Classic Herbicide Update
What effect does Classic use have on spotted wilt and peanut yields, and should you still use it?
By Dr. Eric Prostko, Extension Weed Specialist, University
Classic was first registered for use in peanuts in 1989. Currently, 10 to 20 percent of the peanut acres in Georgia are treated with this herbicide for late-season control of Florida beggarweed. Some evidence has suggested that Classic applications may have an influence on the expression of tomato spotted wilt virus (TSWV).
From 2000 to 2007, my colleagues and I conducted 15 field trials with six different peanut varieties to investigate this issue. The varieties were as follows: Georgia Green, AP-3, C-99R, AT-201, GA-02C, GA-03L.
The following are questions we wanted to answer through this research and what we determined.
Should a peanut grower use Classic?