CSS :: Soil Science

@ : Home > Agriculture > Soil Science

For students in search of

291.

Rhizohium culture is used to increase biological nitrogen fixation in:

A.	Pulse crops	B.	Cereals crops
C.	Oilseeds	D.	Cotton

292.

Rhizobium japonicum can fix the nitrogen in the roots of:

A.	Soyabean	B.	Cowpea
C.	Beans	D.	Lentil

293.

Rhizobium leguminoserum can fix the nitrogen in the roots of:

A.	Alfalfa, Sweet clover	B.	Clovers
C.	Pea, Sweetpea, lentil	D.	Beans

294.

Rhizobium phaseoli can fix the nitrogen in the roots of:

A.	Lentil	B.	Soyabean
C.	Pea	D.	Bean

295.

Rhizobium sp fix atmospheric nitrogen:

A.	As symbiouts on whet	B.	As symbiouts on cucumber
C.	As symbiouts on pulses	D.	In free soil

296.

Rhizobium trifolii can fix the nitrogen in the roots of:

A.	Sweet clover	B.	Clover
C.	Lupines	D.	Soyabean

297.

Rhizosphere refers to the small area:

A.	Around the root	B.	On the root
C.	Near the primary root	D.	All of the above

298.

Rhizospheres affect microbial population and nutrient availability by:

A.	Exerting physical pressure	B.	Secreting nutritive metabolites and organic solvents
C.	Increasing pore space	D.	Changing soil structure

299.

Rock phosphate can be directly applied as fertilizer in soils:

A.	Acidic	B.	Alkaline
C.	Neutral	D.	All of these

300.

Rock phosphate contains:

A.	20 to 22% P2O5	B.	16 to 18% P2O5
C.	12 to 16% P2O5	D.	10 to 40% P2O5