Italian rye grass is the “900-pound gorilla,” for Texas wheat producers, due in large part to herbicide resistance.
“Annual or Italian ryegrass is an important weed in Texas winter wheat production and has multiple documented herbicide resistant biotypes around the world,” said David Drake, Texas A&M AgriLife Extension Integrated Pest Management agent, Commerce, Texas.
Drake, addressing the 36th annual Texas Plant Protection Association Conference last December in Bryan, said biotypes resistant to ACCase (Group 1) and ALS (Group 2) herbicides have been reported in Texas and especially in Northeast Texas…