Abstract:
The study was conducted in the research field of Sher-e-Bangla Agricultural University,
Dhaka in order to study the major insect pests of maize and their management. There were
seven treatments and three replications used in a randomized complete block design (RCBD).
The treatments were T
1
(Success @ 0.5 ml/L of water at 7 days interval); T
(Matrine @ 1
ml/L of water at 7 days interval); T
3
(Virtaco @ 0.2 g/L of water at 7 days interval); T
(Neem
oil @ 5 ml/L of water with detergent at 7 days interval); T
(Emamectin Benzoate @ 1 ml/L
of water at 7 days interval); T
6
viii
5
(Seed treatment with Fortenza+Sunfezin @ 0.2 g/L of water at
7 days interval); and T
7
(untreated control). Treatment T
showed the lowest fall armyworm
infestation 0.11 larvae per plot during 3 days after spray, 0.17 larvae per plot during 7 days
after spray. Similarly, Treatment T
6
6
showed the lowest aphid infestation 14.54 aphids per piot
during 3 days after spray, 9.06 aphids per plot during 7 days after spray. Lowest plant
infestation (1.91% per plot) of stem borer was obatained from treatment T
. in case of % dead
heart, Fortenza+Sunfezin showed the lowest infestation i.e. 1.60%. The lowest number of
insects was observed in treatment T
6
6
and produced the maximum yield. Seed treatment with
Fortenza+Sunfezin was the most effective insecticide against pest complex of maize.
Description:
A Thesis
Submitted to the Department of Entomology
Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
ENTOMOLOGY
