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SCIENTIST:
1.
Debojit Das,
Scientist – D
MANDATES:
Ø Generation of information regarding mulberry and silkworm pests.
Ø Implementation of the projects related to management of pests of
mulberry and silkworm.
Ø Monitoring of incidence of pests of mulberry and silkworm.
Ø Generation of database on pest incidence.
Ø Providing consultancy for management of pests to the Department of
Sericulture and National Silkworm Seed Organization.
Ø Providing faculty support to different structured &
non-structured courses of the Training division.
Ø Imparting training to the field functionaries for management of
pests.
Ø Large scale awareness campaign and field demonstration of insect
pest management technologies.
ACHIEVEMENTS:
Mulberry Pests
Ø Life cycle of Pink mealy bug, Maconellicoccus hirsutus was studied.
Ø Tukra
incidence pattern in various ecozones was
recorded.
Ø Life cycle of whitefly, Dialeuropora decempuncta was studied
Ø Leaf yield loss was determined due to infestation of major mulberry
pests like Thrips, Mealy bug and Whitefly.
Ø Economic Threshold Level for Thrips /
Mealy bug / Whitefly was determined.
Ø Recommended control measures for management of Thrips
/ Mealy bug / Whitefly.
Ø Forewarning calendar for major mulberry pests for three traditional
districts of west Bengal was prepared.
Ø Hot spot zones for whitefly infestation were identified in three
traditional districts of West Bengal.
Silkworm Pest
Ø Life cycle and biology of Uzi fly was studied.
Ø Survey and surveillance of Uzi fly was done.
Ø Uzi fly control was done with chemosterilant.
Ø Extent of crop loss due to Uzi fly infestation was determined.
Ø Forewarning Calendar for Uzi fly incidence pattern in traditional
districts of West Bengal was prepared.
Ø Mechanical and chemical control measures were recommended for
management of Uzi fly.
RESOURCES:
1. Stereoscopic Microscope (Leitz)
2. Centrifuge (Remi T 24)
3. Illuminated magnifying
glass (Swivel Lens 10 X 4x)
4. Electronic balance (Anamed)
ONGOING PROJECTS:
1. PRE-3345: Development of
weather based forewarning system for mulberry pests. (2005 – 2010) Extended
up to 2015.
2. ARE-3464: Biology and
feeding efficacy studies of Scymnus pallidicolli (Mulsant)
for the eco-friendly management of pink mealy bug, Maconellicoccus
hirsutus (Green).
(2011 – 2013)
PROGRAMME:
1. BPR(VP)-006:
Studies on the field efficacy of selected does of insecticide in whitefly
management. (2011 – 2013)
Validation Programme:
1. Field evaluation of
botanical insecticides for management of major mulberry pests and their
impact on leaf yield (2008 –10).
CONCLUDED PROJECTS:
PRE-
001 : Control of
mulberry pests for thrips and mealy bug
Highlights
:
Ø Determined leaf yield loss
due to major mulberry pests like Thrips and Mealy
bug.
Ø Determined Economic
Threshold Level of Thrips and Mealy bug .
Ø Recommended control measures
for management of Thrips and Mealy bug.
Ø Forewarning calendar for Thrips and mealy bug for three traditional districts of
West Bengal was prepared.
ARE- 001 : Life table and population
dynamics of Uzi fly on its primary host, Bombyx mori .
Highlights
:
Ø Extent of crop loss due to Uzi infestation was determined.
Ø Seasonal incidence of Uzi fly was recorded.
Ø Forewarning calendar for Uzi fly was prepared.
ARE- 002: Control of Uzi fly.
Highlights:
Ø Mechanical and chemical
control measures for Uzi fly were developed.
PRE- 3155: Studies on whitefly and its
management
Highlights:
Ø Incidence
of whitefly population was studied along with abiotic factors, secondary hosts
and natural enemies.
Ø Forewarning
calendar for whitefly for three traditional districts of West Bengal was
prepared.
Ø Crop
loss due to whitefly infestation was estimated.
Ø Economic
Threshold Level of whitefly was determined.
Ø Control
measures through mechanical, botanical / chemical and biological means for
management of whitefly were recommended.
BHRTEMP
– 0002: Screening and
short listing of plant extracts for their insecticidal effect.
Highlights:
Crude extracts from
three locally available plants were short listed for insecticidal
properties against mulberry pests.
PRE 3311: Efficacy of
Botanical insecticides for management of major mulberry pests and their
bio-safety to silkworm and natural enemies.
Highlights:
Ø For control of thrips 1.0% Nicotine ex, 2.0% Pongamia
oil and 2.0% Neem oil, for mealy bug 1.5% Pongamia oil, 2.0% Neem oil
& 2.0% Nicotine ex. & for whitefly 1.0% Neem
oil, 1.0% Nicotine ex. & 1.0% (Pongamia oil +
Neem oil 1:5) were found effective in
suppression.
Ø Of the treatments found
effective 1.5% Pongamia oil, 2.0% Pongamia, 1.0% Nicotine ex, 2.0% Nicotine ex, &
1.0% (Pongamia oil + Neem
oil 1:5) have no impact on survival and economic characters and are on par
with the control.
Ø Botanical insecticides were
found to be safe to the native predators.
PRE-3394: Studies on the
efficacy of some insecticides for management of whitefly and their
bio-safety to silkworm, Bombyx mori (2007-2010).
Highlights:
Ø Effective concentration of
a new chemical insecticide, thiamethoxam (0.015%) was identified for the management of whitefly
(Safe period : 14 days) with a benefit cost ratio 2.74: 1.
Ø This technology is being
validated at 25 (nos.) farmers’ fields spread over three traditional
districts of West Bengal during 2011-2013.
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