Revista Brasileira De Herbicidas 2000; 1(2): 173-178
Residual effect of chlorimuron-ethyl tank mixed with glyphosate applied as a burndown treatment for pre-site preparation in soybean
DOI: 10.7824/rbh.v1i2.333
An experiment was conducted on a Cerrado sandy soil during 1999/2000. The objective ofthe experiment was to evaluate the residual effect of chlorimuron-ethyl tank mixed with glyphosate applied as burndown treatment for pre-site preparation, to control Bidens pilosa in preemergence. The experimental design was a randomized complete block with four replications. Treatments were as follows: glyphosate at 720 and 1440 glha, glyphosate+chlorimuron-ethyl at 720+ IO and 720+20 glha, glyphosate+chlorimuron-ethy”I+flumioxazin at 720+20+40 glha and glyphosate+ 2,4-0 at 720+460 glha. An untreated check was also included. Treatments were applied by a CO2 backpack sprayer, using 2.1 kg/crrr’ ofpressure, with four 110.02 XR nozzles, and spray volume of200 Ilha. Evaluations ofpercentage control and number of Bidens pilosa per square meter were made at )5, 30 and 45 days after treatments. Chlorirnuron-ethyl+glyphosate at 20+ 720 g/ha and chlorimuron-ethyl+flumioxazin+glyphosate at 20+40+720 g/ha showed excellent residual control for Bidens pilosa. Consequently, chlorimuron-ethyl can be used as an alternative and safe herbicide in soybean for pre site preparation tank mixed with glyphosate.
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