Ratoon cropping is common in irrigated:
A) Wheat
B) Pearl millet
C) Chick pea
D) Rice
Multiple cropping system helps in:
A) Stabilizing crop production
B) Best use of land resources
C) Control of pest and diseases
D) All of the above
A suitable variety for multiple cropping system should have:
A) Resistance to biotic stress
B) Tolerance to abiotic stress
C) Tolerance to shade
D) All of the above
The crop species to be used in multiple cropping system should differ in:
A) Rooting pattern
B) Plant height
C) Diseases and insects
D) All of the above
Desirable traits for multiple cropping system include:
A) Photo insensitivity
B) Uniform ripening
C) Rapid seedling growth
D) All of the above
In sorghum and cereals, higher yields at closer spacings are expected from:
A) High tillering cultivars
B) Low tillering cultivars
C) Shade tolerant cultivars
D) Both b and c
In cowpea, greengram, blackgram, and soybean, higher yields at closer spacings are expected from:
A) Spreading types
B) Semispreading types
C) Erect types
D) All of the above

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