Effect of Ammonium Sulfate and Bentazon on Sethoxydim Absorption

Abstract

The effect of ammonium sulfate on absorption of 14 C-sethoxydim applied alone and with bentazon was studied in large crabgrass. Adding ammonium sulfate to 14 C-sethoxydim increased 14 C absorption 6-fold at 0.5 h after application but did not affect the amount of 14 C absorbed 1 or 4 h after application. Applying bentazon with 14 C-sethoxydim reduced 14 C absorption 26%. When 14 C-sethoxydim was applied with bentazon and ammonium sulfate, 14 C absorption and translocation were similar to those with 14 C-sethoxydim alone.