Revista Brasileira De Herbicidas 2005; 4(1): 18-24
EVALUATION OF SELECTIVITY AND EFFICACY OF FORMULATION MIXTURES OF BENTAZON AND ACIFLUORFEN APPLIED TO SOYBEANS
DOI: 10.7824/rbh.v4i1.7
A trial was carried out to test the efficacy and selectivity of different
formulations and doses of bentazon with acifluorfen, applied in post emergence of
soybean (cv. Doko). The following treatments were tested in a sandy Latosoil, in
Prudente de Morais, Brazil: bentazon+acifluorfen (480+204 g/ha and 600+255 g/ha)
with or without mineral oil (0,25% v/v); bentazon+acifluorfen (480+168 g/ha and
600+210 g/ha) with or without mineral oil (0,25%v/v); and bentazon +acifluorfen
600+160 g/ha and weeded and no weeding checks. Independently of the doses and
formulations (with or without mineral oil) all chemicals provided efficient control of
Amaranthus hybridus, Galinsoga parviflora and Solanum americanum. Significant
differences were not observed among the productivities for the several chemical
treatments, but reduced the interference of weeds caused an average decrease in yield of
1445 kg/ha in relation to the weed check. These was no difference between treatments
concerning plant density, plant height, height of first pod and weight of 100 seeds. All
tested treatments were selective for the soybean.
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