Agricultural Engineering/Agronomy, Central Iowa, and BioCentury Research Farms

Evaluation of RNA Interference (RNAi) and Bt Traits for Management of Larval Corn Rootworm in Central Iowa

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Abstract

The purpose of this study was to evaluate the effectiveness of two Bt rootworm traits, alone or in combination with an RNA interference trait (DvSnf7), for management of corn rootworm larvae (Diabrotica spp.). The three rootworm trait packages evaluated in this study were: 1) a pyramid of Cry3Bb1 and Gpp34/Tpp35Ab1 (SmartStax®), 2) a pyramid of Cry3Bb1, Gpp34/Tpp35Ab1 and DvSnf7 (SmartStax® PRO) and 3) a pyramid of Cry3Bb1 and DvSnf7 (VT4ProTM). The rootworm trait SmartStax® PRO and VT4ProTM were replicated twice, using two different hybrids with each trait package. Additionally, a hybrid lacking any rootworm active transgenic traits (VT Double Pro®) was included in this study as an untreated check.

How to Cite:

Gassmann, A. J. & Brenizer, B., (2025) “Evaluation of RNA Interference (RNAi) and Bt Traits for Management of Larval Corn Rootworm in Central Iowa”, Iowa State University Research and Demonstration Farms Progress Reports 2024(1), 24-26.