Weed control and herbicide selectivity in perennial cotton associated with maize and cowpea.
In a trial at Patos in 1979, the efficiency of several herbicides in controlling Eleusine indica, Rhynchelytrum roseum, Cenchrus echinatus, Boerhavia diffusa, Acanthospermum hispidum and Ageratum conyzoides and their phytotoxic effects were studied in cotton var. Marie Galante intercropped with maize and cowpea. Diuron and fluometuron were the most phytotoxic with cowpea being the most susceptible crop. Most efficient control of broadleaved weeds was obtained with diuron, fluometuron and diuron + pendimethalin. Highest cotton and maize yields were obtained with 2 kg fluometuron/ha pre-em.