Predictive Model for Strawberry Bud Weevil (Coleoptera: Curculionidae) Adults in Strawberry Fields
1999; Oxford University Press; Volume: 28; Issue: 3 Linguagem: Inglês
10.1093/ee/28.3.398
ISSN1938-2936
AutoresN. J. Bostanian, Michael Binns, Joseph K. Kovach, G. Racette, G. Mailloux,
Tópico(s)Insect Pest Control Strategies
ResumoThree different sampling methods (sweep net, D-Vac, tapping into a carton container) were evaluated for Anthonomus signatus Say in strawberry fields. The results suggest that sampling with a sweep net reflects population numbers best. A predictive model for adult abundance was developed to describe and predict population build-up. The strawberry fields used in the study were in their 2nd yr of production. Overwintering adults generally begin to appear in a strawberry field ≈300 cumulatitive degree-days (DD) calculated from 1 April at temperatures above 0°C. These weevils attain maximum abundance anywhere from 500 to 670 DD. Within that interval, a treatment with cypermethrin or chlorpyriphos was effective against this pest. The summer generation attained maximum abundance anywhere from 1,250 to 1,650 DD. A treatment with chlorpyriphos at 1,679 DD reduced the summer generation of weevils and decreased clipped buds in the field the following year.
Referência(s)