicted that the Earth would not be able to support its growing population, but technologies such as the Green Revolution have allowed the world to produce a surplus of food.
Although the Green Revolution significantly increased rice yields in Asia, yield increases have not occurred in the past 15–20 years. The genetic "yield potential" has increased for wheat, but the yield potential for rice has not increased since 1966, and the yield potential for maize has "barely increased in 35 years". It takes only a decade or two for herbicide-resistant weeds to emerge, and insects become resistant to insecticides within about a decade, delayed somewhat by crop rotation.
For most of its history, agriculture has been organic, without synthetic fertilisers or pesticides, and without GMOs. With the advent of chemical agriculture, Rudolf Steiner called for farming without synthetic pesticides, and his Agriculture Course of 1924 laid the foundation for biodynamic agriculture. Lord Northbourne developed these ideas and presented his manifesto of organic farming in 1940. This became a worldwide movement, and organic farming is now practiced in most countries.
- Hillman, G. C. (1996) "Late Pleistocene changes in wild plant-foods available to hunter-gatherers of the northern Fertile Crescent: Possible preludes to cereal cultivation". In D. R. Harris (ed.) The Origins and Spread of Agriculture and Pastoralism in Eurasia, UCL Books, London, pp.159-203; Sato, Y. (2003) "Origin of rice cultivation in the Yangtze River basin". In Y. Yasuda (ed.) The Origins of Pottery and Agriculture, Roli Books, New Delhi, p. 196
- Gerritsen, R. (2008). Australia and the Origins of Agriculture. Archaeopress. pp. 29–30.
- "The Development of Agriculture". National Geographic. 2016. Archived from the original on 14 April 2016. Retrieved 15 June 2016.
- "Climate". National Climate Data Center. Retrieved 1 December 2013.
- "The Development of Agriculture". National Geographic. 2016. Archived from the original on 14 April 2016. Retrieved 20 June 2016.
- Gammage, Bill (October 2011). The Biggest Estate on Earth: How Aborigines made Australia. Allen & Unwin. ISBN 9781742377483.
- Douglas John McConnell (2003). The Forest Farms of Kandy: And Other Gardens of Complete Design. p. 1. ISBN 978-0-7546-0958-2.
- McConnell, Douglas John (1992). The forest-garden farms of Kandy, Sri Lanka. p. 1. ISBN 978-92-5-102898-8.
- Allaby, Robin G.; Fuller, Dorian Q.; Brown, Terence A. (2008). "The genetic expectations of a protracted model for the origins of domesticated crops". Proceedings of the National Academy of Sciences. 105 (37): 13982–13986. Bibcode:2008PNAS..10513982A. doi:10.1073/pnas.0803780105. PMC . PMID 18768818.
- Larson, G.; Piperno, D. R.; Allaby, R. G.; Purugganan, M. D.; Andersson, L.; Arroyo-Kalin, M.; Barton, L.; Climer Vigueira, C.; Denham, T.; Dobney, K.; Doust, A.N.; Gepts, P.; Gilbert, M. T. P.; Gremillion, K. J.; Lucas, L.; Lukens, L.; Marshall, F. B.; Olsen, K.M.; Pires, J.C.; Richerson, P.J.; Rubio De Casas, R.; Sanjur, O.I.; Thomas, M.G.; Fuller, D.Q. (2014). "Current perspectives and the future of domestication studies". Proceedings of the National Academy of Sciences. 111 (17): 6139. Bibcode:2014PNAS..111.6139L. doi:10.1073/pnas.1323964111. PMC . PMID 24757054.
- Larson, Greger; Dobney, Keith; Albarella, Umberto; Fang, Meiying; Matisoo-Smith, Elizabeth; Robins, Judith; Lowden, Stewart; Finlayson, Heather; Brand, Tina (2005-03-11). "Worldwide Phylogeography of Wild Boar Reveals Multiple Centers of Pig Domestication". Science. 307 (5715): 1618–1621. doi:10.1126/science.1106927. PMID 15761152.
- Larson, Greger; Albarella, Umberto; Dobney, Keith; Rowley-Conwy, Peter; Schibler, Jörg; Tresset, Anne; Vigne, Jean-Denis; Edwards, Ceiridwen J.; Schlumbaum, Angela (2007-09-25). "Ancient DNA, pig domestication, and the spread of the Neolithic into Europe". Proceedings of the National Academy of Sciences. 104 (39): 15276–15281. doi:10.1073/pnas.0703411104. PMID 17855556.
- Ensminger, M.E.; Parker, R.O. (1986). Sheep and Goat Science (Fifth ed.). Interstate Printers and Publishers. ISBN 0-8134-2464-X.
- McTavish, E.J., Decker, J.E., Schnabel, R.D., Taylor, J.F. and Hillis, D.M. (2013). "New World cattle show ancestry from multiple independent domestication events". PNAS. 110: 1398–406. Bibcode:2013PNAS..110E1398M. doi:10.1073/pnas.1303367110. PMC . PMID 23530234.
- Sapir-Hen, Lidar; Erez Ben-Yosef (2013). "The Introduction of Domestic Camels to the Southern Levant: Evidence from the Aravah Valley" (PDF). Tel Aviv. 40: 277–285. doi:10.1179/033443513x13753505864089.
- Ladizinsky, G. (1998). Plant Evolution under Domestication. Kluwer. ISBN 978-0412822100.
- Kislev, Mordechai E.; Hartmann, Anat; Bar-Yosef, Ofer. "Early Domesticated Fig in the Jordan Valley," in Science Magazine (June 2, 2006). Vol. 312, No. 5778, pp. 1372-1374.doi:10.1126/science.1125910
- Science Magazine (Dec. 15, 2006). Vol. 314, No. 5806, p. 1683. Response to Comment on 'Early Domesticated Fig in the Jordan Valley' by Mordechai E. Kislev, Anat Hartmann and Ofer Bar-Yosef. doi:10.1126/science.1132636
- Hillman, G.; Hedges, R.; Moore, A.; Colledge, S.; Pettitt, P.; Hedges; Moore; Colledge; Pettitt (2001). "New evidence of Lateglacial cereal cultivation at Abu Hureyra on the Euphrates". Holocene. 11 (4): 383–393. doi:10.1191/095968301678302823.
- Dolores, R.; Piperno, Anthony J.; Ranere, Irene Holst; Iriarte, Jose; Dickau, Ruth (2009). "Starch grain and phytolith evidence for early ninth millennium B.P. maize from the Central Balsas River Valley, Mexico". PNAS. 106 (13): 5019–5024. Bibcode:2009PNAS..106.5019P. doi:10.1073/pnas.0812525106. PMC . PMID 19307570.
- Smith, A. F. (1994). The Tomato in America: Early History, Culture, and Cookery. University of South Carolina Press. p. 13. ISBN 1-57003-000-6.
- Hirst, K. Kris. "Plant Domestication - Table of Dates and Places". About.com. Retrieved 15 June 2016.
- Denham, T. P. (2003). "Origins of Agriculture at Kuk Swamp in the Highlands of New Guinea". Science. 301 (5630): 189–193. doi:10.1126/science.1085255.
- Nelson, S. C.; Ploetz, R. C.; Kepler, A. K. (2006). "Musa species (bananas and plantains)". In Elevitch, C. R. Species Profiles for Pacific Island Agroforestry (PDF). Hōlualoa, Hawai'i: Permanent Agriculture Resources.
- Denham, T.P.; Haberle, S.G.; Lentfer, C.; Fullagar, R.; Field, J.; Therin, M.; Porch, N.; Winsborough, B. (2003). "Origins of Agriculture at Kuk Swamp in the Highlands of New Guinea". Science. 301 (5630): 189–193. doi:10.1126/science.1085255. PMID 12817084.
- Roffet-Salque, Mélanie; Regert, Martine; Evershed, Richard P.; Outram, Alan K.; Cramp, Lucy J. E.; Decavallas, Orestes; Dunne, Julie; Gerbault, Pascale; Mileto, Simona; Mirabaud, Sigrid; Pääkkönen, Mirva; Smyth, Jessica; Šoberl, Lucija; Whelton, Helen L.; Alday-Ruiz, Alfonso; Asplund, Henrik; Bartkowiak, Marta; Bayer-Niemeier, Eva; Belhouchet, Lotfi; Bernardini, Federico; Budja, Mihael; Cooney, Gabriel; Cubas, Miriam; Danaher, Ed M.; Diniz, Mariana; Domboróczki, László; Fabbri, Cristina; González-Urquijo, Jesus E.; Guilaine, Jean; et al. (2015). "Widespread exploitation of the honeybee by early Neolithic farmers". Nature. 527 (7577): 226–30. Bibcode:2015Natur.527..226R. doi:10.1038/nature15757. PMID 26560301.
- "Southern Europe, 8000–2000 B.C. Timeline of Art History". The Metropolitan Museum of Art. Archived from the original on 26 January 2007. Retrieved 2011-07-16.
- "Ceide Fields Visitor Centre, Ballycastle, County Mayo, West of Ireland". Museumsofmayo.com. Archived from the original on 2011-07-22. Retrieved 2011-07-16.
- "Ceide Fields - UNESCO World Heritage Centre". Whc.unesco.org. Retrieved 2011-07-16.
- Anthony, David W. (2007). The Horse, the Wheel, and Language: How Bronze-Age Riders from the Eurasian Steppes Shaped the Modern World. Princeton, NJ: Princeton University Press.
- Vergara, Daniela (2 December 2014). "Cannabis: Marijuana, hemp and its cultural history". Cannabis Genomics. Archived from the original on 9 April 2016. Retrieved 20 June 2016.
- Zong, Y.; When, Z.; Innes, J. B.; Chen, C.; Wang, Z.; Wang, H. (27 September 2007). "Fire and flood management of coastal swamp enabled first rice paddy cultivation in east China". Nature. 449 (7161): 459–62. doi:10.1038/nature06135. PMID 17898767.
- Molina, J.; Sikora, M.; Garud, N.; Flowers, J. M.; Rubinstein, S.; Reynolds, A.; Huang, P.; Jackson, S.; Schaal, B. A.; Bustamante, C. D.; Boyko, A. R.; Purugganan, M. D. (2011). "Molecular evidence for a single evolutionary origin of domesticated rice". Proceedings of the National Academy of Sciences. 108 (20): 8351. Bibcode:2011PNAS..108.8351M. doi:10.1073/pnas.1104686108. PMC . PMID 21536870.
- Lu, H.; Zhang, J.; Liu, K. B.; Wu, N.; Li, Y.; Zhou, K; Ye, M; Zhang, T.; et al. (2009). "Earliest domestication of common millet (Panicum miliaceum) in East Asia extended to 10,000 years ago". Proceedings of the National Academy of Sciences of the United States of America. 106 (18): 7367–72. doi:10.1073/pnas.0900158106. PMC . PMID 19383791.
- Carney, Judith (2011). Food and the African Past. In the Shadow of Slavery: Africa’s Botanical Legacy in the Atlantic World. University of California Press. p. 24. ISBN 978-0-520-94953-9.
- Murphy, Denis (2011). Plants, Biotechnology and Agriculture. CABI. pp. 153–. ISBN 978-1-84593-913-7.
- Barker, Graeme (2009). The Agricultural Revolution in Prehistory: Why Did Foragers Become Farmers?. Oxford University Press. pp. 159–161. ISBN 978-0-19-955995-4.
- Anderson, David; Goudie, Andrew; Parker, Adrian (2013). Global Environments Through the Quaternary: Exploring Environmental Change. Oxford University Press. p. 283. ISBN 978-0-19-969726-7.
- "Farming". British Museum. Archived from the original on 16 June 2016. Retrieved 15 June 2016.
- Tannahill, Reay (1968). The fine art of food. Folio Society.
- Janick, Jules. "Ancient Egyptian Agriculture and the Origins of Horticulture" (PDF). Acta Hort. 583: 23–39.
- Kees, Herman (1961). Ancient Egypt: A Cultural Topography. University of Chicago Press.
- Gupta, Anil K. in Origin of agriculture and domestication of plants and animals linked to early Holocene climate amelioration, Current Science, Vol. 87, No. 1, 10 July 2004 59. Indian Academy of Sciences.
- Baber, Zaheer (1996). The Science of Empire: Scientific Knowledge, Civilization, and Colonial Rule in India. State University of New York Press. 19. ISBN 0-7914-2919-9.
- Harris, David R. and Gosden, C. (1996). The Origins and Spread of Agriculture and Pastoralism in Eurasia: Crops, Fields, Flocks And Herds. Routledge. p.385. ISBN 1-85728-538-7.
- Possehl, Gregory L. (1996). Mehrgarh in Oxford Companion to Archaeology, edited by Brian Fagan. Oxford University Press.
- Stein, Burton (1998). A History of India. Blackwell Publishing. 47. ISBN 0-631-20546-2.
- Rodda & Ubertini (2004). The Basis of Civilization--water Science?. International Association of Hydrological Science. 279. ISBN 1-901502-57-0.
- Lal, R. (2001). "Thematic evolution of ISTRO: transition in scientific issues and research focus from 1955 to 2000". Soil and Tillage Research. 61 (1–2): 3–12 . doi:10.1016/S0167-1987(01)00184-2.
- Needham, Joseph (1986). Science and Civilization in China: Volume 6, Part 2. Taipei: Caves Books Ltd. p55-56.
- Needham, Volume 6, Part 2, 56.
- Needham, Volume 6, Part 2, 57.
- Needham, Joseph (1986). Science and Civilization in China: Volume 4, Physics and Physical Technology, Part 2, Mechanical Engineering. Taipei: Caves Books, Ltd. p184
- Needham, Volume 4, Part 2, 89, 110.
- Needham, Volume 4, Part 2, 33.
- Needham, Volume 4, Part 2, 110.
- Robert Greenberger, The Technology of Ancient China, Rosen Publishing Group, 2006, pp. 11–12.
- Wang Zhongshu, trans. by K. C. Chang and Collaborators, Han Civilization (New Haven and London: Yale University Press, 1982).
- Glick, Thomas F. (2005). Medieval Science, Technology And Medicine: An Encyclopedia. Volume 11 of The Routledge Encyclopedias of the Middle Ages Series. Psychology Press. p. 270. ISBN 0415969301.
- Huang, Xuehui; Kurata, Nori; Wei, Xinghua; Wang, Zi-Xuan; Wang, Ahong; Zhao, Qiang; Zhao, Yan; Liu, Kunyan; et al. (2012). "A map of rice genome variation reveals the origin of cultivated rice". Nature. 490 (7421): 497–501. Bibcode:2012Natur.490..497H. doi:10.1038/nature11532. PMID 23034647.
- Helmut Koester (1995), History, Culture, and Religion of the Hellenistic Age, 2nd edition, New York: Walter de Gruyter, ISBN 3-11-014693-2, pp 76-77.
- Helmut Koester (1995), History, Culture, and Religion of the Hellenistic Age, 2nd edition, New York: Walter de Gruyter, ISBN 3-11-014693-2, p 77.
- White, K. D. (1970), Roman Farming (Cornell University Press)
- Johannessen, S.; Hastorf, C. A. (eds.). Corn and Culture in the Prehistoric New World. Westview Press.
- Speller, Camilla F.; et al. (2010). "Ancient mitochondrial DNA analysis reveals complexity of indigenous North American turkey domestication". PNAS. 107 (7): 2807–2812. Bibcode:2010PNAS..107.2807S. doi:10.1073/pnas.0909724107. PMC . PMID 20133614.
- Mascarelli, Amanda (5 November 2010). "Mayans converted wetlands to farmland". Nature. doi:10.1038/news.2010.587.
- Morgan, John (6 November 2013). "Invisible Artifacts: Uncovering Secrets of Ancient Maya Agriculture with Modern Soil Science". Soil Horizons. 53 (6): 3. doi:10.2136/sh2012-53-6-lf. Archived from the original on 21 March 2015.
- Spooner, David M.; McLean, Karen; Ramsay, Gavin; Waugh, Robbie; Bryan, Glenn J. (2005). "A single domestication for potato based on multilocus amplified fragment length polymorphism genotyping". PNAS. 102 (41): 14694–99. Bibcode:2005PNAS..10214694S. doi:10.1073/pnas.0507400102. PMC . PMID 16203994.
- Office of International Affairs (1989). Lost Crops of the Incas: Little-Known Plants of the Andes with Promise for Worldwide Cultivation. nap.edu. p. 92. ISBN 030904264X.
- John Michael Francis (2005). Iberia and the Americas. ABC-CLIO. ISBN 1-85109-426-1.
- Broudy, Eric (1979). The Book of Looms: A History of the Handloom from Ancient Times to the Present. UPNE. p. 81. ISBN 978-0-87451-649-4.
- Rischkowsky, Barbara; Pilling, Dafydd (2007). The State of the World's Animal Genetic Resources for Food and Agriculture. Food & Agriculture Organization. p. 10. ISBN 978-92-5-105762-9.
- Heiser Jr, Carl B. (1992). "On possible sources of the tobacco of prehistoric Eastern North America". Current Anthropology. 33: 54–56. doi:10.1086/204032.
- Prehistoric Food Production in North America, edited by Richard I. Ford. Museum of Anthropology, University of Michigan, Anthropological Papers 75.
- Adair, Mary J. (1988) Prehistoric Agriculture in the Central Plains. Publications in Anthropology 16. University of Kansas, Lawrence.
- Smith, Andre w (2013). The Oxford Encyclopedia of Food and Drink in America. OUP USA. pp. 1–. ISBN 978-0-19-973496-2.
- Hardigan, Michael A. "P0653: Domestication History of Strawberry: Population Bottlenecks and Restructuring of Genetic Diversity through Time". Pland & Animal Genome Conference XXVI January 13–17, 2018 San Diego, California. Retrieved 28 February 2018.
- "Pecans at Texas A&M University". Pecankernel.tamu.edu. 2006-08-18. Archived from the original on 2010-05-25. Retrieved 2010-06-03.
- The History of Concord Grapes, http://www.concordgrape.org/bodyhistory.html
- Neil G. Sugihara; Jan W. Van Wagtendonk; Kevin E. Shaffer; Joann Fites-Kaufman; Andrea E. Thode, eds. (2006). "17". Fire in California's Ecosystems. University of California Press. p. 417. ISBN 978-0-520-24605-8.
- Blackburn, Thomas C. and Kat Anderson, ed. (1993). Before the Wilderness: Environmental Management by Native Californians. Ballena Press. ISBN 0879191260.
- Cunningham, Laura (2010). State of Change: Forgotten Landscapes of California. Heyday. pp. 135, 173–202. ISBN 1597141364.
- Anderson, M. Kat (2006). Tending the Wild: Native American Knowledge And the Management of California's Natural Resources. University of California Press. ISBN 0520248511.
- Wilson, Gilbert (1917). Agriculture of the Hidatsa Indians: An Indian Interpretation. Dodo Press. pp. 25 and passim. ISBN 978-1409942337. Archived from the original on 2016-03-14.
- Landon, Amanda J. (2008). "The "How" of the Three Sisters: The Origins of Agriculture in Mesoamerica and the Human Niche". Nebraska Anthropologist. University of Nebraska-Lincoln: 110–124.
- Jones, R (1969). "Fire-stick Farming". Australian Natural History. 16: 224.
- Williams, E. (1988) Complex Hunter-Gatherers: A Late Holocene Example from Temperate Australia. British Archaeological Reports, Oxford
- Lourandos, H. (1997) Continent of Hunter-Gatherers: New Perspectives in Australian Prehistory Cambridge, Cambridge University Press, Cambridge
- Stromberg, Joseph (February 2013). "Classical gas". Smithsonian. 43 (10): 18. Retrieved 27 August 2013.
- Watson, Andrew M. (1974). "The Arab Agricultural Revolution and Its Diffusion, 700-1100". The Journal of Economic History. 34 (1): 8–35. doi:10.1017/s0022050700079602.
- Watson, Andrew M. (1983). Agricultural Innovation in the Early Islamic World. Cambridge University Press. ISBN 0-521-24711-X.
- National Geographic (2015). Food Journeys of a Lifetime. National Geographic Society. pp. 126–. ISBN 978-1-4262-1609-1.
- Jourdan, Pablo. "Medieval Horticulture/Agriculture". Ohio State University. Archived from the original on 14 April 2013. Retrieved 24 April 2013.
- Janick, Jules (2008). "Islamic Influences on Western Agriculture" (PDF). Purdue University. Retrieved 2013-05-23.
- White, Lynn (1967). Hoyt, Robert S., ed. The Life of the Silent Majority. Life and Thought in the Early Middle Ages. University of Minnesota Press. p. 88.
- Andersen, Thomas Barnebeck; Jensen, Peter Sandholt; Skovsgaard, Christian Volmar (December 2014). "The Heavy Plough and the Agricultural Revolution in Medieval Europe" (PDF). European Historical Economics Society.
- Fox, H. S. A. (November 1986). "The Alleged Transformation from Two-Field to Three-Field Systems in Medieval England". The Economic History Review. 39 (4): 526–548. doi:10.1111/j.1468-0289.1986.tb01255.x. JSTOR 2596482.
- White, Lynn Townsend (1978). Medieval Religion and Technology: Collected Essays. University of California Press. p. 143. ISBN 978-0-520-03566-9.
- Newman, Paul B. (2001). Daily Life in the Middle Ages. McFarland. pp. 88–89. ISBN 0786450525.
- Campbell, Bruce M. S.; M. Overton (1993). "A New Perspective on Medieval and Early Modern Agriculture: Six Centuries of Norfolk Farming, c.1250-c.1850". Past and Present. 141: 38–105. doi:10.1093/past/141.1.38.
- Campbell, Bruce M.S. (2000). English Seigniorial Agriculture, 1250–1450. Cambridge University Press. ISBN 0-521-30412-1.
- Stone, David (2005). Decision-Making in Medieval Agriculture. Oxford University Press. ISBN 0-19-924776-5.
- John Langdon (2010). Robert E. Bjork, ed. The Oxford Dictionary of the Middle Ages. Oxford University Press. pp. 20–23. ISBN 978-0-19-866262-4.
- Jordan, William Chester (1997). The Great Famine: Northern Europe in the Early Fourteenth Century. Princeton U.P.
- Crosby, Alfred. "The Columbian Exchange". The Gilder Lehrman Institute of American History. Retrieved 2013-05-11.
- Wagner, Holly. "Super-Sized Cassava Plants May Help Fight Hunger In Africa". The Ohio State University. Archived from the original on 2013-12-08. Retrieved 2013-05-11.
- Florence Wambugu; John Wafula, eds. (2000). "Advances in Maize Streak Virus Disease Research in Eastern and Southern Africa". International Service for the Acquisition of Agri-Biotech Applications. Retrieved 2013-04-16.
- Chapman, Jeff. "The Impact of the Potato". History Magazine (2).
- Mann, Charles C. (November 2011). "How the Potato Changed History". Smithsonian.
- Snell, K.D.M. (1985). Annals of the Labouring Poor, Social Change and Agrarian England 1660–1900. Cambridge University Press. ISBN 0-521-24548-6. Chapter 4
- Thirsk, Joan. "'Blith, Walter (bap. 1605, d. 1654)'". Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, Jan 2008. Retrieved 2 September 2011.
- Jaap Harskamp, "The Low Countries and the English Agricultural Revolution." (2009): 32-41. in JSTOR
- Payne, F. G. "The British Plough: Some Stages in its Development" (PDF). British Agricultural History Society. Retrieved 5 April 2017.
- Barlow, Robert Stockes; "300 Years of Farm Implements and Machinery 1630–1930"; Krause Publications (2003); p.33; ISBN 978-0873496322
- Hodge, James (1973). Richard Trevithick. Shire Publications. p. 30. ISBN 0-85263-177-4.
- Macmillan, Don; Broehl, Wayne G. The John Deere Tractor Legacy. Voyageur Press. p. 45.
- "The Coprolite Industry". Cambridgeshire History. Retrieved 5 April 2017.
- Janick, Jules. "Agricultural Scientific Revolution: Mechanical" (PDF). Purdue University. Retrieved 24 May 2013.
- Reid, John F. (2011). "The Impact of Mechanization on Agriculture". The Bridge on Agriculture and Information Technology. 41 (3).
- Suszkiw, Jan (November 1999). "Tifton, Georgia: A Peanut Pest Showdown". Agricultural Research magazine. Retrieved 23 November 2008.
- "A Historical Perspective". International Fertilizer Industry Association. Archived from the original on 9 March 2012. Retrieved 7 May 2013.
- Iordachi, Constantin; Bauerkamper, Arnd (2014). The Collectivization of Agriculture in Communist Eastern Europe: Comparison and Entanglements. Central European University Press. p. 9. ISBN 978-615-5225-63-5.
- Moss, Brian (2008). "Water Pollution by Agriculture" (PDF). Phil. Trans. R. Soc. Lond. B. 363: 659–666. doi:10.1098/rstb.2007.2176.
- "Title 05 – Agriculture and rural development". Archived from the original on 4 December 2013. Retrieved 16 June 2016.
- James, Clive (1996). "Global Review of the Field Testing and Commercialization of Transgenic Plants: 1986 to 1995" (PDF). The International Service for the Acquisition of Agri-biotech Applications. Retrieved 17 July 2010.
- Weasel, Lisa H. 2009. Food Fray. Amacom Publishing
- Douglas, James S., Hydroponics, 5th ed. Bombay: Oxford UP, 1975. 1–3
- "Towards Sustainable Production and Use of Resources: Assessing Biofuels" (PDF). United Nations Environment Programme. 16 October 2009. Archived from the original (PDF) on 22 November 2009. Retrieved 24 October 2009.
- Philpott, Tom (19 April 2013). "A Brief History of Our Deadly Addiction to Nitrogen Fertilizer". Mother Jones. Retrieved 7 May 2013.
- "Ten worst famines of the 20th century". Sydney Morning Herald. 15 August 2011.
- Khoury, C.K.; Achicanoy, H.A.; Bjorkman, A.D.; Navarro-Racines, C.; Guarino, L.; Flores-Palacios, X.; Engels, J.M.M.; Wiersema, J.H.; Dempewolf, H.; Sotelo, S.; Ramírez-Villegas, J.; Castañeda-Álvarez, N.P.; Fowler, C.; Jarvis, A.; Rieseberg, L.H.; Struik, P.C. (2016). "Origins of food crops connect countries worldwide". Proc. R. Soc. B. 283 (1832): 20160792. doi:10.1098/rspb.2016.0792.
- Hazell, Peter B.R. (2009). The Asian Green Revolution. IFPRI Discussion Paper. International Food Policy Research Institute. GGKEY:HS2UT4LADZD.
- Barrionuevo, Alexei; Bradsher, Keith (8 December 2005). "Sometimes a Bumper Crop Is Too Much of a Good Thing". The New York Times.
- Tilman, D.; Cassman, K. G.; Matson, P. A.; Naylor, R.; Polasky, S. (August 2002). "Agricultural sustainability and intensive production practices" (PDF). Nature. 418 (6898): 671–7. Bibcode:2002Natur.418..671T. doi:10.1038/nature01014. PMID 12167873.
- Paull, John (2011). "Attending the First Organic Agriculture Course: Rudolf Steiner's Agriculture Course at Koberwitz, 1924" (PDF). European Journal of Social Sciences. 21 (1): 64–70.
- Paull, John (2014). "Lord Northbourne, the man who invented organic farming, a biography" (PDF). Journal of Organic Systems. 9 (1): 31–53.
- Civitello, Linda. Cuisine and Culture: A History of Food and People (Wiley, 2011) excerpt
- Federico, Giovanni. Feeding the World: An Economic History of Agriculture 1800-2000 (Princeton UP, 2005) highly quantitative
- Grew, Raymond. Food in Global History (1999)
- Heiser, Charles B. Seed to Civilization: The Story of Food (W.H. Freeman, 1990)
- Herr, Richard, ed. Themes in Rural History of the Western World (Iowa State UP, 1993)
- Mazoyer, Marcel, and Laurence Roudart. A History of World Agriculture: From the Neolithic Age to the Current Crisis (Monthly Review Press, 2006) Marxist perspective
- Prentice, E. Parmalee. Hunger and history: the influence of hunger on human history (Harper, 1939)
- Tauger, Mark. Agriculture in World History (Routledge, 2008)
- Bakels, C. C. The Western European Loess Belt: Agrarian History, 5300 BC - AD 1000 (Springer, 2009)
- Barker, Graeme, and Candice Goucher, eds. The Cambridge World History: Volume 2, A World with Agriculture, 12,000 BCE–500 CE. (Cambridge UP, 2015)
- Bowman, Alan K. and Rogan, Eugene, eds. Agriculture in Egypt: From Pharaonic to Modern Times (Oxford UP, 1999)
- Cohen, M. N. The Food Crisis in Prehistory: Overpopulation and the Origins of Agriculture (Yale UP, 1977)
- Crummey, Donald and Stewart, C. C., eds. Modes of Production in Africa: The Precolonial Era (Sagem 1981)
- Diamond, Jared. Guns, Germs, and Steel (W.W. Norton, 1997)
- Duncan-Jones, Richard. Economy of the Roman Empire (Cambridge UP, 1982)
- Habib, Irfan. Agrarian System of Mughal India (Oxford UP, 3rd ed. 2013)
- Harris, D. R., ed. The Origins and Spread of Agriculture and Pastoralism in Eurasia, (Routledge, 1996)
- Isager, Signe and Jens Erik Skydsgaard. Ancient Greek Agriculture: An Introduction (Routledge, 1995)
- Lee, Mabel Ping-hua. The economic history of china: with special reference to agriculture (Columbia University, 1921)
- Murray, Jacqueline. The First European Agriculture (Edinburgh UP, 1970)
- Oka, H-I. Origin of cultivated rice (Elsevier, 2012)
- Price, T. D. and A. Gebauer, eds. Last Hunters – First Farmers: New Perspectives on the Prehistoric Transition to Agriculture (1995)
- Srivastava, Vinod Chandra, ed. History of Agriculture in India (5 vols 2014) from 2000 BC to present.
- Stevens, C. E. "Agriculture and Rural Life in the Later Roman Empire" in Cambridge Economic History of Europe, Vol. I, The Agrarian Life of the Middle Ages (1971)
- Teall, John L. (1959). "The grain supply of the Byzantine Empire, 330-1025". Dumbarton Oaks Papers. 13: 87–139. JSTOR 1291130.
- Yasuda, Y., ed. The Origins of Pottery and Agriculture (SAB, 2003)
- Collingham, E. M. The Taste of War: World War Two and the Battle for Food (Penguin, 2012)
- Kerridge, Erik. "The Agricultural Revolution Reconsidered." Agricultural History ( 1969) 43:4, 463-75. in JSTOR, in Britain, 1750–1850
- Ludden, David, ed. New Cambridge History of India: An Agrarian History of South Asia (Cambridge, 1999).
- McNeill, William H. (1999). "How the Potato Changed the World's History". Social Research. 66 (1): 67–83. JSTOR 40971302.
- Mintz, Sidney. Sweetness and Power: The Place of Sugar in Modern History (Penguin, 1986)
- Reader, John. Propitious Esculent: The Potato in World History (Heinemann, 2008) a standard scholarly history
- Salaman, Redcliffe N. The History and Social Influence of the Potato, (Cambridge, 2010)
- Ambrosoli, Mauro. The Wild and the Sown: Botany and Agriculture in Western Europe, 1350–1850 (Cambridge UP, 1997)
- Brassley, Paul, Yves Segers, and Leen Van Molle, eds. War, Agriculture, and Food: Rural Europe from the 1930s to the 1950s (Routledge, 2012)
- Brown, Jonathan. Agriculture in England: A Survey of Farming, 1870–1947 (Manchester UP, 1987)
- Clark, Gregory (2007). "The long march of history: Farm wages, population, and economic growth, England 1209–1869" (PDF). Economic History Review. 60 (1): 97–135. doi:10.1111/j.1468-0289.2006.00358.x.
- Dovring, Folke, ed. Land and labor in Europe in the twentieth century: a comparative survey of recent agrarian history (Springer, 1965)
- Gras, Norman. A history of agriculture in Europe and America (Crofts, 1925)
- Harvey, Nigel. The Industrial Archaeology of Farming in England and Wales (HarperCollins, 1980)
- Hoffman, Philip T. Growth in a Traditional Society: The French Countryside, 1450–1815 (Princeton UP, 1996)
- Hoyle, Richard W., ed. The Farmer in England, 1650–1980 (Routledge, 2013) online review
- Kussmaul, Ann. A General View of the Rural Economy of England, 1538–1840 (Cambridge UP, 1990)
- Langdon, John. Horses, Oxen and Technological Innovation: The Use of Draught Animals in English Farming from 1066 to 1500 (Cambridge UP, 1986)
- McNeill, William H (1948). "The Introduction of the Potato into Ireland". Journal of Modern History. 21: 218–21. doi:10.1086/237272. JSTOR 1876068.
- Moon, David. The Plough that Broke the Steppes: Agriculture and Environment on Russia's Grasslands, 1700–1914 (Oxford UP, 2014)
- Slicher van Bath, B. H. The agrarian history of Western Europe, AD 500–1850 (Edward Arnold, reprint, 1963)
- Thirsk, Joan, et al. The Agrarian History of England and Wales (Cambridge UP, 8 vols., 1978)
- Williamson, Tom. Transformation of Rural England: Farming and the Landscape 1700–1870 (Liverpool UP, 2002)
- Zweiniger-Bargielowska, Ina, Rachel Duffett, and Alain Drouard, eds. Food and war in twentieth century Europe (Ashgate, 2011)
- Cochrane, Willard W. The Development of American Agriculture: A Historical Analysis (University of Minnesota P, 1993)
- Fite, Gilbert C. (1983). "American Farmers: The New Minority". Annals of Iowa. 46 (7): 553–555.
- Gras, Norman. A history of agriculture in Europe and America, (F.S. Crofts, 1925)
- Gray, L. C. History of agriculture in the southern United States to 1860 (P. Smith, 1933) Volume I online; Volume 2
- Hart, John Fraser. The Changing Scale of American Agriculture. (University of Virginia Press, 2004)
- Hurt, R. Douglas. American Agriculture: A Brief History (Purdue UP, 2002)
- Mundlak, Yair (2005). "Economic Growth: Lessons from Two Centuries of American Agriculture". Journal of Economic Literature. 43 (4): 989–1024. doi:10.1257/002205105775362005.
- O'Sullivan, Robin. American Organic: A Cultural History of Farming, Gardening, Shopping, and Eating (University Press of Kansas, 2015)
- Rasmussen, Wayne D., ed. Readings in the history of American agriculture (University of Illinois Press, 1960)
- Robert, Joseph C. The story of tobacco in America (University of North Carolina Press, 1949)
- Russell, Howard. A Long Deep Furrow: Three Centuries of Farming In New England (UP of New England, 1981)
- Russell, Peter A. How Agriculture Made Canada: Farming in the Nineteenth Century (McGill-Queen's UP, 2012)
- Schafer, Joseph. The social history of American agriculture (Da Capo, 1970 )
- Schlebecker John T. Whereby we thrive: A history of American farming, 1607-1972 (Iowa State UP, 1972)
- Weeden, William Babcock. Economic and Social History of New England, 1620-1789 (Houghton, Mifflin, 1891)
- "The Core Historical Literature of Agriculture" from Cornell University Library; includes 2100 fulltext books and runs of 36 scholarly journals; coverage of agricultural economics, agricultural engineering, animal science, crops and their protection, food science, forestry, human nutrition, rural sociology, and soil science.