Abstract:
The experiment was conducted in the field of Sher-e-Bangla Agricultural University farm,
Dhaka, Bangladesh during October 2017 to January 2018. The experiment consists of eight
treatments such as T
1
= Actara 25 WG @ 1g/Litre of water sprayed; T
= Neem oil @3ml/Litre of
water mixed with 10ml of trix liquid sprayed; T
ii
3
2
= Water based neem seed kernel extract @
5g/Litre of water sprayed; T
4
= Bioneem plus 1.0EC @ 1ml/Litre of water sprayed; T
= Ostad 10
EC @ 2ml/Litre of water sprayed; T
6
= Sevin 85 WP @ 1.2g/ Litre of water sprayed; T
=
Marshal 100EC @ 1.5ml/ Litre of water sprayed; T
=Untreated control. The experiment was
laid out in Randomized Complete Block Design
1
8
treatment. In case of leaf infestation, the lowest percent leaf
infestation was caused by whitefly
1
treatment. Beside this,
natural enemies also observed in the research field such as, the highest lady bird beetle
1
treatment and the lowest lady bird beetle
treatment during the study period . The highest
okra yield
1
1
treatment. These findings illustrated that, the Actara
25 WG
treatment was more effective for the reduction of incidence of major insect pests of
okra.
Description:
DEPARTMENT OF ENTOMOLOGY
SHER-E-BANGLA AGRICULTURAL UNIVERSITY
SHER-E-BANGLA NAGAR, DHAKA, BANGLADESH
