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141.

Erosion losses of nitrogen is _____ kg N/year:

A.	10?40	B.	20?60
C.	40?80	D.	60?90

142.

Etridiazol and nitrapyrin ______ oxidation of ammodia to nitrates:

A.	Accelerates	B.	Maintains
C.	Inhibits	D.	No effect

143.

Examples of cumulose materials are:

A.	Gneiss	B.	Till plain
C.	Colluvial	D.	Peat and Muck

144.

Farm yard manure:

A.	Balanced food for plants	B.	Recommended for salinity reclamation
C.	Tends to make soil acidic	D.	Tends to make soil alkaline

145.

Father of Soil Microbiology is:

A.	S.N. Winogradsky	B.	Bejerinck
C.	A. Waksman	D.	Liebig

146.

Ferrows oxide can be obtained during chemical process weathering under the heads of:

A.	Solution	B.	Oxidation
C.	Hydration	D.	None of these

147.

First 15 cm layer of land, which is ploughed for cultivation of crop, is called:

A.	Furrow slice	B.	Rhyzosphere soil
C.	Soil	D.	Soil profile

148.

For managing acid soils following chemical amendment is quite essential:

A.	ZnSO4	B.	CuO
C.	CaO	D.	CaSO4. 2H2O

149.

For preparing a mixed fertilizer, 100 kg of (NH4)2 SO4 and 125 k of SSP were mixed. 25 kg of filler was added to this mixture. In terms of N-P-K the fertilizer grade of this mixture will be:

A.	5?5?0	B.	5?10?0
C.	8?8?0	D.	10?10?0

150.

For reclamation of alkali soil, gypsum is mixed in the soil at the depth of:

A.	100 cm	B.	30 cm
C.	60 cm	D.	10 cm