A. Marl, gypsum
B. Slate, Shist
C. Dolomite shale, gneiss
D. None of the above
Soil Science
The maximum amount of water which a soil can hold after free drainage has ceased is called as…….?
A. Water potencial
B. Water use efficiency
C. Water harvesting
D. Water holding capacity
In cation exchange, 18 mg of Ammonium ion can be exchanged for……….?
A. 40 mg of Ca
B. 46 mg of Na
C. 6 mg of Al
D. 12 mg of mg
One ha cm of water is equal to……….?
A. 100 tonnes of water
B. 100000 litres of water
C. Both A & B
D. 10 tonnes of water
Walkley and blacks method of organic matter determination allows recovery of …… ℅ organic carbon content:
A. 44 ℅
B. 45 ℅
C. 33℅
D. None of the above
Most out standing green manure crop is……….?
A. Sun hemp
B. Dhaincha
C. Both of the above
D. None of the above
Journal ‘Plant and Soil’ is published from……….?
A. USA
B. Japan
C. The Neterlands
D. Pakistan
Select the water soluble phosphatic fertilizer from the following……….?
A. DSP
B. TSP
C. SSP
D. All of these
1 bar is equal to………?
A. 0.9869 atm
B. Wt. Of a 1020 cm water column
C. 75.01 cm high mercury column
D. All of these
Soil order characterized by excess of weathering with dominant iron and aluminium oxide clays, common in tropics is………?
A. Alfisols
B. Mollisols
C. Entisols
D. Oxisols