New soils, no or little profile development:
New soils, no or little profile development:
A. Entisols
B. Inceptisols
C. Andisols
D. Aridisols
A. Entisols
B. Inceptisols
C. Andisols
D. Aridisols
A. 23 %
B. 2.3 %
C. 17 %
D. 1.7 %
A. Clay
B. Silk
C. Water
D. Smecitie
A. TSP
B. DAP
C. MAP
D. None of the above
A. 20 mg of ca2+
B. 12 mg of Mg2+
C. 9 mg of Al3+
D. All of the above
A. Sub-surface drainage
B. Surface operations
C. Drainage
D. All of the above
A. Wind erosion
B. land sliding
C. Rainfall
D. None of these