Plants sensitive to clomazone in vapor phase/ Plantas indicadoras de clomazone na fase vapor

• Published in: Ciência rural Vol. 43; no. 10; p. 1817
• Main Authors: Schreiber, Fabio, de Avila, Luis Antonio, Scherner, Ananda, Moura, Diogo Da Silva, Helgueira, Diogo Balbe
• Format: Journal Article
• Language: Spanish
• Published: Universidade Federal de Santa Maria 01-10-2013
• Subjects: Pesticides; Plants
• ISSN: 0103-8478

Volatilization represents an important transport process of pesticides for the environment. The clomazone physicochemical properties indicate that molecule has the potential of volatilization. Therefore, for this study two experiments were carried with the objective of evaluating the species susceptibility: cucumber, melon, corn, sorghum and rice to different formulations of the herbicide clomazone in the vapor-phase. Glass boxes were used with the presence of clomazone formulations and plant species. The formulations used were Gamit 360 CS®, Gamit 500 EC® and Gamit Star®. As a main result it was conclude that among the species that were tested, independent of the formulation used, the lowest tolerance to clomazone herbicide in the vapor phase was sorghum, followed by corn and rice. Key words: herbicide injury, Gamit®, herbicide, volatilization. A volatilizacao representa um processo importante no deslocamento de agrotoxicos para o ambiente. As caracteristicas fisico-quimicas da molecula do clomazone indicam que este possui potencial de volatilizacao. Em vista do exposto, para a realizacao deste estudo, foram conduzidos dois experimentos com o objetivo de avaliar a suscetibilidade das especies: pepino, melao, milho, sorgo e arroz a diferentes formulacoes do herbicida clomazone na fase vapor. Para isso, foram utilizadas caixas de vidro hermeticamente fechadas, com a presenca de diferentes formulacoes de clomazone e as especies vegetais. As formulacoes utilizadas foram Gamit 360 CS®, Gamit 500 EC® e Gamit Star®. Com os resultados obtidos, foi possivel concluir que, dentre as especies avaliadas, independente da formulacao utilizada, a de menor tolerancia ao herbicida clomazone na fase vapor foi o sorgo, seguido do milho e do arroz. Palavras-chave: fitotoxicidade, Gamit®, herbicida, volatilizacao.