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Which of the following is an essential constituent of plant cell-wall?

Mineral which is highly mobile in soils but highly immobile in plants is________?

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Where is Indian institute of vegetable research situated?

Chemical formula of single superphosphate is:

Rice contains __% protein. Rice protein is known as ___

First irrigation commission was appointed in

The formulation of 2, 4-D which is absorbed faster by plants is

Which of the following is not naturally distributed in India? 

____ was marked as the International Year of soils.