Revista Brasileira De Herbicidas 2006; 5(2): 45-56
EFFICACY OF FLUMIOXAZIN, APPLIED ISOLATEDAND MIXTURE WITH GLYPHOSATE, FOR WEED CONTROL IN CITRUS
DOI: 10.7824/rbh.v5i2.43
It was evaluate the efficacy of the herbicide flumioxazin, applied isolated and in mixture with glyphosate, in orange orchard, for control of Panicum maximum, Cenchrus echinatus, Digitaria horizontalis, Alternanthera tenella, Bidens pilosa, Malvastrum coromandelianum, Commelina benghalensis, Amaranthus spinosus and Ageratum conyzoides. The treatments were: 0.025 and 0.05 kg ha-1 of flumioxazin (plus mineral oil 0.5%); 0.025 kg ha-1 of flumioxazin plus 1,08 kg e.a. ha-1 of glyphosate (plus mineral oil 0.5%); 0.025 kg ha-1 of flumioxazin plus 1.44 kg e.a. ha-1 of glyphosate (plus mineral oil 0.5%); 1.08 and 1.44 kg e.a. ha-1 of glyphosate. It was kept two checks: weeded and hand hoed. The herbicides were applied using costal sprayer, constant pressure (30 lbf pol-2), with four nozzles Teejet XR 110.02. The equivalent spray volume was 200 L ha-1 . The weed control evaluations were realized 7, 13, 29, 50, 70 and 133 days after herbicide application, in percentages. It was also evaluated herbicide fitotoxicity toculture. The mixture of flumioxazin with glyphosate, as well as isolated glyphosate, resulted in excellent weed control, in all dosages tested. Not were observed intoxication in citrus plants.
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