Biology and control of insect pests

Two bean cv. were exposed to known levels of attack of nymphs and adults of Empoasca kraemeri for 14-day periods at different growth stages. On av., Diacol-Calima and EMP 81 suffered a yield loss of 16.5 and 14.6 kg/ha, resp., per insect/leaf/14-day period. A study of the insect complex attacking fruiting structures of beans was carried out at CIAT-Palmira. It was found that Cydia fabivora and Epinotia aporema attack physiologically mature pods. The biology of the slug Vaginulus plebeius and of Zabrotes subfasciatus on beans was also studied. (CIAT)Se expusieron 2 cv. de frijol a niveles conocidos de ataque de ninfas y adultos de Empoasca kraemeri durante periodos de 14 dias en diferentes estados de desarrollo. Diacol-Calima y EMP 81 en prom. sufrieron una perdida de rendimiento de 16.5 y 14.6 kg/ha, resp., por insecto/hoja/periodo de 14 dias. Se realizo en CIAT- Palmira un estudio del complejo de insectos que atacan las estructuras de fructificacion del frijol. Se encontro que Cydia fabivora y Epinotia aporema atacan las vainas fisiologicamente maduras. Tambien se estudio la biologia de la babosa Vaginulus plebeius y del gorgojo Zabrotes subfasciatus del frijol. (RA-CIAT