CEPAVE   05420
CENTRO DE ESTUDIOS PARASITOLOGICOS Y DE VECTORES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Compatibility of methoxyfenozide with Eriopis connexa, Chrysoperla externa, Trissolcus basalis and Trichopoda giacomellii
Autor/es:
SCHNEIDER, MARCELA INES; PINEDA, SAMUEL; FRANCESENA, NATALIA; TREUQUE, ADRIANA; MARTINEZ, ANA MABEL
Lugar:
Ghent-Belgium
Reunión:
Simposio; 61st International Symposium on Crop Protection; 2009
Institución organizadora:
Faculty of Bioscience Engineering, Ghent University, Belgium
Resumen:
In Argentina, transgenic soybean resistant to glyphosate (RR) has expanded in recent decades. This resulted in a significant increase in the use of broad-spectrum insecticides together with the herbicide glyphosate. However, the Integrated Pest Management (IPM) paradigm claims for integrating natural enemies of pests, selective pesticides, and other cultural techniques. Broad-spectrum pesticides are toxic for most natural enemies. Methoxyfenozide is a Molting Accelerating Compound (MAC) belonging to the Insect Growth Regulator insecticides (IGR’s). Commercial Inteprid® has been registered in Argentina for the control of soybean pests and represents one alternative to broad-spectrum insecticides. The objective of this work was to evaluate de compatibility of this biorational insecticide with four relevant natural enemies associated to soybean pests (Eriopis connexa, Chrysoperla externa, Trissolcus basalis and Trichopoda giacomellii). Commercial compound and the maximum registered concentrations for their field use were employed: Interprid® (24% methoxyfenozide, 144 mg/L a.i., Dow Agrosciences Argentina S.A.). The bioassays were carried out in the laboratory under controlled conditions: 25±0.5 °C of temperature, 75±5% RH and 16:8 L:D of photoperiod. Harmful effects of methoxyfenozide on life parameters of the four natural enemies were evaluated by ingestion, dipping and residual exposure ways. The endpoints chosen for the evaluation were: mortality, development rate, longevity, parasitism, predation rate, fecundity and fertility. Methoxyfenozide results harmless for the four natural enemies studied because their life parameters were similar to those observed in the controls. This work confirms once again the compatibility of methoxyfenozide with natural enemies of the agricultural pests.