Data/hora: 12/06/2024 08:35:20

Provedor de dados: | Revista Ciência Agronômica (RCA)
País: | Brazil
Título: | Action of rain on the efficiency of herbicides applied post-emergence in the control of Senna obtusifolia
Autores: | Souza,Guilherme Sasso Ferreira; Martins,Dagoberto; Pereira,Maria Renata Rocha; Bagatta,Murilo Villas Boas.
Data: | 2014-09-01
Ano: | 2014
Palavras-chave: | Glufosinate-ammonium Sicklepod Glyphosate Weed 2; 4-D.
Resumo: | The objective of this study was to evaluate the effect of rainfall on the effectiveness of herbicides applied post-emergence on plants of Senna obtusifolia. The experiment was carried out under green-house conditions and the experimental design was completely randomized design with four replications, with treatments in a 7x8 factorial arrangement (seven herbicides treatments and eight rain intervals). The herbicides used were five formulations of glyphosate (Roundup Original, Roundup WG, Roundup Transorb, Roundup Transorb R and Roundup Ultra) applied at a rate of to 1,080 g a.e. ha-1, glufosinate-ammonium (Finale) at 400 g a.i. ha-1 and 2,4-D (DMA 806) at 1,000 g a.e. ha-1. The rain simulation occurred at intervals of 15; 30; 60; 120; 240, 360, and 480 minutes after the herbicides application. A control treatment without herbicide application was added. Visual evaluations of control plants were taken at 7; 14; 21 and 28 days after application and at the end the dry mass of plants was determined. The rain occurrence after 15 minutes of application of glyphosate formulations Roundup Transorb, Roundup Transorb R and Roundup Ultra did not affect the control efficiency on plants of S. obtusifolia. For formulations of Roundup Original and Roundup WG and, 2,4-D it was necessary a 30 minutes period without rain for an efficient control of weed.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000300016
Editor: | Universidade Federal do Ceará
Relação: | 10.1590/S1806-66902014000300016
Formato: | text/html
Fonte: | Revista Ciência Agronômica  v.45 n.3 2014
Fonte: | info:eu-repo/semantics/openAccess