Table 2.

Effect of plant extract type and concentration on the percentage of larval mortality

Type of extract	Larval instar	Concentration mg/ml					Average effect of the extract type on the larval stage
		0	5	10	15	20
Alcoholic leaves	First instar	8.13	37.63	43.89	47.69	89.11	45.29
	Second instar	9.27	17.08	30.73	39.36	68.64	33.01
	Third instar	8.13	17.31	20.04	31.66	53.19	26.07
Alcoholic fruits	First instar	11.54	39.12	46.13	48.84	88.69	46.86
	Second instar	9.27	29.08	43.19	52.50	68.20	40.45
	Third instar	9.27	27.62	42.78	55.72	57.11	38.50
Alkaloids leaves	First instar	13.30	53.21	55.85	72.22	88.46	56.61
	Second instar	11.54	46.13	48.88	67.84	81.74	51.23
	Third instar	8.13	43.47	44.32	63.15	67.64	45.34
Alkaloids fruits	First instar	9.27	47.03	53.85	69.37	88.97	53.70
	Second instar	11.54	45.67	46.61	59.22	72.05	47.02
	Third instar	9.27	36.37	36.38	51.43	58.13	38.32
Average effect of extract concentration		9.89	36.64	42.72	54.92	73.49
LSD (P≤0.05)	Larval stage=2.85; For extract concentration=1.84; Intervention=6.36

LSD: Least significant difference