A. Sub-surface drainage
B. Surface operations
C. Drainage
D. All of the above
Soil Science
………is probably the most important growth limiting factor in acid soils especially those having pH below 5.0-5.5?
A. Nitrogen
B. Potassium
C. Aluminium
D. Calcium
There are twelve soil orders found in the world of which six soil orders have been recognized at various locations are……..?
A. Andisols, Gelisols, Histosols, Spodosols, Oxisols, Ultisols
B. Entisols, Inceptisols, Aridisols, Alfisols, Mollisols, Vertisols
C. Andisols, Aridisols, Histosols, Vertisols, Regosols, Libosols
D. The above statement is wrong
swelling clay soils, develop cracks due to greater proportion of swelling type clays:
A. Alfisols
B. Ultisols
C. Vertisols
D. None of the above
Systematic examination of soil in the field and laboratories, their description and grouping according to classification system:
A. Reconnaissance survey
B. Detailed soil survey
C. Soel survay
D. The answer of statement is not in options
………. particles range in diameter between 0.02 to 0.002 mm:
A. Sand
B. Silt
C. Clay
D. None of the above
Depending on the percentage of sand, silt, clay, soils are divided into ……. textural classes:
A. 12
B. 13
C. 14
D. 09
Based on their diameters, soil pores are divided into:………?
A. Macro pores
B. Meso pores & Micro pores
C. Both A & B
D. The above statement is wrong
Water is the major constituent of all living creatures. Biomass of plants is composed of ……..% water:
A. 65 – 75%
B. 72 – 62%
C. 85 – 95%
D. 75% – 80%
The planned development, distribution and use water resources:
A. Water distribution
B. Water management
C. both A & B
D. None of the above