A. Canal system
B. Modified basin system
C. Drip irrigation
D. All the above

A. Hexagonal system
B. Contour system
C. Triangular system
D. Rectangular system

A. Triangular system
B. Rectangular system
C. Square system
D. Quincunx system

A. 3.0m
B. 3.5m
C. 2.5m
D. 2.0m

A. 65%
B. 70%
C. 80%
D. 40%

A. 25-35°C
B. 18-24°C
C. 20-25°C
D. 10-20°C

A. 0°C
B. -1°C
C. 1°C
D. 2°C

A. Absolute temperature
B. Cardinal temperature
C. Various temperature
D. All the above

A. Heat of fusion
B. Heat energy
C. Heat of vaporization
D. Mechanical heat

A. Fungal disease
B. Viral disease
C. Bacterial disease
D. Nematode disease