Herbicide sulfentrazone in the control of weed plants in initial posts-emergency of sugarcane crop

Fernando José Teixeira Simplício, Clara Degli Esposti, Carlos Roberto de Toffoli, Devair Gonçalves da Silva, Marcos Antônio Kuva

Abstract


Weeds negatively affect sugarcane yield, so the use of tools, such as chemical management, is essential to ensure high yields of the crop. The objective of this study was to evaluate doses of the herbicide sulfentrazone, apllied in initial post-emergence, in the control of weeds Panicum maximum, Amaranthus viridis, Digitaria horizontalis, Cyperus rotundus and Ipomoea purpurea. The experiment was carried out in a greenhouse, in a completely randomized block, with four replications. The treatments consisted of the application of sulfentrazone in increasing doses equivalent to 500, 600, 700 e 800 g i.a. ha-1 and a control without application on the the weeds, when they were between the second and third pair of true leaves. At 3, 5, 7, 14, 21 and 28 days after application (DAA), the control was visually evaluated, and at 28 DAA the number of viable and non-viable tubers for the Cyperus rotundus species was determined. All treatments, independent of the dose, obtained results of species control percentage (above 85%), from the third day after application (DAA), for all of weeds.


Keywords


Chemical control, interference, Saccharum spp.

References


ASOCIATION LATINOAMERICANA DE MALEZAS. Recomendaciones sobre unificación de los sistemas de evaluación em ensayos de control de malezas. ALAM, Bogotá, v.1, 1974.p. 35-38

CÂMARA, G.M.S., AREVALO, R.A., ORSI JR, F., RUIZ, S.T., FURLAN, N.M. Eficiência agronômica do herbicida sulfentrazone no controle de tiririca (Cyperus rotundus) em áreas de soqueira. In: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, 20, 1995. Resumos....Florianópolis: SBCPD. 1995.p.434-435.

CONAB , 2016. Acomp. safra bras. cana, v. 3 - Safra 2016/17, n. 1 - Primeiro levantamento, abril de 2016. Companhia Nacional de Abastecimento. Brasília: Conab, 2016. Cana-de-açúcar. Disponívelem: Acesso em: 25 de março 2017.

LORENZI, H. Manual de identificação e controle de plantas daninhas. 7 ed. São Paulo: Instituto Plantarum. 2014.

MASCARENHAS, M.T.T. et al. Eficácia do halosulfuron no controle de tiririca (Cyperus rotundus) na cana-de-açúcar. Planta daninha, v.13, n.2, p.69-80, 1995.

RODRIGUES, B.N., ALMEIDA, F.S. Guia de herbicidas, 3 ed., Londrina, Ed. Dos Autores, 1995.675p.

SOARES,M.B.B .Fitossociologia de plantas daninhas sob diferentes sistemas de manejo de solo em áreas de reforma de cana-crua. RevistaAgro@ambiente, v5, n.3,p.173-181, set-dez,2011.

SILVA, P.V., et al. Controle em pós-emergência de plantas daninhas por herbicidas utilizados na cultura da cana-de-açúcar. Revista Caatinga, Mossoró, v. 28, n. 4, p.21-32, out.-dez., 2015.


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