11.
An alkali soil must have pH value of

12.
The cation exchange capacity is highest of

13.
The extent of Zn-deficient soils is approximately

14.
pH of Calcareous Soil is generally

15.
If fertiliser prices go up the optimum close should

16.
Olsen's method, which is used for phosphorus detection method used in soil is

17.
Chemical (Grigg & Tamn reagent) used for extraction of Mo is

18.
In Minimum thermometer, material used is

19.
Gypsum block can measure water potential up to

20.
The mineral chlorite has an extra layer of

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