Question

what is winnowing???????????​

Answer 1

Answer:

The process of separating heavier and lighter components of a mixture by wind or by blowing air is called winnowing. This method is used by farmers to separate lighter husk particles from heavier seeds of grain.

Answer 2

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The grains collected after threshing have some chaff which needs to be separated. This is achieved by winnowing. It is the process where grains are dropped from a height. The heavier grains fall directly to the ground, Wilde the lighter chaff blows away and collects at a distance.

After a harvest, crop stubs are often left behind in the field. These are usually burnt by the farmers. But a better option is to let the stubs remain in the fields after harvest. The stubs can help minimise erosion, return nutrients to the soil, increase the amount of organic matter, raise the water holding capacity of the soil, and also crub the growth of weeds.