Agriculture MCQs

2794 MCQs  (Page 260 of 280)

Sustainable Technologies to Control Water-Logging:
A. Installation of tube-wells for irrigation and vertical drainage.
B. Planning and designing of future canals on proper lines.
C. Planting of eucalyptus in water-logged areas.
D. All of these
Sustainable technologies to improve soil fertility and physical condition:
A. Balance use of npk fertilizers according to the need of crops.
B. Following proper crop rotation (shallow rooted and deep root crops) in the cropping session.
C. Regular use of fym, composts, acidic mulches, green manures and organic fertilizers to increase om content of soil.
D. All of the above
Soil erosion Occurs mainly in:_________?
A. Inceptisols, mollisols
B. Alfisols, entisols
C. Both a & b
D. None of the above
Water-erosion can be reduced / controlled by:___________?
A. Provision of surface-cover that intercepts the rain before hitting the soil.
B. Reducing the amount of runoff by promoting infiltration.
C. Both a & b
D. None of the above
In low-rainfall areas, huge shifting sand dunes are commonly found, particularly near human habitations. Techniques of afforesting the shifting dunes needed to be implemented. These techniques consist of___________?
A. Treatment of shifting sand-dunes by fixing barriers in parallel stripes or in a chess-board design, using the local shrub material starting from the crest of the dunes to protect the seedlings from burial or exposure by the blowing of sand.
B. Protection against biotic interference
C. Both a & b
D. None of these
The lands which are rich in soluble salts and exchangeable sodium:
A. Saline soil
B. Saline-alkaline
C. Alkaline
D. None of the above
The most suitable species for reclamation of sandy soils is:_________?
A. Casuarina equiselifolia
B. Acacia spp
C. Azadirachta indica
D. All of the above