[VSQ]SOIL SCIENCE, SET 15

SOIL SCIENCE

Q.1

Organic carbon is determined by.

Ans. 

1. Walkey & Black method 

2. Morgan's method.

Q.2

Application of clay to sandy soils is known as.

Ans.

Marling.

Q.3

The form of N is preferable for saline soils.

Ans. 

Nitrate form.

Q.4

Amonical fertilizers should be applied in.

Ans. 

Reduced zone.

Q.5

Nitrate fertilizers should be applied in.

Ans. 

Oxidized zone.

Q.6

Criteria of essentiality was given by.

Ans. 

Arnon & Stout (1939).

Q.7

Functional nutrients are in number.

Ans. 

20.

Q.8

Source of N for plants for absorption.

Ans. 

NO3 (Mostly).

Q.9

Elements provide basic structure.

Ans. 

C,H,O.

Q.10

Energy Exchange elements. 

Ans. 

H₂O.

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