J.D. Green , Extension Weed Scientist, University of Kentucky
Two dicamba formulations, XtendiMaxTM (Monsanto) and EngeniaTM (BASF), received federal EPA approval in December for use with RoundupReady2Xtend soybean. In addition to federal registration, a pesticide must also be registered and approved within a state before it can be sold. The XtendiMaxTM product received state approval in early January for applications in Kentucky. The EngeniaTM product is still pending state approval, but is anticipated in the near future. These products can be applied before or immediately after planting Roundup Ready 2 Xtend Soybeans or as an in-crop application from emergence (cracking) up to and including the beginning bloom (R1 growth stage of soybeans). The RoundupReady2 Xtend soybean technology provides another tool for targeting weeds that have developed resistance to other herbicide chemistries, but should be combined with other herbicide options and weed management tools for best herbicide resistance management. Because of the chemical characteristics of dicamba, good stewardship by applicators will be required to lessen the potential for off-target movement and damage to sensitive crops and other plants.
Two dicamba formulations, XtendiMaxTM (Monsanto) and EngeniaTM (BASF), received federal EPA approval in December for use with RoundupReady2Xtend soybean. In addition to federal registration, a pesticide must also be registered and approved within a state before it can be sold. The XtendiMaxTM product received state approval in early January for applications in Kentucky. The EngeniaTM product is still pending state approval, but is anticipated in the near future. These products can be applied before or immediately after planting Roundup Ready 2 Xtend Soybeans or as an in-crop application from emergence (cracking) up to and including the beginning bloom (R1 growth stage of soybeans). The RoundupReady2 Xtend soybean technology provides another tool for targeting weeds that have developed resistance to other herbicide chemistries, but should be combined with other herbicide options and weed management tools for best herbicide resistance management. Because of the chemical characteristics of dicamba, good stewardship by applicators will be required to lessen the potential for off-target movement and damage to sensitive crops and other plants.
