Revista Brasileira De Herbicidas 2001; 2(3): 99-106
Chemical weed control in areas of no-till cassava
DOI: 10.7824/rbh.v2i3.357
The aim of this work was to evaluate the selectivity of some pre and postemergence herbicides on cassava, as well as their efficiency to control the weeds Avena sativa, Bidens pilosa, Commelina benghalensis, Raphanus sativus and Sida rhombifolia. The field trial was carried out in no-till areas, in Araruna, northwestern Paraná State. Although some herbicides provided outstanding results either in relation to weed control or crop selectivity, when both aspects were taken into consideration, the best results were achieved with arnetryne-i-clornazone (1.50+ 1.00 kg/ha) and ametryne–diuron (0.62+0.96 kg/ha), both applied postemergence of weeds, when 5 to 10% of cassava sprouts had already emerged from the soil.
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