Listar Agronomía Costarricense por autor "1832f839-5f59-4f41-a532-eea2bc48d3f9"
Mostrando ítems 1-6 de 6
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Control of Dysmicoccus brevipes (Hemiptera: Pseudococcidae) on the pineapple fruit, San Carlos, Costa Rica.
Vindas, Alexandra Miranda; Blanco Metzler, Helga (2013-07-03)The study evaluated 6 products for Dysmicoccus brevipes control in pineapple production (Ananas comosus). The laboratory test was conducted in the BioEco Natural Company S.A., biocontrol laboratory in Aguas Zarcas, San ... -
Granular base formulation for the incorporation of biologically-effecting active ingredients for the control of simbiotic fungus grown by leaf cutting ants, Atta spp
Herrera, Ena Edith; Sánchez, Vera; Blanco Metzler, Helga (2013-12-11)Leaf cutting ants (Atta spp.) can destroy complete plantations of economically important crops in Tropical and Subtropical America, by cutting plant tissues and transporting them to underground nests where they grow a ... -
Manejo de Cholus pilicauda (Coleoptera: Curculionidae) en flores de ginger (Alpinia purpurata)
Blanco Metzler, Helga (2006-08-11)Se estudió el efecto de 3 condiciones de luz (completa-548,63 W m-2, media luz-280,02 W m-2, sombra-76,38 W m-2), el uso de repelentes (ajo más chile, neem y pichichío) y el uso de bolsas de exclusión, en el daño de Cholus ... -
Modificación de olfatómetros de cuatro brazos para experimentación en broca del café, Hypothenemus hampei Ferrari (Coleoptera: Curculionidae)
Pacheco, Arturo; Blanco Metzler, Helga; Mora Castro, Rebeca (2013-05-28)Modification of fourarm olfactometers to be used with the coffee borer Hypothenemus hampei Ferrari (Coleoptera: Curculionidae). The coffee berry borer, Hypothenemus hampei is considered to be a major pest in coffee producing ... -
The effect of predators on the abundance of the Macadamia Nutborer (Ecdytolopha torticornis)
Blanco Metzler, Helga; Watt, Allan D.; Cosens, Derek (2006-08-11)Predators play a fundamental role in integrated pest management programmes, yet are often underutilized because of a lack of information about their effect on pest populations. In this study, the mortality of larvae and ... -
The effect of quality of food source on macadamia nut damage by Gymnandrosoma aurantianum (Lepidoptera: Tortricidae)
Blanco Metzler, Helga; Watt, Allan D.; Cosens, Derek (2013-12-11)The effect of nitrogen content, the secondary compounds (tannin and proanthocyanidin) content, the dry matter content of 4 clones, and the different developmental stages of macadamia nuts, on the abundance of Gymnandrosoma ...