Abstract:
Thirty guava growers from Nesarabad upazila were purposively selected for
conducting the survey on the present management practices adapted by growers
against guava insect pests in major guava growing area of Bangladesh. Total of 30
guava growers were interviewed and made a clear observation during the period
from 23 November 2014 to 14 May 2015. A well structured interview schedule
was developed based on objectives of the study for collecting information. Survey
findings revealed that white fly, fruit fly maggot, aphid and mealybug were the
major insect pests in guava. In case of management practices, the highest plant
infestation was recorded from GP1 (63.33%), whereas the lowest plant infestation
was observed from GP5 and GP4 (3.33%). The highest fruit infestation was
recorded from GP1 (56.67%), whereas the lowest fruit infestation was observed
from GP5 (3.33%). The highest benefit cost ratio (BCR) was recorded from GP5
(3.08), while the lowest BCR was observed from GP1 (2.37). For using different
combination of insecticide, the highest plant infestation was recorded from IC1
(50.00%), whereas the lowest from IC5 (3.33%). The highest fruit infestation was
recorded from IC1 (43.33%), whereas the lowest fruit infestation was observed
from IC5 (3.33%). The highest BCR was recorded from IC5 (3.42), whereas the
lowest BCR was observed from IC1 (2.50). Application of combined/integrated
control tactics/measures were more effective for guava cultivation compared to
single control measure.
Description:
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
ENTOMOLOGY
SEMESTER: JULY-DECEMBER, 2014
