Effects of abamectin on lesser grain borer, Rhyzopertha dominica F. (Coleoptera: Bostrichidae), infestation on some stored grains

Egyptian Journal of Biological Pest Control

Table 4 Amount of insect-damaged grains and dockage (g ± SE), 10 weeks after the treatment of 5 grain species with abamectin

Insecticide	Rate (g kg⁻¹)	Damaged grains and dockage (g ± SE)
Insecticide	Rate (g kg⁻¹)	Wheat	Barley	Rye	Oats	Triticale
Damaged grains
Abamectin	0.25	0.58 ± 0.0a	0.15 ± 0.0a	0.28 ± 0.0a	0.22 ± 0.0ab	0.24 ± 0.0a
	0.5	0.44 ± 0.1a	0.18 ± 0.0a	0.24 ± 0.0a	0.41 ± 0.1ab	0.11 ± 0.0a
	1.0	0.50 ± 0.1a	0.32 ± 0.1a	0.36 ± 0.1a	0.14 ± 0.0a	0.11 ± 0.0a
Infested sample	0	6.83 ± 0.3b	3.04 ± 0.2b	6.85 ± 0.2b	0.44 ± 0.1b	10.26 ± 0.2b
F		11.00	11.95	29.99	3.51	35.93
P		< 0.05	< 0.05	< 0.05	< 0.05	< 0.05
Dockage
Abamectin	0.25	0.01 ± 0.0a	0.01 ± 0.0a	0.01 ± 0.0a	0.01 ± 0.0a	0.01 ± 0.0a
	0.5	0.01 ± 0.0a	0.01 ± 0.0a	0.01 ± 0.0a	0.01 ± 0.0a	0.01 ± 0.0a
	1.0	0.00a	0.00a	0.00a	0.00a	0.00a
Infested sample	0	2.04 ± 0.1b	1.05 ± 0.1b	3.80 ± 0.2b	0.27 ± 0.0b	5.20 ± 0.2b
F		21.81	25.12	41.81	20.21	40.89
P		< 0.05	< 0.05	< 0.05	< 0.05	< 0.05

*For each parameter separately, means within columns followed by the same letter are not significantly different; Tukey-Kramer (HSD) test at P > 0.05; in all cases, df = 8, 70; P < 0.05