Patterns of Tarnished Plant Bug (Hemiptera: Miridae) Resistance to Pyrethroid Insecticides in the Lower Mississippi Delta for 2008-2015: Linkage to Pyrethroid Use and Cotton Insect Management.

A similar trend was observed with pairwise comparisons across the field colonies only ( n = 43), but not with comparisons across the different tests with the USDA ARS laboratory colony where the relationship between observations at 3 h with the 15 μg per vial dose and the 24-h LC 50 was highly significant ( r = −0.8818, P < 0.0001) and similar to that previously reported by Snodgrass et al.

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When these South Delta metrics were studied by pairwise simple correlation using Multivariate Procedures in JMP Version 11.1, significant or near-significant correlations were detected between acres of cotton and kg of pyrethroid/acre of harvested cropland ( n = 32, r = 0.3549, P = 0.0463), number of applications for plant bugs and year ( n = 32, r = 0.3252, P = 0.0694), and acres of cotton and year ( n = 32, r = −0.3553, P = 0.0460).

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