http://localhost:8080/handle/123456789/3039 2026-04-18T21:05:18Z http://localhost:8080/handle/123456789/3373 EFFECT OF BIOPESTICIDES ON MAJOR INSECT PESTS OF CABBAGE AND THEIR NATURAL ENEMIES BEGUM, AKLIMA The study was conducted in the central farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during October 2018 to March, 2019 to know the effect of biopesticides on major insect pests of cabbage and their natural enemies. Six treatments were used under the experiment. They were T 1 = Spinosad, T 2 = SNPV (Spodoptera litura nuclear polyhedrosis virus), T 3 ii = Spodolure trap, T 4 = Spodolure trap + Spinosad spray, T 5 = Spodolure trap + SNPV spray and T 6 = untreated control. The experiment was laid out in a Randomized Complete Block Design (RCBD) with four replications. Results revealed that the lowest number of infested leaves by flea beetle (0.33/ 5 plants), tobacco cutworm (0.33/ 5 plants), semilooper (0.33/ 5 plants), diamondback moth (1.33/ 5 plants) and aphid (7.50/ 5 plants) were found in T 4 treatment (Spodolure trap + Spinosad). In case of incidence of natural enemies, the highest number of lady bird beetle (8.00/plot) and spider (8.60/plot) was also found from T 4 (Spodolure trap + Spinosad) treatment compared to untreated control. The highest percentage of healthy plants (91.67%), highest weight of healthy cabbge head plant -1 (1.20 kg), marketable cabbage head plot (19.48 kg) and marketable yield of healthy cabbage head (45.08 t ha ) was found in T 4 (Spodolure trap + Spinosad) treatment. Spodolure trap in combination with Spinosad spray may be considered as effective practice for the management of cabbage insect pests and conservation of natural enemies. A Thesis Submitted to the Department of Entomology Sher-e-Bangla Agricultural University, Dhaka In partial fulfillment of the requirements for the degree of MASTER OF SCIENCE (MS) IN ENTOMOLOGY 2018-01-01T00:00:00Z http://localhost:8080/handle/123456789/3372 EVALUATION OF SOME REDUCED-RISK INSECTICIDES FOR THE CONTROL OF LEGUME POD BORER MARUCA VITRATA FAB IN COUNTRY BEAN COUNTRY BEAN COUNTRY BEA FERDOUS, JANNATUL The experiment was demonstrated at the central farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh to appraise the performance of different management practices in controlling legume pod borer of country bean 1 : Application of MNPV at 7 days interval. T : Application of Success 2.5 SC vi 3 2 : Application of Proclaim 5 SG : Application of Cypermethrin @ 1ml/L of water at 7 days interval.T 5 4 : untreated. The experiment was laid out in Randomized Complete Block Design the lowest percent pod infestation was observed from T 5 3 -1 was observed from T 3 was measured in T 5 -1 was recorded from T was recorded from T 3 5 -1 3 -1 was found from T 3 5 was recorded from T 5 -1 , no. of flower inflorescence ,no. of pod inflorescence -1 , and pod length, i.e., the yield was increased with the increase of pods inflorescence -1 , pod length, no. of inflorescence plant -1 , no. of flower inflorescence . From this study, it may be terminated that T treatment 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 ( ENTOMOLOGY 2018-01-01T00:00:00Z http://localhost:8080/handle/123456789/3054 INTEGRATED MANAGEMENT OF CUCURBIT FRUIT FLY ON ASH GOURD ZILANI, MD. GOLAM A field experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University to find out the effective as well as hazards free management practice(s) of cucurbit fruit fly infesting ash gourd cultivated during Kharif I season from February 2018 to June 2018. There were six treatment including untreated control. The treatments were as follows T 1 (comprised of setting up of pheromone trap replaced at 1 month interval), T 2 (comprised of setting up of poison bait trap @ 2 g Sevin 85 WP mixed with 100 g mashed sweet gourd and 10 ml molasses replaced at 4 days interval), T 3 (comprised of setting up of banana pulp trap @1 ml malathion 57EC with 100gm mashed banana pulp @ 4days interval), T 4 (comprised of spraying of Neem oil @ 3 ml neem oil and 10 ml Trix mixed with 1 liter of water @ 7 days interval), T 5 (comprised of covering fruit with polythene bag at 1 poly bag per fruit @ 4 days interval); T 6 (comprised of untreated control). The experiment was laid out in Randomized Complete Block Design (RCBD) with four replications.Covering fruit with polythene (T 5 ) contributed to produce the highest number of healthy fruit (14.50 fruit/plot); total weight of healthy fruit (103613gm/plot) and reduced the maximum fruit infestation over control (93.75%). The maximum single fruit weight over control (49.46%) was recorded in T 5. The higher temperature (34.5 C) negatively affected the capturing of adult fruit fly for poison bait trap because of drying up of bait materials, but not affected on the adult capturing capacity of pheromone trap. The highest benefit cost ratio (42.24) was also found for T 5 and the lowest BCR (19.23) for T 3 . Considering the social acceptance and environmental safely point of view, T 5 comprising of covering fruit with polythene bag was the most effective management practices in reducing the fruit fly infestation. Thereby increasing the yield of ash gourd. o 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, 2018 2018-06-01T00:00:00Z http://localhost:8080/handle/123456789/3053 COMPARATIVE STUDY FOR THE MANAGEMENT OF BRINJAL SHOOT AND FRUIT BORER AND EPILACHNA BEETLE WITH BOTANICALS AND SOME SELECTED CHEMICAL INSECTICIDES MALLIK, HAPPY A field experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University to find out the effective as well as hazards free management practice(s) of brinjal, cultivated during Rabi season (November, 2017 to March, 2018). The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The experimental treatments were T 1 comprised of spraying of neem oil @ 3 ml neem oil and 10 ml trix mixed with 1 liter of water @ 7 days interval; T 2 comprised of spraying of neem seed kernel extract @ 5.0 ml/L of water at 7 days interval; T 3 comprised of spraying of bioneem plus @ 3.0 ml/L of water at 7 days interval; T 4 comprised of spraying of Marshal 25 EC@ 3.0 ml/L of water at 7 days interval; T 5 comprised of spraying of Ripcord 20 EC @ 1.0 ml/L of water at 7 days interval; T 6 comprised of spraying of Imitaf 20 SL @ 0.1 ml/L of water at 7 days interval; T 7 comprised of spraying of Actara 25 WG @ 0.2 gm/L of water at 7 days interval; T 8 comprised of untreated control. Treatment T 7 contributed to reduce the highest number of brinjal shoot and fruit borer (2.17 brinjal shoot and fruit borer/plant), number of bore (1.12 bores/five fruits), number of infested shoot (2.08 infested shoot/five plants), number of infested fruits caused by BSFB (1.39 fruit/plant), percent fruit infestation at early fruiting stage (4.93%), mid fruiting stage (10.00%) and late fruiting stage (13.84%) in number and early fruiting stage (19.52%), mid fruiting stage (16.11%) and late fruiting stage (15.31%) in weight, number of epilachna beetle (1.14 epilachna beetle/plant), percent leaf and plant infestation by epilachna beetle (9.20%) and (8.33%), percent of edible portion of infested fruit (90.49%), single fruit weight (39.00 gm) and yield (35.36 ton/ha). T 1 also contribute to reduce the incidence of infestation by considering the above mentioned parameters. The yield found in the T 1 treated plots was 28.58 ton/ha. Considering the environmental hazard and effect of incidence of beneficial arthropods T 1 was the best treatment against brinjal shoot and fruit borer and epilachna beetle of brinjal. 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, 2018 2018-06-01T00:00:00Z