http://localhost:8080/handle/123456789/2747 2026-04-18T16:17:06Z http://localhost:8080/handle/123456789/5581 EFFECT OF INTERCROPPING WITH MUSTARD ON INCIDENCE OF APHID (LIFAPHIS ERYSIMI) ALAM, MOHAMMAD SHIFUL The experiment was conducted in the research field of Sher-e-Bangla Agricultural University farm, Sher-e-Bangla Nagar, Dhaka-1207, Bangladesh during the period from November, 2013 to February, 2014 to evaluate the effect of intercropping on the incidence of mustard aphid. The experiment consists of six treatments such as Mustard with coriander, Mustard with fenugreek, Mustard with radhuni, Mustard with black cumin, Mustard with wheat and control (Mustard sole). It was laid out in Randomized Complete Block Design (RCBD) with three replications. Sole cropping of mustard was grown to compare the effectiveness of other intercropping treatments. The lowest number of infested plant per plot (17.82), flower infestation per plant (17.72%), total branch per infested plant (4.39), siliqua infestation per plant (65.13%) were recorded in mustard with coriander intercropping treatment. On the contrary, the highest number 33.96, 32.78%, 5.46, 98.08% respectively were recorded in control treatment. The maximum number of total siliqua per infested branch (25.73), total seed per infested siliqua (23.20), total seed weight per infested plant (8.86g) and total yield (0.49 tlha) were recorded in mustard with coriander intercropping treatment and the lowest result 17.83, 15.97, 4.67g, 0.19 t/ha respectively were recorded in control treatment. Among the intercropping combinations, mustard with coriander was the most effective treatment for the management of mustard aphid as well as producing the highest yield en_ 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 2014-01-01T00:00:00Z http://localhost:8080/handle/123456789/5330 EVALUATION OF DIFFERENT ECO-FRIENDLY MANAGEMENT PRACTICES AGAINST FRUIT FLY OF BOTTLE GOURD AKTER, SHARMIN The study was conducted in the experimental field of Sher-e-Bangla Agricultural University , Dhaka during the period from October, 2021 to April, 2022 to find out the evaluation of different eco-friendly management practices against fruit fly of bottle gourd . The experiment was laid out in a Randomized Complete Block Design replicated with three replications. In this study, treatments T 1 ii = Using pheromone trap; T 2 = Using bait trap with banana mashed at 5 days interval; T 3 = Using bait trap with sweet gourd mashed at 5 days interval; T 4 = Using pheromone trap + Using bait trap with banana mashed at 5 days interval; T 5 = Using pheromone trap + Using bait trap with sweet gourd mashed at 5 days interval; and T 6 = Untreated control where nothing were applied. T 5 showed the best performance in terms of number of fruit fly (4.09 adult) captured, percent reduction of fruit infestation by number over control at early (84.50%), mid (77.68%) and late (76.57%) fruiting stages; percent reduction of fruit infestation by weight over control at early (75.43%), mid (72.05%) and late (64.17%) fruiting stages; fruit length (54.87cm), fruit girth (24.37cm), single fruit weight (2.59kg) and yield (71.37t/ha) . The overall study revealed that, the most significant performance was achieved from T 5 treatment (Using pheromone trap + Using bait trap with sweet gourd mashed at 5 days interval) which contributed to highest control of cucurbit fruit fly as well as the maximum increase of healthy fruit length, girth and the yield. A Thesis Submitted to Department of Entomology, Faculty of Agriculture. Sher-e-Bangla Agricultural University, Dhaka- In partial fulfillment of the requirements for the degree of MASTERS OF SCIENCE (MS) IN ENTOMOLOGY 2022-01-01T00:00:00Z http://localhost:8080/handle/123456789/5329 EFFICACY OF BIO-RATIONAL INSECTICIDES IN CONTROLLING THRIPS IN SUMMER COUNTRY BEAN BEGUM, MOST. SUKHY The experiment was conducted at the central farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh to study the efficacy of biorational insecticides in controlling thrips country bean in summer. The experiment consists of the following management practices: T 1 =Spraying Neem oil @3 ml/L of water at 7 days interval, T 2 =Spraying Neem leaf extract @200mg/L of water at 7 days interval, T 3 = Mehgoni leaf extract@200mg/L of water at 7 days interval, T 4 =Tobacco leaf powder@30mg/L of water at 7 days interval, T 5 = Spraying Spinosad @0.4ml/L of water at 7 days interval, T 6 =Spraying Biotrin@1.4ml/L of water at 7 days interval and T 7 = Untreated control. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Data on number of thrips as insect pest, plant, leaf, inflorescence and pod infestation, different yield contributing characters and yield of summer country bean were observed. Among the seven (7) treatments the lowest number of thrips (2.50 plant ii -1 ) was observed in T 5 (Spraying Spinosad @0.4ml/L of water at 7 days interval), while highest number of thrips (16.67 plant -1 ) was observed in T 7 (Untreated control). The highest percentage of thrips reduction over control (85.50%) was observed in T 5 (Spraying Spinosad @0.4ml/L of water at 7 days interval) treatment. The present study revealed that the lowest number of thrips as insect pest and increased plant, leaf, inflorescence and pod infestation, different yield contributing characters and yield of country bean might be obtained by using the treatment T 5 (Spraying Spinosad @0.4ml/L of water at 7 days interval) besides T 6 (Spraying Biotrin@1.4ml/L of water at 7 days interval) performed as second best treatment whereas, T 7 (Control) and T 3 (Mehgoni leaf extract@200mg/L of water at 7 days interval) may protect the country bean at lowest rate in summer. The highest (3.08) benefit cost ratio was obtained due to application of T 5 (Spraying Spinosad @ 0.4ml/L of water at 7 days interval) while the lowest (2.26) in T 7 (control). A Thesis Submitted to Department of Entomology, Faculty of Agriculture. Sher-e-Bangla Agricultural University, Dhaka- In partial fulfillment of the requirements for the degree of MASTERS OF SCIENCE (MS) IN ENTOMOLOGY 2022-01-01T00:00:00Z http://localhost:8080/handle/123456789/5328 ECO-FRIENDLY MANAGEMENT OF FRUIT FLY INFESTING CUCUMBER MOMOTAJ, AFRINA An experiment was conducted in the research field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh, from October 2021 to January 2022 to evaluate eco-friendly management of fruit fly infesting cucumber. There were several insect pests in the cucumber field that could bring about a significant impact on the yield and quality of the cucumber itself and among them, fruit fly is the most prevalent and harmful. The experiment was laid out in Randomized Complete Block Design and replicated 3 times. For this study, 8 treatments were used and these were T 1 : using Pheromone trap @1 trap/plot/2 weeks; T 2 : using Poison bait trap @ 1 trap/plot; T 3 : using Pheromone trap @1 trap/plot/2 weeks + Using Poison bait trap @ 1 trap/plot; T 4 : spraying Neem oil @ 3ml/L of water at 7 days interval; T 5 : spraying garlic extract @ 3ml/L of water at 7 days interval; T 6 : spraying Neem seed kenrnel extract @ 3g/L of water at 7 days interval; T 7 : using Pheromone trap @1 trap/plot/2 weeks + Spraying Neem oil @ 3ml/L of water at 7 days interval; T 8 : untreated control. Local variety ‘Baromashi’ was used as the experimental material. The lowest fruit infestation by number at early, mid & late fruiting stage, fruit infestation by weight at early, mid & late fruiting stage were recorded (12.50%, 14.29%, 16.67%, 11.25%, 5.35%, 17.96%, respectively) in T 7 treatment. Again, the highest edible portion of infested fruit at early, mid & late fruiting stage, single fruit weight, length of healthy fruit, length of infested fruit, and yield were recorded (53.37%, 58.98%, 62.89%, 136.56g, 19.89cm, 15.31cm, and 15.56 t/ha, respectively) in T 7 treatment. From the study it was revealed that, pheromone trap along with spraying neem oil substantially reduced maximum fruit fly infestation in cucumber at field condition. A Thesis Submitted to Department of Entomology, Faculty of Agriculture. Sher-e-Bangla Agricultural University, Dhaka- In partial fulfillment of the requirements for the degree of MASTERS OF SCIENCE (MS) IN ENTOMOLOGY 2022-01-01T00:00:00Z