The nitrogen losses in rice can be reduced by placing NH4 fertilizer in
A. Oxidised zone
B. Reduced one
C. Both A and B
D. None of these
Answer: Option B
A. Oxidised zone
B. Reduced one
C. Both A and B
D. None of these
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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