Abstract:
The experiment was conducted in the laboratory under the Department of
Entomology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the
period from April to July, 2011 to find out the eco-friendly management of pulse
beetle using some promising botanicals and fumigants on stored mungbean. The study
consist two separate experiments considering botanical and fumigant. Five botanicals
were used viz. dried leaf powder of neem @ 2.5 g/kg mungbean grains (T1), bishkatali
@ 2.5 g/kg mungbean grains (T2), marigold @ 2.5 g/kg mungbean grains (T3),
dholkolmi @ 2.5 g/kg mungbean grains(T4), chopped garlic bulb @ 1.0 g/kg
mungbean grains (T5) along with control (T6). Three fumigants viz. camphor @ 1.0
g/kg mungbean grains (T1), phostoxin tablet @ 200 mg/kg mungbean grains (T2),
naphthalene @ 500 mg/kg mungbean grains (T3) along with control (T4). The
experiments were laid out in Completely Randomized Design with four replications.
It was observed that the treatment T1 reduced the highest percent of grain infestation
by number and weight (43.12% & 41.72%, respectively) over control than other
botanicals while T3 showed the least performance (6.57% &2.25%, respectively).
Conversely, T5 reduced the highest percent of adult emergence (43.65%) and grain
content loss (49.91%) over control while T3showed the least performances (11.71%).
Similarly, T5 increased the highest percent seed germination (25.65%) over control
while the lowest was in T2 (6.57%). Among three fumigants, T1 reduced the percent
of grain infestation by number and weight (49.65% &49.54%, respectively), adult
emergence (77.66%) and grain content loss (95.18%) over control than other
fumigants. Conversely, T1 increased the highest percent of seed germination (26.57%)
over control than other fumigants. Irrespective of botanicals and fumigants, all
fumigants especially camphor showed better performance. So, it can be concluded
that camphor @ 1.0 g/kg mungbean grains was suitable for managing pulse beetle on
stored mungbean.
Description:
A Thesis
Submitted to the Department of Entomology, Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE(MS)
IN
ENTOMOLOGY
SEMESTER:JANUARY-JUNE,2011