[VSQ]SOIL SCIENCE, SET 12

SOIL SCIENCE

Q.1

Most outstanding green manure crop.

Ans. 

Sun hemp.

Q.2

Fastest N fixing plant.

Ans. 

Sesbania rostrata.

Q.3

Equivalent basicity of Ca(NO3)2.

Ans. 

21.

Q.4

The crops which absorb the ammonical form directly.

Ans. 

Paddy & Potato.

Q.5

N% in sodium nitrate.

Ans. 

16% N.

Q.6

N% in ammonium sulphate.

Ans. 

20.6% N.

Q.7

Water soluble phosphatic fertilizer.

Ans. 

S.S.P., D.S.P., T.S.P., D.A.P.

Q.8

Citrate soluble P fertilizer,

Ans. 

1. Di calcium phosphate 

2. Basic slag

3. Rhemania Phosphate.

Q.9

Citrate & water Insoluble P fertilizer.

Ans. 

Rock phosphate, Raw bone meal, steamed bone meal.

Q.10

P2O5 % in single super phosphate.

Ans. 

16-20% P2O5. 

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