The objective of the present work was to evaluate the effect of the entomopathogen fungi Baeuveria bassiana and Metarhizium anisioplae of the Prodiplosis longifila pupas, in order to reduce the adult population of this insect. The treatments consisted on the application of two different propagel concentrations (mycel and conidia) of each entomopathogen. One of these concentration was 1x106 propagels/ml (obtained from the total amount of conidia collected of 25 kg of rice colonized by the entomopathogen); and the other one, was 1x107 propagels/ml (obtained from the total amount of conidia collected of 40 kg of rice colonized by the entomopathogen). As a check a non application treatment was considered. The applications were trough the irrigation system and started 15 days after the end of harvest and were repeated each five days during a month, coincident with the period of most falls of ...

The objective of the present work was to evaluate the effect of the entomopathogen fungi Baeuveria bassiana and Metarhizium anisioplae of the Prodiplosis longifila pupas, in order to reduce the adult population of this insect. The treatments consisted on the application of two different propagel concentrations (mycel and conidia) of each entomopathogen. One of these concentration was 1x106 propagels/ml (obtained from the total amount of conidia collected of 25 kg of rice colonized by the entomopathogen); and the other one, was 1x107 propagels/ml (obtained from the total amount of conidia collected of 40 kg of rice colonized by the entomopathogen). As a check a non application treatment was considered. The applications were trough the irrigation system and started 15 days after the end of harvest and were repeated each five days during a month, coincident with the period of most falls of ...

The objective of present study was symptomatic and molecular characterization of the virus that infects Carica papaya L. in areas of northern Peru. To do this, of different fields were collected leaves of C. papaya with mosaic symptoms, chlorosis and distortion the leaf. Sap of these leaves was inoculated mechanically onto virus-free plants of C. papaya, Chenopodium murale, Ch. amaranticolor, Ch. quinoa, Cucumis melo, C. sativus and Cucurbita pepo; which they were kept at room temperature for 45 days, after which young leaves in of C. papaya, mosaic, distortion and reduction of the leaf blade was observed; in the species C. melo, C. sativus and Cucurbita pepo systemic chlorosis. Ch. murale, Ch. amaranticolor and Ch. quinoa they no showed symptoms evident. The plants infected were analyzed by serological technique NCM-ELISA and RT-PCR proving that the virus that is infecting the plantatio...

La piña es una de las frutas más importantes por su demanda en el mercado mundial. En La Libertad, al norte del Perú, la variedad local ´Roja Trujillana´ es muy importante en el sostenimiento de las familias rurales de la provincia de Poroto. Sin embargo, en los últimos años las plantas y la cáscara del fruto han desarrollado un color amarillo atípico, especialmente en plantaciones mayores a tres años. Esta situación, ha preocupado a los agricultores por usar semillas provenientes de tales plantas como material de propagación. Por tal razón, se evaluó el efecto de semillas provenientes de plantaciones con diferente edad en el crecimiento, el rendimiento y en la calidad del fruto de ‘Roja Trujillana’ mediante el diseño de bloques completos randomizados. Las semillas vegetativas utilizadas fueron hijuelos basales del fruto colectados de plantaciones de 18, 28, 38, 48 y 5...

The objective of present study was symptomatic and molecular characterization of the virus that infects Carica papaya L. in areas of northern Peru. To do this, of different fields were collected leaves of C. papaya with mosaic symptoms, chlorosis and distortion the leaf. Sap of these leaves was inoculated mechanically onto virus-free plants of C. papaya, Chenopodium murale, Ch. amaranticolor, Ch. quinoa, Cucumis melo, C. sativus and Cucurbita pepo; which they were kept at room temperature for 45 days, after which young leaves in of C. papaya, mosaic, distortion and reduction of the leaf blade was observed; in the species C. melo, C. sativus and Cucurbita pepo systemic chlorosis. Ch. murale, Ch. amaranticolor and Ch. quinoa they no showed symptoms evident. The plants infected were analyzed by serological technique NCM-ELISA and RT-PCR proving that the virus that is infecting the plantatio...

La piña es una de las frutas más importantes por su demanda en el mercado mundial. En La Libertad, al norte del Perú, la variedad local ´Roja Trujillana´ es muy importante en el sostenimiento de las familias rurales de la provincia de Poroto. Sin embargo, en los últimos años las plantas y la cáscara del fruto han desarrollado un color amarillo atípico, especialmente en plantaciones mayores a tres años. Esta situación, ha preocupado a los agricultores por usar semillas provenientes de tales plantas como material de propagación. Por tal razón, se evaluó el efecto de semillas provenientes de plantaciones con diferente edad en el crecimiento, el rendimiento y en la calidad del fruto de ‘Roja Trujillana’ mediante el diseño de bloques completos randomizados. Las semillas vegetativas utilizadas fueron hijuelos basales del fruto colectados de plantaciones de 18, 28, 38, 48 y 5...