SOIL SCIENCE
Q.1
Acid tolerant crop is.
Ans.
Rice.
Q.2
The soils which have pH < 4.0 are known as.
Ans.
Cat soils.
Q.3
The soils which have organic matter + Na are known as.
Ans.
Black alkali soils.
Q.4
Potato scab disease favours.
Ans.
Alkaline soils.
Q.5
According to USDA, Soils have been divided into
Ans.
10 orders (Entisol, Vertisol, Inceptisol, Acidisol, Mollisol, Spodosol, Alfisol, Ultisol, Oxisol and Histosol).
Q.6
No. of soil orders according to seventh approximation soil classification are
Ans.
11 orders.
Q.7
Major source of Mn
Ans.
Pyrolusite.
Q.8
Total Urea production plant in operation in India are
Ans.
29 Plants.
Q.9
Total No. of soil testing lab are
Ans.
1049 labs.
Q.10
Total No. of mobile testing labs are
Ans.
153 labs.
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