Abstract:
The paper presents the results of experimental studies
on the evolution of bean weevil (Acanthoscelides obtectus Say. (Coleoptera
– Bruchidae) and the duration of development stages in this species,
according to air temperature, rainfall and phenological phases of beans
varieties Magna, Star and Avans, during 6 years (1994-1999), at the
Agricultural Research Station of Podu-Iloaiei, Iaşi County. The pest
developed a field generation and 2-3 generations in storehouses, after
beans harvesting. It infested bean crops during floral button formation. Egg
laying period coincided with grain formation in pods. The bean weevil was
controlled by fumigation in storehouses and by tested and homologated
insecticides in the field.
