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Soil Science Questions And Answers.

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Exercise :: Soil Science
1.Generally speaking, only level to nearly level (0-2 % slope) & gently sloping lands (2-5 % slope) should be:
A. brought under range crops
B. Forests
C. Both a & b
D. None of the above
2.calcium is immobile in plants. Therefore, under conditions of deficiency, young tissue is affected first. calcium deficiency symptoms are:
A. Death of terminal buds; roots tips also affected
B. Abnormal dark green appearance of foliage
C. Premature shedding of blossoms & buds & weakened stem
D. All of the above
3.Potassium plays a significant role in the transport of water & nutrients through the plant in the xylem. When the supply of K is reduced, the transportation of ____ is depressed:
A. Nitrates, Phosphates
B. Calcium, magnesium
C. Amino acids
D. All of above
4.The solid wastes generated in Pakistan are about: __?
A. 47,920 tonnes/day
B. 65, 772 tonnes/day
C. 12250 tonnes/day
D. All of the above
5.Almost one third of the land area through out the world is affected by land degradation. Pakistan�s agriculture sector though facilitates employment to >65% but is facing challenges from:
A. Erosion
B. Salinity
C. Waterlogging
D. All of the above