SciELO - Scientific Electronic Library Online

 
vol.19 número1Uso de esterco bovino e húmus de minhoca na produção de repolho híbridoProdução de raízes de cenoura cultivadas com húmus de minhoca e adubo mineral índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Horticultura Brasileira

versão impressa ISSN 0102-0536versão On-line ISSN 1806-9991

Resumo

MEDEIROS, Francisco A.S.B.; BLEICHER, Ervino  e  MENEZES, Josivan B.. Effect of betacyfluthrin, dimethoato and methomyl applied in mixtures with mineral oil and neutral detergent in the control efficiency of whitefly in melon plants. Hortic. Bras. [online]. 2001, vol.19, n.1, pp.74-76. ISSN 0102-0536.  http://dx.doi.org/10.1590/S0102-05362001000100015.

Two different experiments were developed to evaluate the mineral oil (experiment 1) and neutral detergent (experiment 2) effect in the control efficiency of the whitefly (Bemisia tabaci RACE B - Hemiptera-Homoptera: Aleyrodidae) by betacyfluthrin, dimethoate and methomyl in melon plants (Cucurbitaceae, Cucumis melo L. - yellow variety, using the hybrid AF 646). The experimental design applied to each experiment, was of randomized blocks with seven treatments and four replications Each experimental plot had 60 m². It was concluded that the mineral oil and neutral detergent associated to betacyfluthrin and dimethoate insecticides reduced the whiteflys nymphs population, increasing the efficiency of these insecticides, although this efficiency could be considered low (less than 70%). Methomyl presented the lowest efficiency in controlling the insect, specially in experiment 2, even when applied with mineral oil or the neutral detergent. Mineral oil and neutral detergent at the concentration of 0.5% did not cause toxic reaction in the melon plants. In experiment 1 the treatment combining mineral oil and betacyfluthrin was the most efficient in controlling the insects (control efficiency of 68.57%). In experiment 2, using neutral detergent, the most efficient treatment was dimethoate insecticide associated with the neutral detergent, (control efficiency of 64.09%).

Palavras-chave : Cucumis melo L.; Bemisia tabaci RACE B; fitossanitary control.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons