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The production of corn (Zea mays mays, also known as "maize") plays a major role in the economy of the United States. The US is the largest corn producer in the world, with 96,000,000 acres (39,000,000 ha) of land reserved for corn production. Corn growth is dominated by west/north central Iowa and east central Illinois. Approximately 13% of ...
Illinois Saint Andrew Society Tartan 5 ILCS 460/95 2012 [1] Theatre The Great American People Show: 5 ILCS 460/70 1995 [1] Tree: White oak (Quercus alba) (replaced "Native Oak" adopted in 1908) 5 ILCS 460/40 1973 [2] [3] Vegetable: Sweet corn: 5 ILCS 460/56 2015 [1] Wildflower: Milkweed (Asclepias spp.) 5 ILCS 460/43 2017 [1] Mushroom Giant ...
The units by which the yield of a crop is usually measured today are kilograms per hectare or bushels per acre. Long-term cereal yields in the United Kingdom were some 500 kg/ha in Medieval times, jumping to 2000 kg/ha in the Industrial Revolution, and jumping again to 8000 kg/ha in the Green Revolution. [1]
For example, average yields of corn (maize) in the US have increased from around 2.5 tons per hectare (t/ha) (40 bushels per acre) in 1900 to about 9.4 t/ha (150 bushels per acre) in 2001. Similarly, worldwide average wheat yields have increased from less than 1 t/ha in 1900 to more than 2.5 t/ha in 1990.
The quantities of corn (maize, Zea mays) in the following table are in million metric tonnes (m STs, m LTs). All countries with a typical production quantity of at least 10 million t (11 million short tons; 9.8 million long tons) are listed below.
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Maize is a tall annual grass with a single stem, ranging in height from 1.2 m (4 ft) to 4 m (13 ft). [31] The long narrow leaves arise from the nodes or joints, alternately on opposite sides on the stalk. [31] Maize is monoecious, with separate male and female flowers on the same plant. [31]
Wheat yields in least developed countries since 1961. The steep rise in crop yields in the U.S. began in the 1940s. The percentage of growth was fastest in the early rapid growth stage. In developing countries maize yields are still rapidly rising. [6] Productivity is driven by changes in either agricultural technique or improvements in technology.