DefinePK

Abstract

ABSTRACT The seasonal history studies revealed that moth emergence starts in the end of February or early March reaching the maximum of 84 moths in the week of March. The moth catch went down to zero in the end of March and again rose to a peak of 42 in the 2nd week of April. It once again touched the base and rose again to another peak of 74 months in the 2nd week of May. The egg population was maximum a week after the peak emergence of moths. The larval population was found maximum one week after the maximum egg population. The pupal population collected from field showed three population peaks, in the end of February, in the 2nd week of April and 2nd week of May. Observations recorded on the aestivation/hibernation revealed that cutworm larvae and pupae were found from cages provided with eggs in the month of May. No stage of cutworm was recovered from cages provided with larvae or pupae of cutworms before the hot summer started. It indicates that the larvae and pupae of cutworm did not survive in hot dry weather of June where as the eggs aestivated successfully.