Eficácia de óleos minerais aplicados como adjuvantes auxiliando na selitividade de herbicidas na cultura de cana-de-açúcar

Detalhes bibliográficos
Ano de defesa: 2015
Autor(a) principal: Santos, Eigon Costa dos [UNESP]
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Estadual Paulista (Unesp)
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: http://hdl.handle.net/11449/126508
http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/12-08-2015/000844553.pdf
Resumo: Adjuvants are substances added to the formulation of crop protection products in order to improve the effectiveness of these products. The aim of this study was to evaluate the effectiveness of mineral oils as herbicide adjuvants used in the culture of cane sugar. The work was divided into three experiments focuses on weed control in pre- and post-emergence and eradication of cane sugar from the stump. The experimental design used in the experiments was randomized blocks with twenty treatments and four replications for each experiment. Applications of the treatments were performed with a knapsack sprayer, with constant pressure (maintained CO2) of 40 lb / in2, with application volume of 200 L / ha. It was observed that in the work of Weed Control in Pre-Emergency, treatments with adjuvants were higher than treatments without adjuvants in weed control that occurred in the experiment: Ipomoea nil (string-of- viola), Commelina benghalensis ( spiderwort) and Panicum maximum (guinea grass) and were selective for the cultivation of cane sugar. In the work of Weed Control in Post-Emergency, treatments with adjuvants were higher than treatments without adjuvants in the control of weeds I. nil, C. benghalensis, P. maximum and Bidens pilosa (beggartick) and were also highly selective culture, and in the question invisible phytotoxicity detected by the fluorometer apparatus, the Oppa-BR-EC adjuvant was the most selective culture at both doses of Krismat herbicide. At work Eradication of ratoon cane sugar, the addition of adjuvants to the herbicide spray, and improve the effectiveness of treatments, accelerated the death of plants; herbicide at the lowest dose (4.5 L glyphosato cp / ha) treatment resulted in the highest drying rate was with Oppa-US-EC adjuvant (1.00% v / v) and higher dose (6, 0 l / ha) all treatments were highly effective adjuvants and higher than the control without adjuvant