Evaluation of existing and new insecticides including spirotetramat and pyridalyl to control Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) on peppers in Queensland.

Insecticides are used by growers to control Frankliniella occidentalis (western flower thrips) in Australian vegetable crops. However, limited information was available on the efficacy of some insecticides used against F. occidentalis and data on new insecticides that could be included in a resistance management program were required. The efficacy of 16 insecticides in controlling F. occidentalis was tested in four small plot trials in chillies and capsicums. Spinosad, fipronil and methamidophos were effective against adults and larvae. Spirotetramat had no efficacy against adults but was very effective against larvae. Pyridalyl was moderately effective against larvae. Methidathion showed limited effectiveness. Abamectin, amorphous silica, bifenthrin, chlorpyrifos, dimethoate, emamectin benzoate, endosulfan, imidacloprid, methomyl and insecticidal soap were not effective. Laboratory bioassays on F. occidentalis collected from the field trials showed resistance to bifenthrin but not to the other insecticides tested. The trials demonstrated that some insecticides permitted for use against F. occidentalis are not effective and identified a number of insecticides, including the new ones spirotetramat and pyridalyl, that are effective and that could be used to manage the pest within a resistance management program.

Fortalecimiento de la cadena de valor de tomate y chile verde dulce en El Salvador

Por el alto nivel de demanda y la baja participación de los productores salvadoreños, el mercado del tomate y el chile verde dulce ofrece numerosas oportunidades para su explotación en el país. La producción de estos cultivos es susceptible de gestar una mayor rentabilidad económica que los granos tradicionales, al tiempo que se abrirían ventanas de oportunidad para una diversificación productiva en beneficio de los estratos de la población rural más desfavorecida. En la actualidad, la demanda interna de tomate y chile verde dulce en El Salvador se cubre principalmente mediante la importación. Si se aumentara la productividad y la competitividad de los productores salvadoreños, además de crear oportunidades de desarrollo para el mundo rural, se brindarían espacios para revertir el déficit comercial del país en ambos cultivos.

Begomovírus de plantas de pimentão e tomate no Estado de São Paulo: ocorrência, variabilidade, identificação de biótipos de bemisia tabaci e de resistência em capsicum spp

Pós-graduação em Agronomia (Proteção de Plantas) - FCA