Watermelon grows well in:

Sand soil is best for the cultivation of:

A type of soil:

Clay is good for the cultivation of:

Alluvial soil is best for cultivation of:

Which organism is called foes of farmer?

Red soil is best for the cultivation of:

Cotton grows well in:

The colour of red soil is due to the presence of:

The process of breaking up of rock to smaller rock and soil is called: