Relación entre densidad poblacional de la babosa Vaginulus plebeius y el daño en frijol común, Phaseolus vulgaris

Abstract

Direct nighttime observations and baited pit fall traps were used to determine population densities of active slugs, Vaginulus plebeius at various distances from a source of infestation. These observations were related to seedling damage and yield of dry beans. Each active sluglin2 Might, resulted in plant stand reduction of 20% and yield reduction of 16%. For each slug captured in the pit fall traps per night, the plant stand was reduced by 14% and yield by 11% . Tentative economic injury levels of 0.25 active slugslm2 or 0.4 slugsitrapinight were calculated. In the presence of bean seedlings, slugs move only short distances.