Maximum milk yielding breed of buffalo is

‘Organic farming’ does not include.

The common biofertilisers used in organic farming are

The principal cereal crop of India is

Fill in the blanks by choosing correct option from the following

I. Puccinia causes ………. disease in wheat.

II. Blast is a …………. disease of paddy.

III. Chemical used to kill weeds are called ……… .

IV. Pesticides are ………… chemicals.

Choose the correct option.