During 1988 to 1991, 10 kinds of herbicide were used in the tobacco fields of about 153 ha. so as to have their effects tested. It was found that application of pre-emergence herbicide, Devrinol (750 to 1125 g, a.i./ha,) and Daul (1125 to 1290 g.a.i./ha) for soil treatment was highly effective against annual monocotyledonous and certain annual broadleafed weeds and the Use of post-emergence herbicide, Gallant, Nc 302, Oncide-p (90 to 120g.a.i./ha.) was highly effective against agramineae weeds in 3 to 5 leaves period. The effect of the three pre-emergence herbicides was affected by soil condit...
