Seasonal history of greasy cutworm Agrotis ypsilon rott at Peshawar
Seasonal history of greasy cutworm Agrotis ypsilon rott at Peshawar
Hanif Gul and M. Ismail Chaudhry
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.
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June 1986
Vol. 36, Iss. 2
