Controle integrado de Spodoptera frugiperda (Smith & Abbott) utilizando-se o parasitóide Telenomus remus Nixon
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1999-11
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Pesquisa Agropecuária Brasileira
Resumo
Este estudo foi conduzido em 1996 e 1997 para avaliar a eficiência da liberação de Telenomus remus Nixon (cerca de 200.000 adultos/ha), sozinho ou integrado ao vírus de poliedrose nuclear de Spodoptera frugiperda (VPNSf) ou a um inseticida químico seletivo, para o controle de Spodoptera frugiperda (Smith & Abbott). Os experimentos foram conduzidos em delineamento experimental de blocos ao acaso, com seis tratamentos e quatro repetições. Foram avaliados os danos provocados pela praga às folhas (escala de 0 a 5) e o rendimento de espigas. De maneira geral, os danos provocados pela praga foram significativamente superiores nas parcelas testemunhas (nota média de 2,94). Não houve diferença significativa entre os demais tratamentos (média 1,04). De maneira semelhante, houve diferença significativa no rendimento de espiga entre testemunha (7.165 kg/ha) e demais tratamentos (9.084 kg/ha). Não houve efeito dos tratamentos no comprimento da espiga e no dano às espigas.
This study was conducted in 1996 and 1997 to evaluate the efficiency of releasing Telenomus remus Nixon (around 200,000 adults/ha) alone or integrated to Spodoptera frugiperda (Smith & Abbott) Spodoptera frugiperda nuclear polyhedrosis virus (SFNPV) or to a selective insecticide to control the insect. The experimental design was a randomized complete block with six treatments and four replications. Leaf damage caused by the pest (visual scale from 0 to 5) and the grain yield were evaluated. In general, the damage was significantly higher in the check plots (average of 2.94) than in the other treatments (average of 1.04). Similarly, there was significant difference in yield between check plots (7,165 kg/ha) and the other treatments (9,084 kg/ha). There was no difference in ear length and damage caused to the ear among treatments.
This study was conducted in 1996 and 1997 to evaluate the efficiency of releasing Telenomus remus Nixon (around 200,000 adults/ha) alone or integrated to Spodoptera frugiperda (Smith & Abbott) Spodoptera frugiperda nuclear polyhedrosis virus (SFNPV) or to a selective insecticide to control the insect. The experimental design was a randomized complete block with six treatments and four replications. Leaf damage caused by the pest (visual scale from 0 to 5) and the grain yield were evaluated. In general, the damage was significantly higher in the check plots (average of 2.94) than in the other treatments (average of 1.04). Similarly, there was significant difference in yield between check plots (7,165 kg/ha) and the other treatments (9,084 kg/ha). There was no difference in ear length and damage caused to the ear among treatments.
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Zea mays, Controle biológico, Manejo integrado de pragas, Baculovírus, Biological control, Integrated pest management, Baculovirus