Field evaluation of two entomopathogenic fungi; Beauveria bassiana and Metarhizium anisopliae as a biocontrol agent against the spiny bollworm, Earias insulana Boisduval (Lepidoptera: Noctuidae) on cotton plants

Egyptian Journal of Biological Pest Control

Table 2 Reduction percentages of Earias insulana infested cotton bolls through 2019 season

Treatments		Inspection before treatment	Days after treatments
			1st spray (July 8)				2nd spray (July 22)				3rd spray (August 5)
			Mean	% Reduction	Mean	% Reduction	Mean	% Reduction	Mean	% Reduction	Mean	% Reduction	Mean	% Reduction
			7 days		14 days		7 days		14 days		7 days		14 days
Control		5.50^ab	17.00^a	-	23.00^a	-	28.00^a	-	32.00^a	-	35.00^a	-	39.00^a	-
Metarhizium anisopliae	S1	6.00^a	3.80^b	79.54	3.63^b	85.48	2.75^b	91.02	2.65^b	92.40	1.75^b	95.42	2.50^b	94.12
Metarhizium anisopliae	S2	4.50^b	3.80^b	72.72	3.61^b	80.75	2.85^b	87.59	2.65^b	89.87	1.40^b	95.12	2.00^b	93.73
Beauveria bassiana	S1	5.00^ab	4.55^b	70.61	3.95^b	81.04	3.45^b	86.48	3.15^b	89.16	2.25^b	92.93	3.25^b	90.83
Beauveria bassiana	S2	5.50^ab	4.31^b	74.69	3.92^b	82.89	3.25^b	88.42	3.15^b	89.16	2.30^b	92.78	3.25^b	90.83
LSD		1.122	0.913		1.833		1.360		0.019		1.290		0.965

Means in the same column followed by different letters are significantly different, P≤0.05