23 Kas 2024 Cumartesi
Evaluation of integrated approaches for the management of brinjal shoot and fruit borer utilizing antixenotic variety of brinjal
Abstract :An experiment was conducted to evaluate the
effectiveness of 10 integrated approaches comprising Antixenotic variety,
mechanical control, repellent crop, sex pheromone and chemical insecticides for
the management of BSFB in brinjal grown in the experimental farm of Bangabandhu
Shiekh Mujibur Rahman Agricultural University, Gazipur in Winter 2005. The
highest shoot infestation reduction over control (84.71%) was recorded in IPM
package plots consisting of antixenotic variety +Mechanical control + Marshal
20 EC @ 1ml/L applied at 15 days interval. Among the IPM packages, the package
consisting of antixenotic variety +Mechanical control + Marshal 20 EC @ 1ml/L
applied at 15 days interval was found as the most effective package and
provided the highest shoot (60.97%) and fruit (75.94%) infestation reduction
over control. This package resulted significantly the highest healthy brinjsl
fruit yield of 39.69 t/ha.IPM package of AV+MC+CSensured the
maximum yield increase (66.88%) of healthy fruit over control. This was
followed by 49.94% in (AV+SP) 42.03% in AV+MC+SP, 32.59% in AV+CS, 24.40% in
AV+MC+ Soluk, and, 23.79% in AV+MC+NS IPM packages. Similarly
the maximum reduction of 88.04% infested fruit yield was observed in IPM
package, AV+MC+CS. The adjusted net return was the highest (Tk 2,33920.0) in
IPM package consisting of AV+ MC+ Spray of Marshal 20EC @ 1mi/L of water and
was followed by Tk. 158820.0 in AV+MC+SPTk 127040.0 in AV+CS Tk 93560in AV+MC+ Soluk Tk 91020.0 in AV+MC+NS
treatment. Similarly it is revealed that the BCR was the highest (72.35) in
case of AV+NS due to low cost of seed price of neem. It is evident from the
analysis that the use of pesticide gave higher return than the non chemical
packages (AV+MC+Soluk, AV+MC+SP, AV+MC+NS). The total number of lady bird
beetle and spider was highest (24.32%) in the plot of IPM package consisting of
AV+soluk followed by untreated control (18.39%)having only antixenotic variety
and in plots of AV+MC+Soluk (22.32). It was lowest (12.46%) in AV+MC+CS
and 12.61% in IPM package with AV+SP. In
case of spider, the total number of spider is lower than the untreated control
except IPM package containing brinjal planted with umbellifer. Highest percent
parasitazation was recorded in the
untreated control (9.67%) plots followed
by IPM package having AV+MC (8.57%), package with AV+SP (8.33%), AV+ MC +sex
pheromone (9.33%) . But lowest percent parasitization was recorded from IPM
package plots of AV+ MC+ Chemical spray (6.25%).
Management of BSFB, brinjal, India