MANAGEMENT
OF OKRA SHOOT AND FRUIT BORER USING BOTANICAL AND CHEMICAL INSECTICIDES EVALUATED
BY SOME VEGETATIVE AND REPRODUCTIVE ATTRIBUTES
Jahangir Hasan,
M. Razzab Ali, Tahmina Akter and S. M. Mizanur Rahman
Abstract
The
experiment was conducted at the field in Rampal, Munshiganj, Bangladesh, during
the period from February’ 2014 to June’ 2014 to study ecofriendly management
against okra shoot and fruit borer, Earias vittella Fab. by using botanicals and chemicals (T1
= Neem leaf extract @ 200g L-1 of water sprayed at 7 days interval;
T2 = Neem seed karnel extract @ 200g L-1 of water at
7days interval; T3 = Neem oil @ 4 ml L-1 of water mixed
with 10ml of trix liquid sprayed at 7 days interval; T4 = Dholkalmi
leaf extract @ 200g L-1 of water at 7 days interval; T5 =
Mahogany leaf extract @ 200g L-1
of water at 7 days interval; T6 = Suntap 50SP @ 1.5ml L-1
of water at 7 days interval; T7 = Untreated control). Results showed
that the lowest % of shoot, plant and flower infestation (3.50, 1.31 and 0.00
respectively) were recorded in T6 whereas, the highest in T7 (23.93,
20.40 and 21.62%). The highest percent fruit infestation both in number and
weight (9.73and 7.12%) were recorded in untreated control plots but
the values were the lowest in T6 (0 and 0, respectively). T3
and T5 reduced fruit infestation by 11.72% by number and 28.51% by
weight respectively over the control.
Key
Words:
Okra shoot and fruit borer, Earias
vittella and botanicals and insecticides.
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