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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 ...
An edible seed [n 1] is a seed that is suitable for human or animal consumption. Of the six major plant parts, [ n 2 ] seeds are the dominant source of human calories and protein . [ 1 ] A wide variety of plant species provide edible seeds; most are angiosperms , while a few are gymnosperms .
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.
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.
The Environmental Working Group has found 21 oat-based cereals marketed to children to have ... has a much higher tolerance for glysphosate in crops, allowing levels ranging from 0.1 to 310 parts ...
Cereals are the world's largest crops by tonnage of grain produced. [82] Three cereals, maize, wheat, and rice, together accounted for 89% of all cereal production worldwide in 2012, and 43% of the global supply of food energy in 2009, [90] while the production of oats and rye has drastically fallen from their 1960s levels. [91]