The purpose of this study was to evaluate the effectiveness of non-Bt corn, Bt corn, and soil insecticide, either alone or in combination, for management of larval corn rootworm. Evaluation of corn hybrids included DeKalb non-RW Bt, DeKalb Smartstax RIB, Pioneer Optimum AcreMax Xtreme, and Pioneer Optimum AcreMax1. Soil insecticides evaluated were Aztec-SB 9.34G and Index 2.80 CS.

The purpose of this study was to evaluate the effectiveness of Bt corn, with and without soil insecticides, for management of corn rootworm. Evaluation of Bt hybrids included Agrisure 3000GT, Agrisure 3122 RIB, DeKalb YieldGard VT3, and Pioneer Optimum AcreMax1. Soil insecticides evaluated were Aztec 2.1G, Aztec-SB 4.67G, Capture LFR 1.5SC, Counter-SB 20G, Force 250CS, and SmartChoice-SB 5G.

The purpose of this study was to evaluate the effectiveness of Bt corn and soil insecticides, either alone or in combination, for the control of corn rootworm. Evaluation of Bt hybrids included SmartStax, SmartStax with a blended refuge (refuge in the bag), and Herculex XTRA. Soil insecticides evaluated were SmartChoice-SB, Counter-SB, Aztec, and Force.

In this study we evaluated soil-applied insecticides, seed treatments, and transgenic corn for their effectiveness in protecting corn roots from injury due to feeding by corn rootworms.

Cross-resistance occurs when resistance to one insecticide confers resistance to additional insecticides. Past research has found that western corn rootworm populations in Iowa are resistant to three of the four rootworm Bt traits (Cry3Bb1, mCry3A, and eCry3.1Ab) because of cross-resistance among these traits. The purpose of this study was to better understand the effects of cross-resistance in the field. The Northeast Research and Demonstration Farm represents an area in Iowa in which Cry3Bb1 resistance by western corn rootworm has been present since 2009. To further characterize the effect of Bt-resistance on corn rootworm management, we measured root injury to Agrisure Duracade (mCry3A + eCry3.1Ab), DeKalb YieldGard VT Triple (Cry3Bb1), and Pioneer HXX (Cry34/35Ab1).

The purpose of this study was to evaluate the effectiveness of Bt corn and soil insecticides, either alone or in combination, for management of corn rootworm larvae. Evaluation of Bt hybrids included Agrisure 3111, Agrisure 3122, Herculex XTRA, Pioneer Optimum AcreMax1, Smartstax, and YieldGard VT3. Soil insecticides evaluated were Aztec 2.1G, Aztec-SB 4.67G, Capture LFR 1.5FL, Counter-S

The purpose of this study was to evaluate the effectiveness of transgenic corn and soil insecticides, either alone or in combination, for the control of corn rootworm. Evaluation of Bt hybrids included Mycogen brand SmartStax and Herculex XTRA, and Dekalb brand YieldGard VT3. Soil insecticides evaluated were SmartChoice, Aztec, and Counter.

The purpose of this study was to evaluate the effectiveness of Bt corn and soil insecticide,either alone or in combination, for management of larval corn rootworm. Evaluation of Bt hybrids included Agrisure 3000GT, Agrisure 3111, Agrisure 3122 RIB,DeKalb YieldGard VT Triple RIB, and Pioneer Optimum AcreMax1. Soil insecticides evaluated were Aztec-SB 4.67G, Capture LFR 1.5SC, Force 250CS, and Precept 3G.

The purpose of this study was to evaluate the effectiveness of Bt corn and soil insecticides, either alone or in combination, for management of corn rootworm. Evaluation of Bt hybrids included Smartstax, YieldGard VT3, Pioneer Optimum AcreMax1, Agrisure 3000GT, and Herculex XTRA. Soil insecticides evaluated were SmartChoice-SB 5G, Counter-SB 20G, Aztec-SB 4.67G, Lorsban 15G, Capture LFR 1.5FL, Aztec 2.1G, Force 3G, and Force 250CS.

The purpose of this study was to evaluate the effectiveness of transgenic corn and soil insecticides, either alone or in combination, for the control of corn rootworm.