Incidence of a New Pest, the Cotton Mealybug Phenacoccus solenopsis Tinsley, on Sesame in North Ethiopia

Table 3

Means of cotton mealybug incidence in stony and stone free sesame farms with 95% confidence limits.

Farm stoniness		Incidence (%)	s.e.	CV	95% confidence limits
					Lower	Upper
Stone free	132	50.5	3.91	7.75	42.8	58.3
Stony/few stones	48	85.8	2.55	2.98	80.7	90.8
Total	180