Pesticidal and pest repellency activities of a plant derived triterpenoid 2α,3β,21β,23,28-penta hydroxyl 12-oleanene against Tribolium castaneum

Table 1 LD ₅₀ calculation for pesticidal activity using probit analysis

Recording time	Dose (mg/cm²)	% of Average mortality	% Crrected mortality	Regression equation	LD₅₀(mg/cm²)	95% Confidence limits
						Lower	Upper
Record after 24 hours	1.77	86.60	87	Esimate 1	0.38	6.58	16.32
	1.77	86.60		Y = 2.15 + 3.42X
	0.88	80.00	80	Esimate 2
	0.44	63.30	63	Y = 1.92 + 1.58X
	0.22	33.30	33	Y = 1.92 + 1.58X
Record after 48 hours	1.77	90.00	90	Esimate 1	0.34	9.54	22.55
	0.88	86.60	87	Y = 1.62 + 1.64X
	0.44	63.30	63	Esimate 2
	0.22	40.00	40	Y = 3.23 + 1.31X

ISSN: 0717-6287