Abstract:
A field study was carried out in the farm of Sher-e-Bangla Agricultural University,
during March to June, 2009 to investigate the major insect pests of cowpea (Vigna
unguiculata) and to explore the suitable practice(s) for their management. Among
the treated plots, the lowest incidences of bean aphid and jassid were observed in
T1 (Neem oil treated plot @ 3 ml/L of water) at different days after sowing
whereas the higher incidences was found in T6 ( Furadan 5G @ 5 g/Plot.) For
management of thrips and pod borer, T1 (Neem oil @ 3 ml/L of water) as well as
T2 (NSKE @ 5 ml/L of water) demonstrated the highest performance whereas T5
(Dursban 20EC @ 2 ml/L of water) showed the lowest performance under the
present study. Yield and yield performance against different insect pests were
significantly influenced by different treatments. Highest number of healthy pods
(480.33)/4m2 was obtained in T1 (Neem oil treated plot) where the lowest
(263.67)/4m2 in T5 ( Dursban 20 EC treated plot). The highest percent of pods
weight (78.32%) was obtained with T1 (Neem oil treated plot) treatment while the
lowest percent of pods weight (69.21%) was obtained with T4 (Marshal 20 EC
treated plot) considering percent infestation of pods by number and weight
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: JULY-DECEMBER, 2009
