SciELO - Scientific Electronic Library Online

vol.25 issue4Alternative host weeds of Colletotrichum guaranicola in guarana crops in the State AmazonasTolerance of rice (Oryza sativa) cultivars to nicosulfuron and to the formulated mixture imazethapyr + imazapic author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Planta Daninha

Print version ISSN 0100-8358On-line version ISSN 1806-9681


FONTANA, L.C. et al. Control of red rice (Oryza sp.) with herbicide nicosulfuron or imazethapyr + imazapic formulate mixture. Planta daninha [online]. 2007, vol.25, n.4, pp.783-790. ISSN 0100-8358.

Red rice control efficacy using nicosulfuron or a formulated mixture of imazethapyr + imazapic was evaluated. A greenhouse experiment was carried out at Faculdade de Agronomia Eliseu Maciel (UFPel) in Capão do Leão (RS), during the 2005/2006 growing season, in a randomized complete block design and four replications. Treatments were arranged in a 2 x 7 factorial, with factor A being the herbicides and factor B the herbicide rates (0, 0.25, 0.50, 0.75, 1.0, 1.25 and 1.50 L ha-1). The herbicides were applied over red rice plants at the V4 development stage. Control, plant height and aerial dry mass were evaluated. There was a significant interaction for the variables between the factors studied. Increased herbicide rates resulted in increasing control responses and decreased plant height and dry biomass. Results showed that red rice is efficiently controlled by the herbicides. Control efficacy is not restricted to the formulated mixture of imazethapyr+imazapic, also occurring with nicosulfuron starting from 40 g ha-1.

Keywords : irrigated; rice; ALS-inhibitor herbicide; imidazolinone; sulfonylurea.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License