Efeito da solarização do solo na sobrevivência de Phytophthora capsici em cultivo protegido
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Data
2002-02-01
Autores
MARQUE, JANAÍNA M. [UNESP]
SOUZA, NILTON L. [UNESP]
CUTOLO FILHO, ANIELLO A. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Fitopatologia
Resumo
Foram realizados três experimentos em Botucatu, estado de São Paulo (22º51'S e 48º26'W), em túnel plástico completamente fechado para verificar a eficiência da solarização do solo na sobrevivência de Phytophthora capsici, agente causal da murchadeira do pimentão (Capsicum annuum). Os experimentos, com duração de 35 dias cada, foram instalados nos períodos de fevereiro a março, abril a maio e junho a julho do ano de 1998. O patógeno, cultivado em grãos de trigo, contidos em bolsas de tecido sintético, foi colocado a 5, 15 e 25 cm de profundidade em duas parcelas idênticas de 33,25 m², sendo uma coberta com plástico de polietileno transparente de 75 mim (solarizada) e a outra sem cobertura (testemunha). Constatou-se que a solarização, aplicada em ambiente protegido, foi eficiente nesses experimentos no controle de P. capsici artificialmente colocada no solo nos três períodos testados, variando apenas o tempo de cobertura do solo de acordo com a época do ano.
Three assays were carried out in Botucatu, state of São Paulo (22º51'S and 48º26'W), in a closed plastic greenhouse to verify the efficiency of the soil solarization method on survival of Phytophthora capsici, the causal agent of blight in peppers (Capsicum annuum). The assays were performed over three different 35-day periods in the summer, autumn and winter of 1998. The pathogen, cultivated on wheat seeds, was put into nylon bags and buried at depths of 5, 15 and 25 cm in two identical plots of 33,25 m² each; one of them was covered with transparent polyethylene of 75 mum (solarized) while the control was left other without a cover. It was concluded that the solarization method, in the plastic greenhouse, was efficient in these assays for controlling P. capsici put in soil artificially in all three periods, length of time the soil, must be covered, according to the season.
Three assays were carried out in Botucatu, state of São Paulo (22º51'S and 48º26'W), in a closed plastic greenhouse to verify the efficiency of the soil solarization method on survival of Phytophthora capsici, the causal agent of blight in peppers (Capsicum annuum). The assays were performed over three different 35-day periods in the summer, autumn and winter of 1998. The pathogen, cultivated on wheat seeds, was put into nylon bags and buried at depths of 5, 15 and 25 cm in two identical plots of 33,25 m² each; one of them was covered with transparent polyethylene of 75 mum (solarized) while the control was left other without a cover. It was concluded that the solarization method, in the plastic greenhouse, was efficient in these assays for controlling P. capsici put in soil artificially in all three periods, length of time the soil, must be covered, according to the season.
Descrição
Palavras-chave
Capsicum annuum, murcha do pimentão, controle, casa de vegetação
Como citar
Fitopatologia Brasileira. Sociedade Brasileira de Fitopatologia, v. 27, n. 1, p. 42-47, 2002.