Exanthema is due to deficiency of

Fall of immature leaf is due to deficiency of

Fertility of soil in rice fields can be improved by

Function of zinc is

Nitrifying bacteria

Gray spots of oat are caused by deficiency of

Which of the following is a rootless aquatic plant in which a portion of the leaf forms a tiny sac for trapping insects?

Mineral salts which are absorbed by the roots from soil are in the form of

Hydroponics are

Hydroponics are