Table 1.

Mortality of adults (mean ± SE) of four insect species exposed for 7 and 14 days to commodities treated with 100 μl of distilled water (wet control)

Commodity	Exposure time (days)	R. dominica	S. oryzae	S. zeamais	T. castaneum
Wheat	7	16.5 ± 4.3	1.2 ± 0.5		3.2 ± 2.1
	14	3.0 ± 1.3a	3.7 ± 0.8		2.4 ± 1.2
Short-grain rice	7	3.3 ± 1.6	0.0 ± 0.0
	14	3.0 ± 1.7b	1.2 ± 0.5
Long-grain rice	7	14.3 ± 4.4c	1.6 ± 0.4
	14	3.3 ± 1.8d	17.1 ± 4.8
Maize	7			2.8 ± 1.4	0.0 ± 0.0
	14			2.4 ± 1.0	0.8 ± 0.8

Each mean is based on n = 5

^a n = 4, 1 missing value

^b n = 4, 1 missing value

^c n = 4, 1 missing value

^d n = 3, 2 missing values