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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