Could CRW develop resistance?

Published on: 11:26AM Oct 09, 2009
Caydee Savinelli

Many growers currently use corn hybrids stacked with Bt and glyphosate-tolerant traits to control corn rootworm and manage weeds. The volunteer corn that emerges the following year is considered a weed problem, but it may be a “safe haven” for corn rootworms.
 
The volunteer corn includes second-generation Bt, which equates to a lower dosage of the Bt gene – enough to stun, but not always eliminate the corn rootworm. Exposing the corn rootworm larvae present in the field to less-than toxic levels of Bt can decrease its susceptibility to the Bt trait. This could potentially foster development of harder-to-control corn rootworm.  
 


Check out some Syngenta solutions to manage this challenge.  How do you control volunteer corn? 




 

Corn rootworm feeding on volunteer corn roots

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