farmerjan
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I am not sure how to explain cover crops any better. If you google it, wikipedia gives a good over all definition. A cover crop is grown for 2 purposes.... to cover the ground so there is little or no erosion, and to enrich the soil while it prevents erosion, A cover crop, "covers" the bare ground. It is planted after a different crop is harvested. Hay is not technically considered a cover crop even though it is a crop that covers the ground. But you can call it that in some different situations.
There are several sites that you can go to, to learn more about cover crops. Understand that they are usually planted to cover the bare soil, they are to improve the soil because they are often used as a green manure crop that is plowed under or they are killed and left on top of the soil to provide a "mulch" for another emerging crop and they will break down to improve the soil in that way. They can be harvested also and the stems or stalks can be plowed under as a "fertilizer" in the way of adding organic matter to the soil. They are normally only on the ground for a short time, half a year. The purpose is to bridge the time between the crop you are growing, like corn or soybeans, from the time they are harvested, until the ground is replanted the following year to the desired "cash crop".
They are used to help put back into the soil some of what the "primary crop" takes out of the soil. They will add needed organic matter in some way which makes the soil more able to provide nutrition for the primary crop being grown. They are basically a "growing" form of fertilizer and soil improver.
There are several sites that you can go to, to learn more about cover crops. Understand that they are usually planted to cover the bare soil, they are to improve the soil because they are often used as a green manure crop that is plowed under or they are killed and left on top of the soil to provide a "mulch" for another emerging crop and they will break down to improve the soil in that way. They can be harvested also and the stems or stalks can be plowed under as a "fertilizer" in the way of adding organic matter to the soil. They are normally only on the ground for a short time, half a year. The purpose is to bridge the time between the crop you are growing, like corn or soybeans, from the time they are harvested, until the ground is replanted the following year to the desired "cash crop".
They are used to help put back into the soil some of what the "primary crop" takes out of the soil. They will add needed organic matter in some way which makes the soil more able to provide nutrition for the primary crop being grown. They are basically a "growing" form of fertilizer and soil improver.