Last discovered essential nutrient for plant is
A. Silicon
B. Nickel
C. Vanadium
D. Zinc
Answer: Option B
A. Silicon
B. Nickel
C. Vanadium
D. Zinc
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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