Agriculture and Farming Atlas
Claims this atlas currently marks as unsettled or as tested and found false. A debated fact is one scholars hold competing positions on; a debunked one has been checked against the record and found not to hold. Both are kept in view rather than quietly smoothed over, with the reasoning that put each one where it stands.
33 statements.
4-H, Founding Year1902
4-H, Institutions
Standing
Concerns Founding Year
Currently States 1902
Usually dated to Albert Belmont Graham's 1902 Clark County, Ohio boys' and girls' agricultural club, though the modern 4-H name and clover emblem were formalized over the following decade.
Apiculture, DescriptionThe keeping of honey bee colonies, historically in hollow logs, skeps and clay hives before the modern movable-frame box, for honey, wax and pollination. Where deliberate husbandry of bees first replaced simple honey hunting is disputed between an early Anatolian trail and a later, better-documented Egyptian one.
This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Apiculture, Disciplines
Standing
Concerns Description
Currently States The keeping of honey bee colonies, historically in hollow logs, skeps and clay hives before the modern movable-frame box, for honey, wax and pollination. Where deliberate husbandry of bees first replaced simple honey hunting is disputed between an early Anatolian trail and a later, better-documented Egyptian one.
This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Sources disagree on where deliberate beekeeping began: Egyptian tomb art shows organized hives by roughly 2500 BCE, while beeswax residue in Anatolian pottery and cave art pushes human use of hive products back into the seventh to ninth millennium BCE. One reading holds these mark two independent origins rather than a single one.
Source Beekeeping (Wikipedia)
Cacao, Domestication RegionDisputed: upper Amazon (Ecuador) versus Central America
Cacao, Crops
Standing
Concerns Domestication Region
Currently States Disputed: upper Amazon (Ecuador) versus Central America
Genuinely disputed: one line of evidence places first domestication in the upper Amazon (Santa Ana-La Florida site, present-day Ecuador, Mayo-Chinchipe culture) with later introduction to Mesoamerica; a 2018 genomic study of cultivated trees instead concluded a single domestication event in Central America. See this wave's open question and dissent record for the full citation of both positions.
Source Cacao Tree (Wikipedia)
Cacao, Domesticated When (Circa)Disputed: at least 5,300 years ago, or about 3,600 years ago
Cacao, Crops
Standing
Concerns Domesticated When (Circa)
Currently States Disputed: at least 5,300 years ago, or about 3,600 years ago
Genuinely disputed: at least 5,300 years ago per the upper Amazon evidence, or about 3,600 years ago per the 2018 Central American single-domestication-event genomic study.
Source Cacao Tree (Wikipedia)
Cacao, Era (category)Bronze Age
Cacao, Crops
Standing
Concerns Era (category)
Currently States Bronze Age
Category derived from this entry's own free-text era/class property; the source property's own status (debated) carries whatever is unresolved about the underlying date or classification, this derived category fact makes no further claim beyond bucketing that same text.
Source Cacao Tree (Wikipedia)
Castor Oil Plant, Domestication Regionsoutheastern Mediterranean Basin, East Africa, and India
Castor Oil Plant, Crops
Standing
Concerns Domestication Region
Currently States southeastern Mediterranean Basin, East Africa, and India
Source gives indigenous range, not a confirmed single center of domestication
Source Ricinus
Cheese Press, OriginHazel Irwin received a patent for a cheese press in 1808, though priority among early American women patentees is disputed.
Cheese Press, Implements and Machines
Standing
Concerns Origin
Currently States Hazel Irwin received a patent for a cheese press in 1808, though priority among early American women patentees is disputed.
Sources disagree on who first received an American patent: Hazel Irwin for a cheese press in 1808, Hannah Slater in 1793, or Mary Kies in 1809.
Source Cheese Press (Wikipedia)
Cream Separator, DescriptionA machine that spins whole milk at high speed to divide it into cream and skim milk by centrifugal force, replacing the slow gravity settling of pans. Gustaf de Laval's 1878 patent, built with Oskar Lamm, made the process continuous rather than batch-fed and became the commercially dominant design, though earlier batch-process centrifugal separators already existed.
Cream Separator, Implements and Machines
Standing
Concerns Description
Currently States A machine that spins whole milk at high speed to divide it into cream and skim milk by centrifugal force, replacing the slow gravity settling of pans. Gustaf de Laval's 1878 patent, built with Oskar Lamm, made the process continuous rather than batch-fed and became the commercially dominant design, though earlier batch-process centrifugal separators already existed.
Gustaf de Laval's continuous centrifugal separator, patented in 1878 with Oskar Lamm, is popularly credited as the invention, but the German engineer Wilhelm Lefeldt had already built a spinning centrifugal separator earlier in the 1870s; de Laval's advantage was a continuous, non-stop feed rather than being the first working machine.
Source Gustaf de Laval, the Milk-Cream Separator (Tekniska Museet)
Date Palm, Domestication RegionEastern Arabia (Persian Gulf region) and Mehrgarh, western Pakistan
Date Palm, Crops
Standing
Concerns Domestication Region
Currently States Eastern Arabia (Persian Gulf region) and Mehrgarh, western Pakistan
Wikipedia's Distribution section also reports alternate hypotheses placing origin in the Fertile Crescent (Egypt and Mesopotamia) or derived from wild palms in western India; the exact center of domestication is unresolved.
Source Wikipedia: Date palm, Wikipedia
Date Palm, Domesticated When (Circa)circa 7000 BCE (Mehrgarh) to 5530-5320 BCE (eastern Arabia)
Date Palm, Crops
Standing
Concerns Domesticated When (Circa)
Currently States circa 7000 BCE (Mehrgarh) to 5530-5320 BCE (eastern Arabia)
Earliest cultivation dates vary by site in the source; Mehrgarh evidence is older than the eastern Arabian evidence, and the article also notes competing claims for a Fertile Crescent origin, so a single domestication date is unresolved.
Source Wikipedia: Date palm, Wikipedia
Desertification, DescriptionThe gradual degradation of fertile land into arid desert through some combination of natural climate variability and human land use such as overgrazing, deforestation and continuous unrotated tillage, with drylands covering some 40 percent of the world's land and home to more than two billion people. How much of any one region's desertification, the Sahel above all, is natural climate cycle versus human pressure is genuinely disputed rather than settled: since 1900 the Sahara has pushed roughly 250 kilometers further south across a 6,000-kilometer front, and the Sahel has lost around 650,000 square kilometers of productive land over the last fifty years, but satellite vegetation records since the 1980s also show partial regreening in wetter years, which does not sit easily beside a simple story of one-way human-driven collapse.
This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Desertification, Concepts
Standing
Concerns Description
Currently States The gradual degradation of fertile land into arid desert through some combination of natural climate variability and human land use such as overgrazing, deforestation and continuous unrotated tillage, with drylands covering some 40 percent of the world's land and home to more than two billion people. How much of any one region's desertification, the Sahel above all, is natural climate cycle versus human pressure is genuinely disputed rather than settled: since 1900 the Sahara has pushed roughly 250 kilometers further south across a 6,000-kilometer front, and the Sahel has lost around 650,000 square kilometers of productive land over the last fifty years, but satellite vegetation records since the 1980s also show partial regreening in wetter years, which does not sit easily beside a simple story of one-way human-driven collapse.
This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Climate-cycle and human-land-use explanations of Sahel desertification are both supported by parts of the record, and the relative weight of the two is not settled; see the paired open question on this entity for what would resolve it.
Source Desertification (Wikipedia)
Donkey, Domesticated When (Circa)circa 5000 to 3000 BC, debated
Donkey, Livestock
Standing
Concerns Domesticated When (Circa)
Currently States circa 5000 to 3000 BC, debated
Estimates from the archaeological and genetic record range from circa 5000 to 3000 BC; the exact center and date are still debated.
Source Donkey (Wikipedia)
Duck, Domesticated When (Circa)circa 2000 BC, debated
Duck, Livestock
Standing
Concerns Domesticated When (Circa)
Currently States circa 2000 BC, debated
Commonly dated to roughly the 2nd millennium BC in Southeast Asia; the exact date is not precisely fixed.
Source Duck (Wikipedia)
Eggplant, Domestication RegionTwo probable independent domestications, from wild Solanum incanum: one in South Asia, one in East Asia
Eggplant, Crops
Standing
Concerns Domestication Region
Currently States Two probable independent domestications, from wild Solanum incanum: one in South Asia, one in East Asia
Source hedges with the word probably and names two independent domestication centers rather than one settled region; recorded as debated rather than picking one silently.
Source Eggplant (Wikipedia)
George Washington Carver, Birth Year1864
George Washington Carver, Figures
Standing
Concerns Birth Year
Currently States 1864
Born into slavery; his exact birth date was not recorded. Circa 1864 per the sources.
Source George Washington Carver (Wikipedia)
Hay Baler, DescriptionThe machine that compresses cut and raked hay, straw or silage into compact bales for handling and storage. A knotter-equipped stationary baler grew out of reaper technology in the 1870s; the pickup baler followed in the 1930s and the round baler reached mass production only in 1947, though a working round-bale press had already been built and patented decades earlier.
Hay Baler, Implements and Machines
Standing
Concerns Description
Currently States The machine that compresses cut and raked hay, straw or silage into compact bales for handling and storage. A knotter-equipped stationary baler grew out of reaper technology in the 1870s; the pickup baler followed in the 1930s and the round baler reached mass production only in 1947, though a working round-bale press had already been built and patented decades earlier.
Popular credit for the first round baler goes to Allis-Chalmers' 1947 Roto-Baler, but the Nebraska Luebben family had already built and refined a rolling round-bale press from 1892, patented by Ummo Luebben in 1910; Allis-Chalmers licensed and refined the Luebben design rather than inventing the mechanism outright.
Source Who Invented the Round Hay Baler? (Farm Collector)
Homestead Act of 1862, DescriptionThe law, signed by Abraham Lincoln, that granted 160 acres of surveyed public land to a settler who resided on and improved it, accelerating the settlement of the American West. About forty percent of those who filed a claim carried it through to a title; how much of the land granted under it went to genuine settlers rather than fraud and speculation is still argued.
This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Homestead Act of 1862, Milestones
Standing
Concerns Description
Currently States The law, signed by Abraham Lincoln, that granted 160 acres of surveyed public land to a settler who resided on and improved it, accelerating the settlement of the American West. About forty percent of those who filed a claim carried it through to a title; how much of the land granted under it went to genuine settlers rather than fraud and speculation is still argued.
This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
About 40 percent of filers completed the process to final title; historians disagree on how much of the granted land reflects manipulation by land companies and speculators using dummy entrymen against ordinary settlers who simply failed. Earlier scholarship stressed widespread fraud, more recent work argues it was comparatively minor.
Source Homestead Acts (Wikipedia)
Horse Collar, Introduced Year480 CE
Horse Collar, Implements and Machines
Standing
Concerns Introduced Year
Currently States 480 CE
The earliest surviving depiction of the fully rigid, padded collar harness is a Dunhuang cave mural (cave 257) from Chinese Northern Wei art, dated 477 to 499 CE; the collar harness reached Europe by around 1000 CE and was common there by the 12th century. An earlier breast-strap trace harness, a precursor rather than the same device, is attested in China by the 4th century BCE, so whether the mural depicts a genuinely new invention or an older device finally captured in surviving art remains debated among historians of technology.
Source Horse Collar (Wikipedia)
Irish Potato Famine, DescriptionThe famine of 1845 to 1852, when the water mold Phytophthora infestans destroyed the potato crop Ireland's rural poor depended on; how much of the resulting mass death and emigration is attributable to the blight itself, as against the British government's response, remains debated.
This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Irish Potato Famine, Milestones
Standing
Concerns Description
Currently States The famine of 1845 to 1852, when the water mold Phytophthora infestans destroyed the potato crop Ireland's rural poor depended on; how much of the resulting mass death and emigration is attributable to the blight itself, as against the British government's response, remains debated.
This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Whether the death toll reflects the potato blight itself or was substantially worsened by British government policy (continued food exports, the limits of relief works and poor-law provision) is debated among historians; contemporaries such as John Mitchel held the government directly responsible.
Source Great Famine, Ireland (Wikipedia)
Kañiwa, Domesticated When (Circa)circa 3500 years before present
Kañiwa, Crops
Standing
Concerns Domesticated When (Circa)
Currently States circa 3500 years before present
The same Wikipedia section notes other sources date cultivation as far back as 7,000 years ago, and that archaeological seed-starch finds are dated 5,000 to 3,200 years before present; the article states the exact history of domestication remains speculative.
Source Wikipedia: Kaniwa, Wikipedia