Abstract:
An experiment was conducted in the experimental field of Sher-e-Bangla Agricultural
University, Dhaka, Bangladesh during the period from November 2020 to March 2021 to
study the incidence and ecofriendly management of Capsicum fruit borer. The
experiment consists of control measures and plant extract. The experiment was laid out in
Randomized Complete Block Design replicated with four times. For this study having six
treatment, viz: Treatment T
1
: Field Sanitation + Netting; T
: Field sanitation + rice straw
mulch; T
3:
2
Field sanitation + Spinosad (Tracer) @ 0.5ml/L of water at the 7 days
intervals; T
4:
Black polythene + leaf extract of neem at the 7 days intervals; T
: Field
sanitation + Neem oil @ 2.0 ml/L of water with detergent at the 7 days intervals; T
:
control were included in this study. The results showed that the presence of capsicum
fruit borers (Helicoverpa armigera Hubner) at various fruiting stages destroys the
capsicum fruit contents and is one of the major constraints to increasing bell pepper
yields. Thus, for the management of capsicum fruit borer, it was discovered that
treatment T
(Field sanitation + Spinosad at 7-day intervals) was the most effective
treatment for reducing insect pest infestation at all growing stages. While the lowest
performance was observed in T
3
6
(Control) was followed by T
(Field Sanitation +
Netting) treatment. The highest total yield hectare
-1
was found from T
1
(23.43 ton), while
the lowest yield hectare
-1
was found from T
6
2
(19.54 ton) treatment. The yield of capsicum
was highly significant (p=0.05), very strong and negatively correlated with infested fruit
yield (t/ha) i.e., the total yield of capsicum increased with the infested fruit yield (t/ha)
decreased. From the study, it may be concluded that treatment T
which comprised with
the Field sanitation + Spinosad at the 7 days intervals used as a best treatment against
Capsicum fruit borer which was followed by spraying of T
5
3
treatment.
Description:
A Thesis
Submitted to Department of Entomology,
Faculty of Agriculture.
Sher-e-Bangla Agricultural University,
Dhaka-
In partial fulfillment of the requirements for the degree of
MASTERS OF SCIENCE (MS)
IN
ENTOMOLOGY
