A student lists the following agricultural practices for crop production :
Irrigation ; Removal of weeds ; Preparation of soil ; Storage of food grains ; Sowing ; Adding manure and fertilisers
Which agricultural practice is missing from the above list ?
Harvesting and Threshing: When crops pet matured, they usually turn yellow or golden or brown. This is the time when crops should be cut. Cutting of crops is known as harvesting. Harvesting is either done manually by a sickle or by a machine called Harvester. The harvested crop is further dried and then animals such as bullocks, buffaloes, camels are made to walk over it. The grains are separated from chaff with the help of wind (winnowing) (Fig. 1.6). The whole process of separation of the grains from the harvested crop is known as threshing.
Big farmers use huge machines known as combines which do both harvesting and threshing.