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Mostly nitrogen, but also significant quantities of phosphorus and potassium. It also must have the full complement of secondary nutrients, calcium, magnesium, and sulfur. It also needs a proper balance of the micro-nutrients boron, copper, iron, manganese, molybdenum, and zinc. It also requires carbon, hydrogen, and oxygen, but gets these from the air and water.

The most important part of all this is that all these elements must be in proper balance. The crop will only do as well as the most limiting nutrient. A farmer can apply a tremendous amount of nitrogen, but if there is not enough phosphorus available, the crop will still not yield well.

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12y ago
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14y ago

Field corn needs approximately 1 1/2 square feet per plant to achieve optimum yields. This can be in almost any direction. For example, US Midwest farmers typically plant corn in rows spaced 30 inches apart, and space the seeds about 6 or 7 inches apart.

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12y ago

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11y ago

Corn needs nitrogen, but no too much or it will kill the corn

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13y ago

The corn grows best in areas with boggy soil. Also the corn can be found in fine soil

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13y ago

Tractor, tillage equipment, seeder, sprayer, maybe irrigation equipment, and fertilizer spreader.

A harvester is helpful, too, though some farmers hire others to do it.

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13y ago

Neutral is best (pH or around 7).

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Q: How much space does corn need to grow?
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