Question

how is threshing done manually

Answer 1

The common method for manual threshing is hand beating against an object, treading, or by holding the crop against a rotating drum with spikes or rasp bars.

Hand beating methods are normally used for threshing rice that easily shatters



may this helps you :-)

Answer 2

Using a table fan.. Like the unseparated material is kept in a flat container and then it is held in hand up in air then in the direction of wind the container is moved to and fro... Which results in falling of material and due to air from table fan the useless light material will fall away and the grains will fall directly on ground