Monday, 27 October 2003 - 3:24 PM
0429

This presentation is part of : Student Competition Ten-Minute Papers, Cc, Insect Vectors in Relation to Plant Disease, Cf2, Quantitative Ecology, and F1, Crop Protection Entomology

Indirect harvest losses in cotton associated with late-season stink bug infestations

Melissa M. Willrich1, B. Rogers Leonard2, and G. Boyd Padgett2. (1) LSU Ag Center, Department of Entomology, 402 Life Sciences Building, Baton Rouge, LA, (2) LSU Ag Center, Northeast Research Station, 212 Macon Ridge Road, Winnsboro, LA

An experiment was conducted to study the interaction of southern green stink bug, Nezara viridula (L.), induced injury and boll rot epidemics in cotton. Cotton plants were subjected to excessive rainfall and humidity for five weeks at the end of the season (boll opening). Within stink bug-infested and non-infested plots of cotton, the condition of each boll was characterized for stink bug injury and boll rot symptomology. The proportion of rotted (pathogen induced tissue decay), proportion of hard locked bolls (abiotic induced locule compaction), and percent bug injury was significantly greater within stink bug-infested plots. Normal boll density and harvestable seedcotton were significantly greater in non-infested plots.

Species 1: Heteroptera Pentatomidae Nezara viridula (southern green stink bug)
Keywords: cotton boll rot

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