Science, asked by devyadav5218, 11 months ago

Give three difference between land rotation and shifting cultivation

Answers

Answered by itsgod
8

Explanation:

Crop rotation is the practice of growing a series of dissimilar/different types of crops in the same area in sequential seasons.

Crop rotation gives various benefits to the soil. A traditional element of crop rotation is the replenishment of nitrogen through the use of green manure in sequence with cereals and other crops. Crop rotation also mitigates the build-up of pathogens and pests that often occurs when one species is continuously cropped, and can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants. Crop rotation is one component of polyculture.

Shifting cultivation is an agricultural system in which plots of land are cultivated temporarily, then abandoned and allowed to revert to their natural vegetation while the cultivator moves on to another plot. The period of cultivation is usually terminated when the soil shows signs of exhaustion or, more commonly, when the field is overrun by weeds. The length of time that a field is cultivated is usually shorter than the period over which the land is allowed to regenerate by lying fallow.

Of these cultivators, many use a practice of slash-and-burn as one element of their farming cycle. Others employ land clearing without any burning, and some cultivators are purely migratory and do not use any cyclical method on a given plot. Sometimes no slashing at all is needed where regrowth is purely of grasses, an outcome not uncommon when soils are near exhaustion and need to lie fallow.

One land-clearing system of shifting agriculture is the slash-and-burn method, which leaves only stumps and large trees in the field after the standing vegetation has been cut down and burned, its ashes enriching the soil. Cultivation of the earth after clearing is usually accomplished by hoe or digging stick and not by plough.

Answered by pankajpal6971
1

Answer:

The soil gains a variety of advantages through land rotation. Polyculture has a component called land rotation. A farming method known as shifting cultivation sees land plots temporarily cultivated before being abandoned and left to return to their natural vegetation as the cultivator shifts to another plot.

Explanation:

  • A farmer will cultivate a piece of land for a while and then abandon it to clear a new piece of land when the old land loses its fertility. This method of farming is known as land rotation. The farmer relocates to the new acreage but leaves his village in place.
  • In the humid tropics of Sub-Saharan Africa, Southeast Asia, and South America, shifting cultivation is a method of agriculture that has been used for a long time. On the "slash and burn" method, farmers would clear the land of all native flora, burn it, and then plant crops for two or three seasons straight in the exposed, treated soil.

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