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51.

If there is a little slope in the field, the soil erosion can be prevented by:

A.	Contour terracing	B.	Contour strip cropping
C.	Confour farming	D.	All of these

52.

The fertility level of any soil is generally determined by:

A.	Aeration and hydration	B.	Humus and mineral contents
C.	Humus, mineral and hydration level	D.	All of these

53.

The most common method used for cultivation on hills:

A.	Levelling	B.	Ridge terracing
C.	Bench terracing	D.	Channel terracing

54.

The disadvantage of ploughing in arid and semi-arid zones is:

A.	Loss of soil water	B.	Soil particles became smaller
C.	Soil organisms are exposed	D.	All of these

55.

Gullies are removed by:

A.	Pan breaking	B.	Levelling
C.	Ridge terracing	D.	All of these

56.

An important agrostological technique to check soil erosion in the initial stages is:

A.	Ley farming	B.	Land retirement
C.	Basin listing	D.	Contour farming

57.

Which of the following plants are used as wind breaks?

A.	Zizpyhus and Calotropis	B.	Dalbergia and Delonix
C.	Delonix and Albizia	D.	Morinda and Anona

58.

The most significant and initial requirement for dry farming is:

A.	Shallow ploughing	B.	Development of textures
C.	Animal husbandry	D.	Crop selection

59.

The soil permeability can be decreased due to blockers called:

A.	Pans	B.	Peds
C.	Clods	D.	None of these

60.

The removal of weeds by ploughing is called:

A.	Mulching	B.	Fallowing
C.	Tilling	D.	Contour farming