The suitable fertiliser for foliar spray is
A. Calcium ammonium nitrate
B. Urea
C. Anhydrous ammonia
D. None of the above
Answer: Option B
A. Calcium ammonium nitrate
B. Urea
C. Anhydrous ammonia
D. None of the above
Answer: Option B
Sources of negative charges on silicate clays is/are
A. Exposed crystal edges
B. Isomorphus substitution
C. Anion exchange
D. All of these
The most conspicuous chemical change that take place when soil is flooded is reduction of
A. Fe
B. P
C. S
D. None of these
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