Why is crop rotation practised by the farmer?

Answer 1

because it renews the nutrients in the soil. Too much planting of the same crop in the same spot drains out all of the nutrients necessary to grow that plant in the soil.

Answer 2

Crop rotation is a practice used to maintain nutrients in agricultural soil. When crops are planted in a field, the nutrients are drained from the soil into the plants. If all of the nutrients are removed from soil, it cannot hold water properly and becomes desolate- drying up and turning to dust. (For examples of this, look up what happened in the west during the great depression. Many people didn't rotate crops, and there were massive dust-storms because the loose soil blew in the wind.)

In rotating crops, farmers will often put livestock onto a field every few years. The animals eat proper food, and the animal waste (which is filled with nutrients) is mixed back into the soil to be absorbed by the next crop. Alternatively, they will plant a type of crop that uses different nutrients than the previous crop to balance out nutrient use and production.

By maintaining a lot of nutrients in soil, the farmers ensure that it can produce good, healthy crops for a long time.

Answer 3

some farmers practise crop rotation so as to maintain the health of their crops and to prevent the spread of diseases in the crops by both insects and deficiency diseases. The practice of planting a succession of crops in a field over a period of years. Rotations can maintain field fertility since different crops use different soil nutrients, so excessive demands are not made of one nutrient. In certain rotations, plants like legumes (peas and beans) are grown to restore fertility. Another example is with corn and soybeans. Corn uses up nutirnets from the soil which beans replace when they are planted the next year.

Answer 4

Crop rotation is a practice used to maintain nutrients in agricultural soil. When crops are planted in a field, the nutrients are drained from the soil into the plants. If all of the nutrients are removed from soil, it cannot hold water properly and becomes desolate- drying up and turning to dust. (For examples of this, look up what happened in the west during the great depression. Many people didn't rotate crops, and there were massive dust-storms because the loose soil blew in the wind.)

In rotating crops, farmers will often put livestock onto a field every few years. The animals eat proper food, and the animal waste (which is filled with nutrients) is mixed back into the soil to be absorbed by the next crop. Alternatively, they will plant a type of crop that uses different nutrients than the previous crop to balance out nutrient use and production.

By maintaining a lot of nutrients in soil, the farmers ensure that it can produce good, healthy crops for a long time.

Answer 5

the nutrients of the soil were renewed
It's a system used to add organic matter and to increase soil fertility in their fields. It also gives the fields a rest from going the same variety (i.e., cereal crops vs. oilseed crops) of crop year after year.

Answer 6

Because by planting and harvesting a crop every year, you take up the nutrients in the soil, like phosphates and nitrates, and don't give anything back (as you presumeably eat the produce, rather than put it back on the field).

Nowadays, these nutrients can be replaced with artificial fertilisers produced in the Haber-Bosch process, but before this was discovered, and even today in some Organic farms, crop-rotation was used to replenish the soil.

This was/is done by planting a leguminous crop (one that fixes nitrogen to put nitrates back in the soil), such as peas and beans, or by leaving the field fallow so that grass and clover (clover being another legume) can grow. Livestock could then be put onto the land to eat the grass, and produce faeces, which adds to the minral and nutrient content of the soil, as well qas improving structure.

Nowadays most organic farmers cut out the middle man by simply spreading manure collevted from cattle shed or other fields, but crop rotation is useful as it means crops can still be produced (like peas and beans) that you can sell, even though the soil may have lost some fertility. In Less Economically Developed Countries (LEDC's), aka, Third World Countries, crop rotation, when used, can provide a varied diet, essential in the poorer countries where a supermarket isn't just a quick drive away.

Crop rotation usually takes place on a one-five year cycle, at the end of which, the main crop can be produced again (such as wheat, corn, etc), but this time on better quality, more fertile soil.

Answer 7

Growing the same crop every year - would deplete the same minerals from the soil each year. Successive crop yields would be less. Crop rotation uses up a wider spread of minerals - meaning the soil will support crop growth for longer.

Answer 8

So that the soil isn't drained of nutrients, and so pests and pathogens don't build up in the area. It keeps both the soil and the crops healthy.

Answer 9

Yf gift v