Philip B. Haney, W. Joe Lewis YEAR THREE OF INSECT POPULATION DYNAMICS IN A
COTTON REFUGIA SYSTEM: PITFALL TRAP SAMPLING Proc.Beltwide Cotton Conf.(1997)1127-1129

Abstract

Transects of pitfall traps were used to monitor dens~ties of epigeal carabid beetles and spiders in a 10 ha conventional-tilled Georgia cotton field with permanent refugia stnps. Carabid and spider densities were significantly highest in the refugia strips throughout the season. Carabid and spider densities in the 12-row conon plots on either side of the refugia stnps were significantly higher than densities in cotton plots more than 12 rows from the refugia. Overall densities of both groups. even in the most distant cotton plots. remained high throughout the 1996 season, and no pre-plant incorporated or foliar insecticide treatments were applied.