CSS :: Soil Science

@ : Home > Agriculture > Soil Science

For students in search of

381.

The concept of soil as a natural body was first developed by:

A.	C.F. Marbut	B.	K.D. Gilinka
C.	V.V.Dakuchaev	D.	E.W.Hilligard

382.

The conditions responsible for the formation of salt affected soil is:

A.	High rainfall	B.	Low rainfall and high evaporation
C.	Irrigation with good qality water	D.	All of the above

383.

Which of the following statements is more correct as regards to "luxury consumption" of K found in minute?

A.	Maize has mechanism to increase yields by taking excess K above the optimum requirement	B.	Maize takes excess K above the optimum requirement even though growth and yield are not promoted
C.	Maize takes excess K above the optimum requirement the concentration which becomes toxic to plants	D.	None of the above

384.

The conversion of amount into nitrate by microorganisms is known as:

A.	Nitrogen fixation	B.	Nitrification
C.	Denitrification	D.	Loss of nitrogen

385.

The crop suitable for cultivation in saline sodic soil would include:

A.	Soyabean and rice	B.	Soyabean and sugarbeet
C.	Sugarbeet and rice	D.	Trice and maixe

386.

The C-spacing of halloysite is:

A.	10.2 A	B.	7.39 A
C.	14.0 A	D.	None of these

387.

The cuticular membrances are generally more permeable to:

A.	Anions rather than cations	B.	Cations rather than anions
C.	Cations and anions both	D.	None of the above

388.

The dark coloured soils are:

A.	High in Fe and Mn	B.	Medium in Fe and Mn
C.	Low in Fe and Mn	D.	Not known

389.

The diagnostic surface horizons are called:

A.	Epipedon	B.	Pedon
C.	Polypedon	D.	All of them

390.

The diameter of most erodible soils particle is:

A.	0.2 mm	B.	0.1 mm
C.	0.3 mm	D.	0.4 mm