Abstract:
In order to study the effectiveness of some plant materials against jute yellow mite, Polyphagotarsonemus latus (Banks) on Corchorus olitorius (O-9897) experiments were conducted in the greenhouse premises and in the field of Bangladesh Jute Research Institute during the period from March to October 2016. In the greenhouse premises, the highest percent mortality 69.39%, 67.77%, 63.86%, 62.43% and 61.47% @ 1:20 were recorded from neem seed kernel extract, mehogony seed extract, pithraj seed extract, turmeric powder extract and green neem leaf extract, respectively. In field experiment, highest percent reduction of infestation over control (70.20%), lowest number of nodes per plant (52.50), highest plant height (3.10 m), and highest percentage of yield increased (38.60%) over control were observed in the plot treated with neem seed kernel extract. In conclusion, neem seed kernel extract, mahogany seed extracts, pithraj seed extract, green neem leaf extract and turmeric powder extract @ 1:20 can be used safely by the farmers as component of Integrated Pest Management (IPM) Program of jute.
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: JANUARY-JUNE, 2016
