Kudzu eradication trials testing fifteen herbicides
Two studies examined herbicide treatments for controlling kudzu [Pueraria lobata (Willd.) Ohwi]. In one study, fifteen herbicides were tested at 1 or 2 rates at 5 locations. Treatments and re-treatments occurred over a 2-yr period. The most effective herbicides were picloram pellets (4.7 and 5.8 lb ai/a), tebuthiuron pellets (6 lb ai/a), and picloram + 2,4-D (1 + 4 and 1.5 + 6 lb ai/a). Eradication was achieved on plots at one or more locations with these treatments plus spot re-treatments. Kudzu was more difficult to control as patch age increased. The second study compared picloram + 2,4-D (1 + 4 lb ai/a) and dicamba (4 lb ai/a) applied with spray volumes (herbicide + water) of 40, 60, and 80, gal/a and at four timings. Control was best when treatments were applied in late May through October. Carrier volume was not a siginificant variable.