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About 1,000 soil subgroups are defined in the United States. [6] A soil family category is a group of soils within a subgroup and describes the physical and chemical properties which affect the response of soil to agricultural management and engineering applications. The principal characteristics used to differentiate soil families include ...
The sowing depth should be 1.5 to 2 centimetres (0.59 to 0.79 in) in optimal soil or 3 to 4 centimetres (1.2 to 1.6 in) in dry soil. Rolling of the ground after sowing is helpful for further cultivation. [24] Cultivation in no-till farming systems is also possible and often practiced in the United States. Sowing then can be done two weeks later ...
Sufficient soil depth for adequate root growth and water retention; Good internal drainage, allowing sufficient aeration for optimal root growth (although some plants, such as rice, tolerate waterlogging); Topsoil or horizon O is with sufficient soil organic matter for healthy soil structure and soil moisture retention;
Grain drills are most often drawn by tractors, but can also be pulled by horses. Pickup trucks are sometimes used, since little draft is required. A seed rate of about 100 kg of seed per hectare (2 bushels per acre) is typical, though rates vary considerably depending on crop species, soil conditions, and farmer's preference.
The farms produce greenhouse and nursery crops, as well as hay (20,000 tons), dairy produce, potatoes (140,000 cwt), and livestock including cattle (11,000 inc. calves in 2016), reindeer, bison, and yak. [2] Cereals in the state include barley (146,000 bushels) and oats (47,000 bushels). Other livestock include chickens, hogs, and sheep.
Soil temperature regulates seed germination, [70] breaking of seed dormancy, [71] [72] plant and root growth [73] and the availability of nutrients. [74] Soil temperature has important seasonal, monthly and daily variations, fluctuations in soil temperature being much lower with increasing soil depth. [75]
The more grain or fodder a farmer can produce, the more draft animals such as horses and oxen could be supported and harnessed for labour and production of manure. Increased crop yields also means fewer hands are needed on farm, freeing them for industry and commerce. This, in turn, led to the formation and growth of cities, which then ...
Sorghum bicolor, commonly called sorghum [2] (/ ˈ s ɔːr ɡ ə m /) and also known as great millet, [3] broomcorn, [4] guinea corn, [5] durra, [6] imphee, [7] jowar, [8] or milo, [9] is a species in the grass genus Sorghum cultivated for its grain. The grain is used as food by humans, while the plant is used for animal feed and ethanol ...
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