Which of the following micronutrients are most widely deficient in Indian soils?
A. Zn and B
B. Zn and Fe
C. Zn and Mn
D. Zn and Cu
Answer: Option A
A. Zn and B
B. Zn and Fe
C. Zn and Mn
D. Zn and Cu
Answer: Option A
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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