Effectiveness of Tephrosia vogelii and Tephrosia candida Extracts against Common Bean Aphid (Aphis fabae) in Malawi

Table 2

Mean aphid infestation and abundance of two botanicals extracts at different concentrations.

Treatment	Aphid infestation
	1st Spray (initial)	2nd Spray	3rd Spray
Unsprayed	2.400	3.475	1.775
Soap	1.550	2.300	3.375
T. vogelii 0.5%	2.700	1.500	3.300
T. vogelii 2%	1.775	1.625	2.000
T. vogelii 5%	2.975	0.800	1.275
T. vogelii 5% wts	2.175	1.450	1.200
Karate	2.325	0.075	0.175
T. candida 0.5	3.075	2.375	3.100
T. candida 2%	1.425	1.400	3.250
T. candida 5%	2.325	2.475	3.800
T. candida 5% wts	0.95	2.225	3.000
LSD	0.51	0.56	0.37
CV %	43.0	17.6	6.1

Means followed by the same letter are not significantly different according to Fisher’s least significant difference test.