Year 2020http://localhost:8080/handle/123456789/33812026-04-18T15:43:07Z2026-04-18T15:43:07ZCROSS-CUTTING ISSUES OF PESTICIDES AND HAZARD FREE MANAGEMENT OF BRINJAL SHOOT AND FRUIT BORER IN BANGLADESHSAHA, SUMONhttp://localhost:8080/handle/123456789/49242023-06-08T11:16:03Z2020-01-01T00:00:00ZCROSS-CUTTING ISSUES OF PESTICIDES AND HAZARD FREE MANAGEMENT OF BRINJAL SHOOT AND FRUIT BORER IN BANGLADESH
SAHA, SUMON
Several studies were conducted in the experimental field of Sher-e-Bangla Agricultural
University (SAU), Sher-e-Bangla Nagar, Dhaka, Bangladesh, during February 2016 to March
2020 to evaluate the cross-cutting issues of pesticides and hazard free management of brinjal
shoot and fruit borer in Bangladesh. In Bangladesh, farmers have been facing problem in
cultivation of brinjal in the field due to brinjal shoot and fruit borer (Leucinodes orbonalis
Guenee), the most destructive insect pests of brinjal. A field survey was conducted with 310
brinjal farmers in five major brinjal growing districts. From the survey it was found that
farmers of the major brinjal growing districts of Bangladesh are concerned about the brinjal
shoot and fruit borer, destructive phase of BSFB and the favorable season of BSFB. 57.4%
farmers under the survey used cocktail of synthetic insecticides (2-3 insecticides) against the
BSFB. In Jashore region, farmers used insecticides two days interval. Beside this, the farmers
were known about the hazard free management practices like using pheromone trap, biopesticides,
etc. From the varietal screening it was found that, BARI Bt Brinjal-1 was most
resistant cultivar against BSFB infestation, whereas BARI Begun-10 was most susceptible
variety. The BARI Trap II showed the best performance resulting the lowest shoot infestation,
fruit infestation by number and fruit infestation by weight (10.0, 8.08 and 9.44 percent,
respectively) when it was set at canopy level in the brinjal field. The BARI Trap II also showed
the best performance in producing highest fruit yield when it was set at canopy level in the
brinjal field. From the comparative study of ecological and chemical approaches, it was
revealed that, spraying of Marshal 20 (Carbosulfan) @ 3.0 ml/L of water at alternate 7 days
interval showed the lowest fruit infestation by number, fruit infestation by weight, shoot
infestation, and the highest length of healthy fruit, girth of healthy fruit, length of infested fruit,
girth of infested fruit, number of bores fruit
iv
-1
, the highest weight of edible portion of infested
fruit, the lowest weight of non-edible portion of infested fruit and yield (13.91%, 13.96%,
10.79%, 8.72 cm, 21.75 cm, 5.85 cm, 14.02 cm, 2.67 bores, 3.00 g/fruit, 0.39 g/fruit and 8.84
kg/plot, respectively) in the brinjal field. In the study of IPM packages for brinjal shoot and
fruit borer management, IPM package-7 comprised of Pheromone Trap located at the canopy
level @ 1 lure at 30 days interval + Spraying of Neem oil (azadirachtin) @ 3.0 ml/L and
Marshal 20 EC (carbosulfan) @ 3.0 ml/L of water at alternate 7 days interval, respectively
showed the best performance and found the lowest fruit infestation by number, fruit infestation
by weight, shoot infestation, and the highest length of healthy fruit, girth of healthy fruit, length
of infested fruit, girth of infested fruit, number of bores fruit
-1
, the highest weight of edible
portion of infested fruit, the lowest weight of non-edible portion of infested fruit and yield
(13.76%, 14.86%, 10.85%, 8.67 cm, 22.16 cm, 5.84 cm, 13.96 cm, 1.33 bores, 0.48 kg, 0.05
kg and 8.77 kg/plot, respectively) in the brinjal field.
A dissertation
Submitted to the faculty of Agriculture, Sher-e-Bangla Agricultural
University, Dhaka in partial fulfillment of the requirements for the degree
of
DOCTOR OF PHILOSOPHY IN ENTOMOLOGY
2020-01-01T00:00:00ZEFFECTIVENESS OF SOME BIOPESTICIDES IN MANAGING MAJOR LEPIDOPTERAN INSECT PESTS OF CABBAGECHOYON, MD. MASUDUNNABIhttp://localhost:8080/handle/123456789/36752022-03-03T10:28:50Z2020-01-01T00:00:00ZEFFECTIVENESS OF SOME BIOPESTICIDES IN MANAGING MAJOR LEPIDOPTERAN INSECT PESTS OF CABBAGE
CHOYON, MD. MASUDUNNABI
An experiment was conducted in the experimental field of Sher-e-Bangla Agricultural
University, Dhaka, Bangladesh during the period from October, 2019 to January,
2020 to evaluate some biopesticides applied against major insect pests of cabbage.
The experiment was laid out in Randomized Complete Block Design (RCBD) with
three replications. Seven treatments, viz. T
(Abamectin 1.2EC @ 1 ml/L of water at 7
days interval); T
2
ii
1
(Azadirachtin 1EC @ 1 ml/L of water at 7 days interval); T
(Potassium salt of fatty acid @ 1 ml/L of water at 7 days interval); T
(Spinosad 45SC
@ 1 ml/L of water at 7 days interval); T
5
4
(Bacillus thuringiensis @ 1 ml/L of water at
7 days interval); T
(Abamectin + Bacillus thuringiensis @ 1 ml/L of water at 7 days
interval) and T
7
6
(untreated control) were used. Among the management practices, the
lowest mean infestation of cabbage leaf by cabbage caterpillar (6.00 leaves/5 plants)
and diamond back moth larvae (4.48 leaves/5 plants) was found in T
treated plot that
reduced the highest leaf infestation over control (62.02% and 49.85 % respectively);
whereas the highest infestation by cabbage caterpillar (15.80 leaves/5 plants) and
diamond back moth larvae (8.93 leaves/5 plants) was found in un treated plot (T
4
).
The lowest mean incidence of cabbage caterpillar (6.82 larvae/5 plants) and
diamondback moth (4.87 larvae/5 plants) was found in T
that reduced highest
incidence over control (50.33% and 51.90% respectively); whereas the highest values
of all these parameters were achieved from untreated control treatment (T
4
).The
lowest cabbage head infestation (21.37%) was recorded in T
, that gave the highest
yield of cabbage (36.40 t/ha) followed by T
1
4
(34.07 t/ha). From the above study it was
found that , the treatment T
comprised of Spinosad 45SC @ 1 ml/L of water at 7
days interval gave the highest performance compared to all other treatments used
under the present study.
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
2020-01-01T00:00:00ZEFFECT OF INTERCROPPING ON INCIDENCE OF PESTS AND PREDATORS IN CAULIFLOWER FIELDSTINA, SIRAJUM MUNIRAhttp://localhost:8080/handle/123456789/36742022-03-03T10:25:44Z2020-01-01T00:00:00ZEFFECT OF INTERCROPPING ON INCIDENCE OF PESTS AND PREDATORS IN CAULIFLOWER FIELDS
TINA, SIRAJUM MUNIRA
An experiment was conducted in the central experimental field of SAU, Dhaka, Bangladesh
during the period from November, 2019 to February, 2020 to evaluate the effect of intercropping
on incidence of pests and predators in cauliflower fields. The experiment was laid out in
Randomized Complete Block Design replicated with three times. Seven treatments were tested
for the study which are intercropped with tomato (T
1
ii
), marigold (T
2
), garlic (T
3
),
radhuni (T
5
), fenugreek (T
6
) and control (sole cauliflower) (T
7
). The results showed that, the
highest insects pests was found in control field and lowest insect incidence was found in the field
intercropped with coriander. Among the insect pests, whitefly was the major and found
maximum number in control cauliflower field as well as intercropped fields with tomato,
marigold, coriander, radhuni and fenugreek. In case of arthropod predator, field spider was major
and found in control cauliflower and integrated with tomato, marigold, garlic, radhuni and
fenugreek. Considering the pests reduction, T
4
performed best and reduced the number of aphid,
whitefly, stripped beetle, leaf miner and diamond back moth over control (43.89%, 61.15%,
75.93%, 64.66% and 51.91%, respectively). It also reduced percent plant infestation over control
(57.57%) and increased the number of predator arthropods like lady bird beetle and field spider
over sole cauliflower (103.00% and 245.12%, respectively). T
4
also showed the best
performance in terms of plant height, card length, card diameter and yield of cauliflower (36.45
cm, 18.23 cm, 15.37 cm and 24.71 t/ha, respectively). From this study, it can be concluded that
cauliflower intercropping with coriander showed the antagonistic effect to the insect pests of
cauliflower and also showed positive effect on the yield of cauliflower than the sole cultivation.
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
2020-01-01T00:00:00ZBIORATIONAL MANAGEMENT OF MAJOR INSECT PESTS OF BLACKGRAMHOSSAIN, FARHANAhttp://localhost:8080/handle/123456789/34002021-03-08T06:37:57Z2020-01-01T00:00:00ZBIORATIONAL MANAGEMENT OF MAJOR INSECT PESTS OF BLACKGRAM
HOSSAIN, FARHANA
A field experiment was guided by RCBD trial with three replications during the period
from September to November, 2019 at the Research Farm of Sher-e-Bangla
Agricultural University (SAU), Dhaka to study the biorational management of major
insect pests of blackgram. Blackgram variety BARI mash-3 (Hemantoo) was used as
planting materials for the study. The experiment consists of seven treatments as T
1
=
spinosad @0.5 ml/l of water at 10 days interval, T
2
=emamectin benzoate @1.0 ml/l of
water at 10 days interval, T
3
= lufeneuron @0.2 g/l of water at 10 days interval, T
4
=
matrine @1 ml/l of water at 10 days interval at, T
5
= thiamethoxam @0.5g /l of water
at 10 days interval, T
6
= neem seed kernel @5 g/l of water at 10 days interval & T
7
=
Untreated control. Major insect pests found were aphid, white fly, stemfly, stink bug,
jassid, flea beetle and pod borer. The lowest number of aphid per plant (3.30) was found
from T
1
, while the highest (16.53) from T
7
. The lowest number of whitefly per 10 leaves
(4.03) was found from T
5
, whereas the highest (13.60) from T
7
. The lowest number of
stemfly infestation per plant (2.10) was found from T
1
, while the highest (7.70) from
T
7
. The lowest number of stink bug per plant (1.10) was found from T
1
, while the
highest (4.33) from T
7
. The lowest number of jassid per 10 leaves (1.07) was found
from T
1
, while the highest (4.33) from T
7
. The lowest number of flea beetle per plant
(2.30) was found from T
1
, while the highest (9.40) from T
7
. The lowest number of flea
beetle infested leaf (2.00) was found from T
1
ii
, while the highest (9.90) from T
7
. At early
pod development stage, the lowest infestation (2.59%) was recorded in T
1
treatment,
whereas the highest infestation (15.60%) in T
7
treatment. At late pod development
stage, the lowest infestation (3.31%) was recorded in T
1
treatment but the highest
(14.19%) in T
7
treatment. The highest yield (1.84 ton/ha) was recorded in T
1
treatment,
whereas the lowest (1.16 ton/ha) in T
7
treatment. The highest benefit cost ratio (2.31)
was estimated for T
1
treatment, while the lowest (1.28) from T
4
treatment. Neem seed
kernel @5 g/l of water at 10 days interval treatment was less effective against most of
the insects in terms of number of insects and percent reduction of insect pests but it
showed better performance than some of the chemical insecticide. It reduced 63.31%
aphid, 33.7% whitefly,34.39% stemfly infestation, 14.26% stink bug, 75.30% jassid,
40.38% flea beetle, 44.67% flea beetle infested leaf, 18.38% pod borer infestation at
early stage and 45.94% pod borer attack at late pod development stage. It was revealed
that Spinosad @0.5 ml/l of water at 10 days interval was more effective against the
major insect pests of blackgram.
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
2020-01-01T00:00:00Z