Eficácia do herbicida flazasulfuron no controle de plantas daninhas em cana-de-açúcar e seus efeitos no crescimento e produtividade da cultura

Revista Brasileira de Herbicidas

Fernando Tadeu Carvalho¹  Walter Galbiatti Júnior¹  Maurício Alessandro Cavazzana¹ 

关键词: Cyperus rotundus;    interferência;    controle químico;    seletividade;   

DOI  :  

学科分类：农业科学（综合）

来源: Sociedade Brasileira da Ciencia das Plantas Daninhas (S B C P D) / Brazilian Society of Herb Science

【 摘 要 】

The objective this study was to evaluate the tolerance of the sugar-cane to the flazasulfuron and the herbicide efficiency on the Cyperus rotundus control. The experiment was carried on a sandy soil texture, at the Usina Destivale, at Araçatuba, SP. The used variety was RB 72-454. A randomized block design was used, with 12 treatments and 4 repetitions. The herbicides were applied in post-emergency of the crop and weeds, at 20 and 45 days after the plantation. The seletivity to the herbicides was evaluated to the sugar-cane and the efficiency in the control of the weeds by visual evaluations and number of tubers. It was also evaluated the effect of the treatments on the crop growth and yield. It was concluded that the flazasulfuron, at 100, 125, 150, 37.5+37.5, 50+50, 62.5+62.5 and 75+75 g/ha, was selective to the crop of the sugar-cane and efficient in controling of C. rotundus, providing average reduction of 80% in the number of viable tubers of purple nutsedge. The yield of the sugar-cane was of 81.2 t/ha against 55.6 t/ha of the control without weeding. At 50 and 75 g/ha, the herbicide was not very efficient. The herbicide 2,4-D was not very efficient in the control of the purple nutsedge and MSMA was efficient until 45 days after the first application, with 85% of control.

【 授权许可】

Unknown