Abstract:
The present study was conducted at the field of Sher-e-Bangla Agricultural University, Sher-e-
Bangla Nagar, Dhaka and 45 thanas of Dhaka city during the period from November, 2015 to
May, 2016 to know the distribution, host preference, damage severity and management of mango
mealybug. Four chemical insecticides and two mechanical bands were evaluated against
mealybug at mango orchard of Sher-e-Bangla Agricultural University campus. Mango mealybug
was recorded from six thanas out of 45 thanas in Dhaka city. Jackfruit was common host at all
locations followed by mango. Comparatively higher infestation occurred on fruit of jackfruit
compared to inflorescence and branch. In case of mango, more infestation occurred on
inflorescences than branch and fruit. Severe infestation was observed on fruit for jackfruit and
inflorescence of mango in most of the locations. Carbaryl was the most effective insecticide
against mango mealybug which reduced maximum population of mango mealybug (86.70% after
7 days and 92.70% after 15 days of spray) followed by Thiamethoxam. Cotton band and
polythene band with grease were found effective for reducing the mealybug populations of
mango tree.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
ENTOMOLOGY
SEMESTER: JULY - DECEMBER, 2015
