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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:
The Three Sisters planting method is featured on the reverse of the 2009 US Sacagawea dollar. [1]Agricultural history in the Americas differed from the Old World in that the Americas lacked large-seeded, easily domesticated grains (such as wheat and barley) and large domesticated animals that could be used for agricultural labor.
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 ...
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.
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
Harvesting a cereal with a combine harvester accompanied by a tractor and trailer. Cereal grains: (top) pearl millet, rice, barley (middle) sorghum, maize, oats (bottom) millet, wheat, rye, triticale. A cereal is a grass cultivated for its edible grain. Cereals are the world's largest crops, and are therefore staple foods.
Industrial crops: cotton, sugarcane, tobacco, groundnut, castor, gingelly, tapioca, etc. Food adjuncts: food and industrial use, no distinct demarcation; spices, condiments, beverages, and narcotics. It is also possible that one crop which has been included as a food crop may be figured as an industrial crop; for example maize or tapioca.