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The “Crop Rotation Practice Standard” for the National Organic Program under the U.S. Code of Federal Regulations, section §205.205, states that Farmers are required to implement a crop rotation that maintains or builds soil organic matter, works to control pests, manages and conserves nutrients, and protects against erosion.
The Norfolk four-course system is a method of agriculture that involves crop rotation. Unlike earlier methods such as the three-field system, the Norfolk system is marked by an absence of a fallow year. Instead, four different crops are grown in each year of a four-year cycle: wheat, turnips, barley, and clover or ryegrass. [1]
With more crops available to sell and agriculture dominating the economy at the time, the three-field system created a significant surplus and increased economic prosperity. [3] The three-field system needed more plowing of land and its introduction coincided with the adoption of the moldboard plow. These parallel developments complemented each ...
By affecting the soil in different ways, crops in a rotation help to stabilise changes in the properties. Another consideration is that many agricultural pests are species-specific and so having a given species present in a field only some of the time helps to prevent populations of pests from growing. [6]
Although debatable, many agricultural historians also believe that the introduction of convertible husbandry was brought about with the introduction of the turnip. They argue that "the lowly turnip made possible a change in crop rotation which did not require much capital, but which brought about a tremendous rise in agricultural productivity."
The British Agricultural Revolution, or Second Agricultural Revolution, was an unprecedented increase in agricultural production in Britain arising from increases in labor and land productivity between the mid-17th and late 19th centuries. Agricultural output grew faster than the population over the hundred-year period ending in 1770, and ...
A major turning point for agricultural technology is the Industrial Revolution, which introduced agricultural machinery to mechanise the labour of agriculture, greatly increasing farm worker productivity. Revolutionary inventions like the seed drill, mechanical reaper, and steam-powered tractors reshaped the farming landscape.
Agricultural revolution may refer to: First Agricultural Revolution (circa 10,000 BC), the prehistoric transition from hunting and gathering to settled agriculture (also known as the Neolithic Revolution) Arab Agricultural Revolution (8th–13th century), The spread of new crops and advanced techniques in the Muslim world