Stochastic Dynamic Northern Corn Rootworm Population Model

Paul D. Mitchell and Walter Riedell

No 18381, Hebrew University of Jerusalem Archive from Hebrew University of Jerusalem

Abstract: A complete life cycle model for northern corn rootworm, Diabrotica barberi Smith and Lawrence, is developed using a published single-season model of adult population dynamics and data from field experiments. Temperature-dependent development and age-dependent advancement determine adult population dynamics and oviposition, while a simple stochastic hatch and density-dependent larval survival model determine adult emergence. Dispersal is not modeled. To evaluate the long-run perform nce of the model, stochastically generated daily air and soil temperatures are used for 100-year simulations for a variety of corn planting and flowering dates in Ithaca, NY, and Brookings, SD. Once the model is corrected for a bias in oviposition, model predictions for both locations are consistent with anecdotal field data. Extinctions still occur, but these may be consistent with northern corn rootworm metapopulation dynamics.

Keywords: Crop; Production/Industries (search for similar items in EconPapers)
Pages: 31
Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:ags:hebarc:18381

DOI: 10.22004/ag.econ.18381

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