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Node-injury scale to evaluate root injury by corn rootworms (Coleoptera: Chrysomelidae).
TLDR
The node-injury scale is developed to more accurately quantify corn rootworm larval injury based on the proportion of nodal roots that contain feeding injury, and the minimum node-Injury score that causes economic damage under varying degrees of environmental stress is suggested. Expand
Study of Migratory Flight in the Western Corn Rootworm (Coleoptera: Chrysomelidae)
TLDR
Research on flight activity of the western corn rootworm, Diabrotica vir gifera virgifera LeConte, is presented and periodicity was observed for both types of flight. Expand
Use of the Pherocon AM Trap as a Scouting Tool for Predicting Damage by Corn Rootworm (Coleoptera: Chrysomelidae) Larvae
TLDR
Because the P Herocon AM sampling technique predicts larval damage as well as the currently standard plant-count method and may have advantages over it, a sampling plan is proposed for the use of the Pherocon AM trap as a tool for scouting corn rootworms. Expand
Transgenic corn for control of the European corn borer and corn rootworms: a survey of Midwestern farmers' practices and perceptions.
TLDR
Farmers' perceptions of transgenic corn designed to control the European corn borer, Ostrinia nubilalis (Hübner), and corn rootworms, Diabrotica spp, are evaluated to help guide researchers, extension specialists, and policy makers in designing insect resistance management and integrated pest management programs. Expand
Stochastic Simulation for Characterizing Ecological Spatial Patterns and Appraising Risk.
TLDR
The theory and a case study are presented for a class of techniques known as stochastic simulation that allows the environmental researcher, policy-maker, or manager the opportunity to characterize uncertainty and economic or other losses, and to determine areas requiring treatment and additional samples. Expand
Yield Response of Corn Subjected to Western Corn Root worm (Coleoptera: Chrysomelidae) Infestation and Lodging
TLDR
Lodging must be an important factor in the relation between root worm infestation and yield loss as dry weight and yield were more consistently reduced by lodging than by rootworm infestation treatments. Expand
Spatial Dispersion of Corn Rootworm Larvae (Coleoptera: Chrysomelidae) in Iowa Cornfields
TLDR
Most populations of corn rootworm larvae exhibited aggregated dispersion patterns, and a discussion of possible reasons for aggregation is presented. Expand
Development and Validation of Models for Predicting the Seasonal Emergence of Corn Rootworm (Coleoptera: Chrysomelidae) Beetles in Iowa
TLDR
These models do not eliminate scouting for adult corn rootworms but should improve the scouting efficiency by allowing growers to focus scouting to key periods, such as peak beetle emergence, when populations should be at their maximum abundance in the field. Expand
Value of Adult Corn Rootworm (Coleoptera: Chrysomelidae) Population Estimates in Pest Management Decision Making
TLDR
The optimal strategy for managing corn root worms in Iowa in this study was not to sample for adults and always to treat corn following corn with a soil insecticide at planting time. Expand
Regulation of Migratory Flight by Juvenile Hormone Mimic and Inhibitor in the Western Corn Rootworm (Coleoptera: Chrysomelidae)
TLDR
Ovarian development was negatively correlated with migratory flight activity, which substantiates the inverse relationship between flight and reproduction and moderates the considerable flight capabilities of the WCR, permitting adaptation of this species to a dynamic, agricultural ecosystem. Expand
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