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Among the major field crops, oats, wheat, and rye are sown, grasses and legumes are seeded and maize and soybeans are planted. In planting, wider rows (generally 75 cm (30 in) or more) are used, and the intent is to have precise; even spacing between individual seeds in the row, various mechanisms have been devised to count out individual seeds at exact intervals.
The farm field should be worked and smoothed into a flat fine seed bed. The initial tillage is normally done with a disc harrow or a rotary tiller , rather than with a plow. If plowing is required, secondary passes with a disc or tiller will be needed.
A seedbed of rice plants. A seedbed or seedling bed is the local soil environment in which seeds are planted. Often, it comprises not only the soil but also a specially prepared cold frame, hotbed or raised bed used to grow the seedlings in a controlled environment into larger young plants before transplanting them into a garden or field.
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 ...
A smooth seedbed is prepared for planting with one pass. Harrowing with tractor and disk harrow in the 1940s) Chain harrowing can be used on pasture land to spread out dung, and to break up dead material ( thatch ) in the sward, and similarly in sports-ground maintenance a light chain harrowing is often used to level off the ground after heavy ...
Soon after 1900, the farm tractor was introduced, which made modern large-scale agriculture possible. However, the destruction of the prairie grasses and tillage of the fertile topsoil of the American Midwest caused the Dust Bowl , in which the soil was blown away and stirred up into dust storms that blackened the sky.
Filling a feed-box of a seed drill, Canterbury Agricultural College farm, 1948. A seed drill is a device used in agriculture that sows seeds for crops by positioning them in the soil and burying them to a specific depth while being dragged by a tractor. This ensures that seeds will be distributed evenly.
Among the crops harvested with a combine are wheat, rice, oats, rye, barley, corn (maize), sorghum, millet, soybeans, flax , sunflowers and rapeseed (canola). The separated straw (consisting of stems and any remaining leaves with limited nutrients left in it) is then either chopped onto the field and ploughed back in, or laid out in rows, ready ...