Denitrification losses of nitrogen in rice can be prevented by placing ammonical fertilizers into the
A. Oxidized zone
B. Reduced zone
C. Calcified zone
D. Hydronized zone
Answer: Option B
A. Oxidized zone
B. Reduced zone
C. Calcified zone
D. Hydronized zone
Answer: Option B
Downy Mildew of Bajra caused by
A. C. fusiformis
B. S. graminicola (Sclerospora)
C. T. penicillica
D. All of the above
The criteria of essentiality of nutrients in plants was given by
A. D. J. Nicholas
B. Arnon and Stout
C. J. S. Kanwar
D. M. S. Swaminathan
A. Manganese
B. Boron
C. Zinc
D. Iron
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