A. Hydrogen
B. Oxygen
C. Both A & B
D. None of these
A. Umbric epipedon
B. Melanic epipedon
C. Mollic epipedon
D. Ochric epipedon
A. 72 %
B. 58%
C. 62 %
D. Al of the above
A. Tetrahedral sheet
B. Triple octahedral sheet
C. Octahedral sheet
D. Both A & C
A. Positive
B. Negative
C. Zero
D. All of the above
A. Aridisols
B. Alfisols
C. Mollisols
D. None of the above
A. Physical
B. chemical
C. Biological
D. both A & B
A. Reduced soil disturbance through no-till or minimum till
B. Residue return to keep at least 30% of soil covered
C. Crop rotations for better utilization of available water & nutrients
D. all of the above
A. Water distribution
B. Water management
C. both A & B
D. None of the above
A. 65 – 75%
B. 72 – 62%
C. 85 – 95%
D. 75% – 80%