Organic materials which are added to soil of crop field to improve its physical conditions are called …………. .

The soil in a field in highly acidic. List any two materials which can be added to this soil to reduce its acidity. Give the reason for your choice.

Name two materials which can be added to a highly acidic soil to reduce its acidity . Give reasons for your answer.

The soil in a field is highly acidic. Name two materials which can be added to this soil to reduce its acidity. Give the reason for your choice.

The science of improving crop viarieties is called

Fertility of the soil in ricce fields can be improved by

In rice fields the soil fertility can be improved by addition of

The organic matter contained in the soil is called:

What will you do if the soil of your fields of crops are in acidic nature ?

Buildup of organic material in soil does not occur under which of the following conditions?