11.
Susceptibility to wind & water erosion is highest for

12.
Humic acid isolated from soil is

13.
The biological method for determining deficiency of lime, P and K is

14.
The particle size (in diameter) of coarse sand is

15.
The ESP of sodic alkaline soil is

16.
Which is a incorrect match in the following

17.
Pure soda feldspar is

18.
Exchange acidity is determined by which method?

19.
Liquid Ratio is used for which kind of soils?

20.
The suitable fertiliser for foliar spray is

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