info:eu-repo/semantics/article
Relative susceptibility of Crotalaria spp. to attack by Etiella zinckenella in Puerto Rico
Susceptibilidad de Crotalaria spp. a Etiella zinckenella en Puerto Rico
Registro en:
10.46429/jaupr.v72i1.6844
Institución
Resumen
Four Crotalaria species were found attacked by the lima bean pod borer Etiella zinckenella (Treit.) in Puerto Rico: C. pallida, C. anagyroides, C. zanzibarica and C. incana. Non-susceptible species were C. retusa, C. stipularia and C. lanceolata. Early literature observations on the effect of soil characteristics (pH, soil penetrability, and organic matter) on attack rates of this borer to C. pallida could not be confirmed on the basis of field observations. Only plant patch size seemed to be positively correlated with attack rates. Female oviposition patterns are discussed. Oviposition on C. pallida field collected pods was restricted to green pods larger than 3.2 cm. No eggs were found on senescent pods. Un reconocimiento de especies de Crotalaria determinó la susceptibilidad de cuatro especies al ataque del barrenador Etiella zinckenella (Treit.): C. pallida, C. anagyroides, C. zanzibarica y C. incana. No se hallaron atacadas las especies C. retusa, C. stipularia o C. lanceolata. No se logró corroborar algunas observaciones informadas en la bibliografía sobre el efecto de los suelos sobre la intensidad del ataque del barrenador a C. pallida. Solo la densidad de plantas resultó positivamente correlacionada con la severidad del ataque. Se observó que la postura de huevos está restringida a vainas verdes de Crotalaria pallida de más de 3.2 cm. No se hallaron huevos en vainas senescentes.