A straight fertiliser is one which
A. Comes straight from the factory
B. Has one major nutrient
C. Dissolves quickly
D. None of the above
Answer: Option B
A. Comes straight from the factory
B. Has one major nutrient
C. Dissolves quickly
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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