1.
A piece of potato tube will form a new plant if it has

2.
The disease ergot of rye produces sclerotia is caused by

3.
Boron deficiency in fodder crops can be seen when boron is

4.
The size of chlorophyll molecule is

5.
The fungi which transmit plant viruses belong to class

6.
Black heart is a physiological disorder of

7.
The nematodes are

8.
Fertilisers are added to increase a soils

9.
Fertiliser P reacts in soil to form compounds with

10.
Plant require Fe and Mg for