DINAMIKA POPULASI SERANGGA HAMA TEMBAKAU CERUTU BESUKI

Abstract

Integrated Pest Management (IPM) concept
employed ecological approaches and emphasized
on the role of natural enemies as a pest
population regulation. Understanding the population
dynamics of pest as a basic to use in
constructing strategies of pest management.
This research aimed to study the population
dynamics of Besuki cigar tobacco insect pests.
Research was conducted on besuki cigar tobacco
plantation in Jember, East Java, involved two
planting seasons, i.e. May-August and September-
November 2000. Plot size was 250 m2
(containing 600 plants), located in threerepresentative-
unsprayed fields for each planting
seasons. Variables observed were all stages of
insects pest found in 20 sample plants. Result
showed that Helicoverpa spp.(H. armigera and
H. assulta), S. litura, and M. persicae were the
dominant pests of besuki cigar tobacco. In later
planting season (August-November), presence
of the pests was longer and population density
was higher than those in the earlier season.
Therefore, pest problems during the later
planting season were much heavier than that
during the earlier season. Dominance of H.
assulta during earlier seasons was replaced by
H. armigera during the later season