Discussion
The recommended safe storage moisture (SSM) for cereals for one year under tropical conditions is-
Answer: D
The recommended safe storage moisture is 10-12%.
Stored cereals stay sound only while their moisture is low enough to stop moulds, to keep insect and mite activity low and to keep respiration slow. Indian grain storage guidance recommends drying cereals to about 10 to 12 percent moisture (wet basis) for storage over six to twelve months, and in warm humid tropical conditions a one-year store needs the grain at the lower end of the safe range. FAO guidance on cereals sets the ceiling a little higher, at about 12 to 13 percent, so the keyed range is the cautious end of what is accepted.
13-15% is above the safe level: grain at 14 to 15 percent starts to heat and mould in a warm store. 6-7% and 8-9% are drier than is needed for cereals; they are more typical of oilseeds and pulses held for long periods, and drying cereals that far wastes energy and weight without benefit.
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