The series of transformation which a nutrient undergoes in the biosphere before returning to its original formed is called_______________?

A. Crop rotation
B. Crop sequence
C. Cropg system
D. Crop management

A. 5-20 Kg
B. 2-3Kg
C. 5-7 Kg
D. 20-25 Kg

A. A fruit is a product of flower
B. A fruit is a product of ovary
C. A fruit is a mature ovary that contain seed
D. A fruit is post-fertilization product of the pistil

A. 1970
B. 1968
C. 1971
D. 1978

A. 50°c for 3-7 days
B. 45°c for 3-8 days
C. 54°c for 2-6 days
D. None of the above

A. Soil water use
B. Crop water use efficiency
C. Soil plant water relationship
D. Water intensity