EFEITOS da SIMULAÇÃO DE DERIVA DE CLOMAZONE em PLANTAS DE LARANJEIRA 'HAMLIN'
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Data
2001-08-01
Autores
TIMOSSI, PAULO CÉSAR [UNESP]
ALVES, PEDRO LUÍS da C.A.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Fruticultura
Resumo
Em trabalho realizado em 1998, no município de Taiúva-SP, objetivou-se avaliar o efeito da simulação da deriva de doses crescentes, até atingir a recomendada comercialmente, de clomazone, em duas formulações, e de clomazone em mistura com ametryne, em laranjeira-'Hamlin' com frutos com 2 a 4 cm de diâmetro. O delineamento experimental utilizado foi o de blocos casualizados, com 15 tratamentos, em 3 repetições. As avaliações basearam-se em possíveis alterações morfofisiológicas das plantas, com determinações do teor de clorofila total nas folhas, porcentagem de abortamento de frutos, além de análise tecnológica dos frutos. Concluiu-se que a dose comercial de clomazone isolado e em mistura com ametryne a 50 e 100% da dose resultou na formação de manchas cloróticas e/ou necróticas na casca do fruto e causou mortalidade de ramos que se encontravam em crescimento vegetativo, não acarretando qualquer alteração qualitativa do suco.
The experiment aimed to evaluate the clomazone (alone or in mixture with atrazine) drift off simulation, on quantitative and qualitative aspects of the sweet orange production when occurred at developmental plant stages of fruit growing (fruits of 2 until 4 cm diameter). Crescents doses, until commercial rate, of clomazone, in two formulations, and in mixture with ametryne were tested. The experimental design was completely randomized blocks, with 15 treatments and 3 replications. It was evaluate: fruit morphological feature, fruits abortion and leaf chlorophyll content. Clomazone alone at of commercial rate and in mixture with ametryne at 50 and 100% promoted clorotic and/or necrotic spots in the fruit skin and promoted the death of new sprouting stems. There were no qualitative effects on juice.
The experiment aimed to evaluate the clomazone (alone or in mixture with atrazine) drift off simulation, on quantitative and qualitative aspects of the sweet orange production when occurred at developmental plant stages of fruit growing (fruits of 2 until 4 cm diameter). Crescents doses, until commercial rate, of clomazone, in two formulations, and in mixture with ametryne were tested. The experimental design was completely randomized blocks, with 15 treatments and 3 replications. It was evaluate: fruit morphological feature, fruits abortion and leaf chlorophyll content. Clomazone alone at of commercial rate and in mixture with ametryne at 50 and 100% promoted clorotic and/or necrotic spots in the fruit skin and promoted the death of new sprouting stems. There were no qualitative effects on juice.
Descrição
Palavras-chave
herbicida, deriva, fitointoxicação, herbicides, drift, phytointoxication
Como citar
Revista Brasileira de Fruticultura. Sociedade Brasileira de Fruticultura, v. 23, n. 2, p. 310-314, 2001.