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Weathermax® (MON78270) Tank-Mix Partners in Roundup Ready® Cotton

Oscar C. Sparks, Jim L. Barrentine, and Marilyn R. McClelland

ABSTRACT

Weed control with various herbicide chemistries was evaluated at the Cotton Branch Experiment Station, Marianna, AR. There were no significant differences in weed control among treatments that received more than one application of Weathermax, regardless of tank-mix partner, with respect to control of Palmer amaranth, large crabgrass, prickly sida, sicklepod, and velvetleaf. There was no advantage to adding a tank-mix partner to Weathermax, except for control of pitted morningglory. The beneficial tank mixtures for pitted morningglory control were post-directed applications of Weathermax in combination with Aim (carfentrazone) at 0.012, Valor (flumioxazin) at 0.032, or Strongarm (diclosulam) at 0.025 lb ai acre. There could possibly be some antagonism when using low rates of Aim (0.0036 lb ai acre-1) in combination with Weathermax as compared to Weathermax alone. There was no yield advantage from any tank-mix combination when compared to two applications of Weathermax





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Document last modified April 16, 2003