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The Feekes scale is a system to identify the growth and development of cereal crops introduced by the Dutch agronomists Willem Feekes (1907-1979) in 1941. [1] [2] This scale is more widely used in the United States [3] than other similar and more descriptive [4] [5] scales such as the Zadoks scale or the BBCH scale.
The first documented Africans were brought to Maryland in 1642, as 13 slaves at St. Mary's City, the first English settlement in the Province. [1] Slave labor made possible the export-driven plantation economy. The English observer William Strickland wrote of agriculture in Virginia and Maryland in the 1790s:
BBCH-scales have been developed for a range of crop species where similar growth stages of each plant are given the same code. Phenological development stages of plants are used in a number of scientific disciplines ( crop physiology , phytopathology , entomology and plant breeding ) and in the agriculture industry ( risk assessment of ...
As a global food source, the most important edible seeds by weight are cereals, followed by legumes, nuts, [2] then spices. Cereals (grain crops) and legumes correspond with the botanical families Poaceae and Fabaceae, respectively, while nuts, pseudocereals, and other seeds form polyphylic groups based on their culinary roles.
Three crops: maize, wheat, and rice, account for approximately 50% of the world's consumption of calories and protein, [6] and about 95% of the world's food needs are provided by just 30 species of plants. [7] Despite this, the list of crop species compiled as edible extends to around 12,650. [8]
Cropmarks or crop marks are a means through which sub-surface archaeological, natural and recent features may be visible from the air or a vantage point on higher ground or a temporary platform. Such marks, along with parch marks, [ 1 ] soil marks and frost marks, can reveal buried man-made structures that are not visible from the ground.
New tests done by the Environmental Working Group have found 21 oat-based cereals and snack bars popular amongst children to have "troubling levels of glyphosate." The chemical, which is the ...
Cereal First Second Third Barley Russia Australia France: Buckwheat Russia China Ukraine: Canary seed Canada Thailand Argentina: Fonio Guinea Nigeria Mali: Corn United States China Brazil: Millet India Niger China: Oat Russia Canada Poland: Quinoa Peru Bolivia Ecuador: Rice India China Bangladesh: Rye Germany Poland Russia: Sorghum