Table 2.

Mortality of adults (mean ± SE) of four insect species exposed for 7 and 14 days to untreated commodities (dry control)

Commodity	Exposure time (days)	R. dominica	S. oryzae	S. zeamais	T. castaneum
Wheat	7	0.0 ± 0.0a	1.3 ± 0.8		0.8 ± 0.8
	14	2.8 ± 1.5	6.4 ± 1.2		2.0 ± 0.9
Short-grain rice	7	0.8 ± 0.8	1.7 ± 0.8
	14	6.5 ± 2.0b	3.8 ± 0.5
Long-grain rice	7	5.1 ± 1.6	1.7 ± 1.7
	14	3.6 ± 1.3	17.6 ± 3.3
Maize	7			1.6 ± 1.2	0.0 ± 0.0
	14			4.0 ± 1.7	0.0 ± 0.0

Each mean is based on n = 5

^a n = 4, 1 missing value

^b n = 2, 3 missing values