injúria potencial de herbicidas de solo ao girassol: iii - imazaquin e imazethapyr potential sunflower injury by soil applied herbicides: iii - imazaquin and imazethapyr

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ID: 228512
1994
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Abstract
Conduziu-se um ensaio em campo na Estação Experimental Agronômica da Universidade Federal do Rio Grande do Sul, em Eldorado do Sul, RS, em 1989/90. O objetivo do trabalho foi determinar o efeito residual potencial dos herbicidas imazaquin e imazethapyr, aplicados em três doses à superfície do solo (PRE) ou incorporados no mesmo (PPI), na cultura de girassol. Num sistema de rotação soja-girassol, o efeito residual potencial de imazaquin foi mais acentuado que o de imazethapyr. A atividade herbicida de imazaquin e imazethapyr não foi dependente do método de aplicação. Imazaquin e imazethapyr, nas maiores doses, promoveram danos iniciais acentuados. As plantas de girassol recuperaram-se dos sintomas de intoxicação de imazethapyr, os quais diminuíram com o decorrer do tempo, mas não se recuperaram das injúrias causadas pelas maiores doses de imazaquin.
A field experiment was carried-out during 1989/90 at the Eldorado do Sul Experimental Station of Federal University of "Rio Grande do Sul", Brazil, with the objective of evaluating potential injury to sunflower by imazaquin and imazethapyr applied at three different dosages in pre-emergence (PRE) or preplant incorporated (PPI). In a soybeansunflower rotation, imazaquin presents greater potential injury to sunflower than imazethapyr. Imazaquin and imaze thapyr activities were not dependent on application method. It occurred severe herbicide injury when sunflower was assessed early in the season. Plant height assessed late in the season indicated that sunflower recovered from imazethapyr injury, but not from imazaquin injury.
Reference Key
fleck1994plantainjria Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Nilson G. Fleck;Ribas A. Vidal
Journal anti-cancer agents in medicinal chemistry
Year 1994
DOI
10.1590/S0100-83581994000100006
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581994000100006
Keywords
helianthus annuus crop rotation imidazolinonesbiology (general)botany

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