Question

Define the terms
(a). Harvesting
(b). Threshing
(c). Winnowing

Answer 1

Hint: Harvesting is called a gathering a ripe crop from the fields. Threshing is the loosening of the crop from the husks and straw. Wind winnowing is an agricultural method that is developed by ancient cultures used for separating grain from the chaff.

Complete answer:
(a). Harvesting: Reaping is the cutting of grain and pulse to harvest, typically using a scythe or reaper. On smaller farms with mechanization, harvesting is the most labor-intensive activity of the season. On large farms, harvesting utilizes expensive and sophisticated farm machinery, for example, the combine harvester. Process automation has increased the efficiency of the seeding and harvesting process. The term "harvesting" may include immediate handling, including cleaning, sorting, and cooling.
(b). Threshing:- It is the step in grain preparation after reaping is done. Threshing does not remove bran from the grain. Threshing is done by beating the grain using a flail on the threshing floor. Another method of threshing is to make donkeys walk in circles on the grain on a hard surface. A modern version of this is to spread the grain on the surface of a country road so that the grain is threshed by the wheels of vehicles.
(c). Winnowing:- It can be used to remove pests from grain. Winnowing follows threshing in grain preparation. It involves throwing the mixture into the air so the wind blows away the lighter chaff, on the other hand, the heavier grains fall back down for recovery. Techniques included using a winnowing fan and using a tool a pile of harvested grain.

Note: Threshing is done by beating the sheaves against the wooden bars which separate the grains from the stalks. Winnowing is the process of removing the husk from the grains. It is done when grains are poured from a height on a windy day.