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491.

The presence of ectotrophic mycorrhiza enhances the uptake of nutrients in general, but particularly of:

A.	Molybdenum	B.	Calcium
C.	Magnesium	D.	Phosphorus

492.

The protein content in linseed cake has been estimated at _____ percent.

A.	12	B.	24
C.	36	D.	48

493.

The protein content of soyabean is about:

A.	40	B.	20
C.	30	D.	10

494.

The protein percentage in lentil has been estimated at:

A.	25	B.	20
C.	30	D.	35

495.

The quantity of nutrients that can come in direct contact with the plant roots is the amount in a volume of soil _____ the volume of roots:

A.	Equal to	B.	Less than
C.	More than	D.	No relation with

496.

The Quantity of solid phase phosphorus that acts are reserve is often referred to as:

A.	Intensity factor	B.	Quantity factor
C.	Quality factor	D.	None of these

497.

The Quantity of urea needed for supplying 69 kg nitrogen to sorghum crop will be:

A.	100 kg	B.	125 kg
C.	150 kg	D.	175 kg

498.

The rapid increases in denitrification at the elevated soil temperatures suggest that _____ microorganisms play a major role in denitrification:

A.	Chemophilic	B.	Photophilic
C.	Thermophilic	D.	Hydrophilic

499.

The rate of application of atrazine in maize under heavy soils varies from _____ kg a.i/ha.

A.	0.76-1.00	B.	1.25-1.50
C.	1.75-2.00	D.	1.00-1.25

500.

The ratio of cotton seed to lint is:

A.	1;2	B.	1;3
C.	2;1	D.	4;1