Impact of the Invasive Brown Marmorated Stink Bug, Halyomorpha halys (Stål), in Mid-Atlantic Tree Fruit Orchards in the United States: Case Studies of Commercial Management

Table 1

Total number of targeted brown marmorated stink bug insecticide applications, mean interval (d) ± SEM between insecticide applications, and mean A.I.M. score ± SEM and total A.I.M. score in apple plots from 2010 to 2011 at four commercial orchards.

Orchard	Number of targeted		Mean insecticide		A.I.M. score
	insecticide applications		interval ± SEM^*		Mean ± SEM^*		Total
	2010	2011	2010	2011	2010	2011	2010	2011
A	3	20	10.6 ± 1.9	7.2 ± 0.4	0.06 ± 0.02	0.19 ± 0.02	0.89	5.26
B	5	7	22.2 ± 5.7	18.8 ± 2.5	0.40 ± 0.10	0.46 ± 0.10	3.63	5.47
C	4	12	18.5 ± 1.3	11.4 ± 1.4	0.18 ± 0.05	0.29 ± 0.06	1.78	5.31
D	7	42	10.6 ± 1.0	4.1 ± 0.3	0.21 ± 0.05	0.18 ± 0.02	3.28	8.16
All Orchards	19	81	14.0 ± 1.3 a	7.1 ± 0.6 b	0.20 ± 0.03 a	0.24 ± 0.02 a	9.58	24.2

^*Means for all orchards combined, compared between years within a paired column, followed by a different letter are significantly different (𝑃<0.05).