Stochastic Dynamic Northern Corn Rootworm Population Model

Paul Mitchell () and Walter Riedell

Center for Agricultural and Rural Development (CARD) Publications from Center for Agricultural and Rural Development (CARD) at Iowa State University

Abstract: Using a published single-season model of adult population dynamics and data from field experiments, Mitchell and Riedell develop a complete life cycle model for northern corn rootworm. To develop the life cycle model, Mitchell and Riedell use temperature-dependent development and age-dependent advancement to determine adult population dynamics and oviposition. They also use a simple stochastic hatch and density-dependent larval survival model to determine adult emergence. Mitchell and Riedell then evaluate the long-run performance of the model by using stochastically generated daily air and soil temperatures for 100-year simulations for a variety of corn planting and flowering dates in Ithaca, NY, and Brookings, SD. After correcting for a bias in oviposition, they show that the model's predictions for both locations are consistent with anecdotal field data.

Date: 2000-01
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