In tree crops fertiliser is not added near the trunk because of
A. less roots there
B. termites
C. shade
D. All of these
Answer: Option A
A. less roots there
B. termites
C. shade
D. All of these
Answer: Option A
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
Join The Discussion