http://localhost:8080/handle/123456789/2761 2026-04-18T14:15:47Z 2026-04-18T14:15:47Z ALAM, MOHAMMAD SHIFUL http://localhost:8080/handle/123456789/5581 2026-04-15T08:22:17Z 2014-01-01T00:00:00Z

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 SAHA, SWAKKOR http://localhost:8080/handle/123456789/1498 2019-10-01T09:34:50Z 2014-12-01T00:00:00Z

STUDY ON THE BIOLOGY OF MEALYBUG INFESTING BRINJAL AND ITS CHEMICAL CONTROL SAHA, SWAKKOR The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Shere- Bangla Nagar, Dhaka to evaluate the biology of mealybug and effect of some chemical insecticides on mealybug attacking brinjal in the field during the period from June, 2014 to October, 2014. Mean developmental periods of 1 st , 2 nd , 3 rd , instar nymphs and adults were 5.6, 8.4, 9.8 and 12 days respectively. Six insecticides were applied in replicated brinjal field. The treatments were T1: T-mectin 1.8 EC (Abamectin) @ 2.0 ml/L of water at 7 days interval; T2: Fighter 2.5 EC (Lambda cyhalothrin @ 1.0 ml/L of water at 7 days interval); T3: Voliam flexi (Thiamethoxam + Chlorantraniliprole @ 1.0 ml/L of water at 7 days interval); T4: Sevin 85 WP (Carbaryl @ 2.0 g/L of water at 7 days interval); T5: Dursban 20 EC (Chlorpyriphos @ 2.5 ml/L of water at 7 days interval); T6 : Admire 200SL (Imidachloprid @ 1.0 ml/L of water at 7 days interval); and T7 (untreated control). The result revealed that treatment T5 (Dursban @ 2.5ml/L of water) treatment was the most effective for reducing mealybug 90.22, 67.37, 64.22 and 83.84 respectively from leaf, twig, flower and fruits. The treatment T3 showed 77.17, 56.84, 45.87 and 56.57 respectively for reduction of these insect pests from those plant parts and T6 had the least performance over control. Dursban was also most effective insecticide for increasing fruit number and weight per fruit 205.83 and 41.23% respectively and in T6 it was 50 and 11.57% respectively. In terms of yield Dursban treatment was most effective increasing yield (130.23%) followed by T3(100.2%) and T1 (63.66%) treated plot. The application of Dursban at 7 days intervals was the best effective treatment for the control of mealybug pests in the brinjal field. 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: JULY-DECEMBER, 2014

2014-12-01T00:00:00Z KHATUN, MST. RUPALI http://localhost:8080/handle/123456789/1497 2019-10-01T09:35:10Z 2014-06-01T00:00:00Z

BIOLOGY AND DAMAGE ASSESSMENT OF DIFFERENT STORED GRAINS INFESTED BY ANGOUMOIS GRAIN MOTH SITOTROGA CEREALELLA (OLIVIER) IN THE LABORATORY KHATUN, MST. RUPALI Consequently two experiment was conducted in the laboratory of the Department of Entomology, Sher-e-Bangla Agricultural University, Dhaka-1207 during the period from May to December, 2014 to study to study biology and damage assessment of different stored grains infested by Angoumois grain moth Sitotroga cerealella (Olivier) in the laboratory. Rice, wheat and maize seeds were used as experimental materials. The rice moth, S. cerealella (livier) adults started mating after 24 hrs of emergence. On rice grains the female moth lays 80-140 eggs with an average of 109 eggs, whereas on wheat grains the female moth lays 71-97 eggs with an average of 82.7 eggs and in maize the female moth lays 49-73 eggs with an average of 55 eggs throughout its life. Morphometric measurement revealed that in consideration of larva, length was 16.0 ± 0.19, 17.5 ± 0.18 and 18.2 ± 0.07 mm, respectively for rice, wheat and maize grains and width was 2.90 ± 0.04, 3.10 ± 0.09 and 3.27 ± 0.12 mm, respectively for rice, wheat and maize grains. At 1st generation in weight basis, the highest (14.29%) infestation was recorded in rice stored grains, whereas the lowest (8.70%) infestation was recorded in maize grains seeds. At 2nd generation in weight basis, the highest (21.79%) infestation was recorded in rice stored grains which was closely followed (17.07%) by wheat grains, whereas the lowest (13.64%) infestation was recorded in maize grains seeds. At 3rd generation in weight basis, the highest (22 g) weight of infested seeds was recorded in rice grains, while the lowest (16 g) was found in maize grains. Consideration of infestation, the highest (33.85%) infestation was recorded in rice stored grains, whereas the lowest (19.51%) infestation in maize grains seeds. At 1st generation in case of weight loss, the highest (16.50%) weight loss was observed in rice seeds, whereas the lowest (10.15%) weight loss was recorded in maize seeds as a grain store. At 2nd generation in case of weight loss, the highest (30.25%) weight loss was observed in rice seeds, whereas the lowest (21.63%) weight loss was recorded in maize seeds. At 3rd generation in case of weight loss, the highest (43.50%) weight loss was observed in rice seeds, whereas the lowest (15.20%) weight loss was recorded in maize seeds as stored grains. 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 SEMESTER: JANUARY-JUNE, 2014

2014-06-01T00:00:00Z SULTANA, MOST. TOFZILA http://localhost:8080/handle/123456789/1496 2019-10-01T09:35:29Z 2014-12-01T00:00:00Z

INSECT PESTS INCIDENCE IN GROUNDNUT AND THEIR MANAGEMENT SULTANA, MOST. TOFZILA The experiment was conducted in the field of Sher-e-Bangla Agricultural University farm, Sher-e-Bangla Nagar, Dhaka, Bangladesh during the period from December 2013 to May 2014 to study the insect pests incidence in groundnut and their management. Jhingabadam variety was used as a test crop for this experiment. The experiment comprised of the following treatments -T1: Neem oil @ 5 ml with trix 10 ml at 10 days interval; T2: Dimethoate (Tafhor 40EC) @ 2.0 ml/L of water at 10 ml at 10 days interval; T3: Imidacloprid (Admire 200SL) 0.5 ml/L of water at 10 ml at 10 days interval; T4 : Lambda- cyhalothrin (Reeva 2.5 EC) @ 1.0 ml/L of water at 10 ml at 10 days interval; T5: Tiametoxam + Clorantraniliprole (Voliam flexi 3000SC) @ 0.5 ml/L of water at 10 ml at 10 days interval; T6: Chlorpyrifos + Cypermethrin (Nitro 505EC) @ 1.0 ml/L of water at 10 ml at 10 days interval; and T7: Untreated control. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The highest percentage of infested shoots/plant at early, mid, late flowering stage (13.25%, 15.56%, 18.75% respectively) was observed in T7 treatment while the lowest percentage of infested shoots/plant (3.48%, 3.49%, 3.26% respectively) was observed in T6 treatment . The highest percentage of infested flowers/plant at early, mid, and late flowering stage (12.04%, 13.69%, 14.70% respectively) was observed in T7 treatment while the lowest percentage (2.16%, 3.09%, 3.96% respectively) was found in T6 treatment. The highest plant height (53.30 cm) was recorded in T6 treatment and the lowest (40.88cm) was found in T7 treatment . The maximum yield per hectare (2.72 ton) was found in T6 treatment and minimum yield (1.98 ton) was observed in T7 treatment. The findings of the current study indicated that spraying of Chlorpyrifos + Cypermethrin (Nitro 505EC) @ 1.0 ml/L of water at 10 days interval was the best effective treatment for the management of major insect pests of groundnut cultivation. 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 SEMESTER: JULY-DECEMBER, 2014

2014-12-01T00:00:00Z