http://localhost:8080/handle/123456789/2769 2026-04-18T16:23:40Z 2026-04-18T16:23:40Z AHMED, SHAKIL http://localhost:8080/handle/123456789/1649 2019-10-01T10:22:14Z 2016-06-01T00:00:00Z

INCIDENCE OF RED PUMPKIN BEETLE AND FRUIT FLY ON DIFFERENT VARIETIES OF SWEET GOURD AHMED, SHAKIL The experiment was conducted in the central farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during the period from April to July, 2015 to find out the incidence of red pumpkin beetle and fruit fly on different varieties of sweet gourd. Seven varieties of sweet gourd. V1: Sweet Queen V2: Pronoy F1 (hybrid), V3: Thai Sweet, V4: Big Boss, V5: Monika, V6: Shokti and V7: Syndrila were the experiment material. The experiment was laid out in Randomized Complete Block Design (RCBD) with four replications. Data on infestation level of different growth stages were recorded to find out the tolerant variety of sweet gourd for better production. The maximum infestation occurred by Red pumpkin beetle in Thai sweet (32.00 %) variety followed by Pronoy F1 (20.00 %) variety. On the other hand the minimum infestation percentage occurred in Big Boss (5.00 %) and Shokti (5.00 %) variety. Big Boss and Shokti varieties were found less susceptible to the Red pumpkin beetle than the other varieties. Maximum infestation caused by cucurbit fruit fly were in Thai sweet (23.00 %) and Pronoy F1 (23.00 %) varieties and the minimum infestation occurred by fruit fly was found in Shokti (2.00 %) variety. Shokti variety also showed the lowest susceptible to cucurbit fruit fly. Shokti (V6) variety is less susceptible to the red pumpkin beetle and cucurbit fruit fly than the other varieties and it gave better results on growth and yield (25.23 t/ha) of sweet gourd. 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 SEMESTER: JANUARY - JUNE, 2016

2016-06-01T00:00:00Z MUNNI, RIFAT NAZNIN http://localhost:8080/handle/123456789/1648 2019-10-01T10:22:28Z 2016-06-01T00:00:00Z

DEVELOPMENT OF INTEGRATED PEST MANAGEMENT PACKAGE(S) AGAINST INSECT PEST COMPLEX OF SOME WINTER CUCURBIT VEGETABLES MUNNI, RIFAT NAZNIN The research work was conducted on integrated pest management package(s) against insect pest complex of some winter cucurbits vegetables during rabi season (October-May) of 2015-2016. The experiment was embraced of six treatments including untreated control treatment and laid out Randomized Complete Block Design (RCBD) with three replications. At the vegetative and reproductive stage of bottle gourd, in term of leaf infestation due to red pumpkin beetle, aphid, white fly and leaf eating caterpillar, T5 (Cultural + Mechanical control method + Spraying Sevin 85 SP @1.5 g/L of water at 7 days interval) treatment showed the best performance of all of the treatments and reduction over control were (64.12, 73.91, 74.19, 68.56 and 56.49, 75.20, 75.61, 74.26 % respectively) whereas the lowest performance showed the untreated control treatment T6. Similar trend of result was found incase of sweet gourd and cucumber on the leaf infestation by red pumpkin beetle, aphid, white fly and leaf eating caterpillar at the growing stages of plant. At the reproductive stage of bottle gourd, sweet gourd and cucumber, the highest number of fruit fly were recorded (14.67, 13.67 and15.67) from T6 (Untreated control), but the lowest number of fruit fly were recorded (2.67, 1.33 and 1.33 respectively) from T2 (Mechanical control method + pheromone trap) at 7 days interval and reduced percent fruit infestation (100, 100 and 100 respectively) over control were estimated. The highest weight of single fruit bottle gourd, sweet gourd and cucumber (1255.00, 1050.00 and 201.00 gm) were recorded in the T5 treated plot, on the other hand the lowest weight of single fruit (1051.67, 898.00 and 109.33 gm) was recorded in the untreated control plot T6. From the research findings it may be concluded that among the treatments, T5 (Cultural + Mechanical control method + Spraying Sevin 85 SP @1.5 g/L of water at 7 days interval) treatment was considered as the best treatment followed by T4 (Mechanical control method +Spraying Sumialpha 5 EC @ 1.0 ml/L of water at 7 days interval) and T3 (Cultural control method + Spraying Suntaf 50SP @ 1.5 g/L of water at 7 days interval) in respect of higher healthy fruit yield by reducing leaf and fruit infestation. A Thesis Submitted to the Faculty of Agriculture Sher-e-Bangla Agricultural University, Dhaka in partial fulfilment of the requirements for the degree of MASTER OF SCIENCE (MS) IN ENTOMOLOGY SEMESTER: JANUARY-JUNE, 2015

2016-06-01T00:00:00Z ALAM, MD. SABUJ http://localhost:8080/handle/123456789/1647 2019-10-01T10:22:45Z 2016-06-01T00:00:00Z

THE EFFECT OF DIFFERENT DOSES OF NITROGEN FERTILIZER (UREA) ON THE INCIDENCE OF SUCKING INSECT PESTS OF RICE ALAM, MD. SABUJ The experiment was conducted in the experimental area of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during the period from April to August 2016, to evaluate the effect of different doses of nitrogen fertilizer (urea) on the incidence of sucking insect pest of rice. BRRI dhan43 were used as the test crop in this experiment. The experiment comprised of the following nitrogen doses as treatment- T1 = Top dressing of Nitrogen fertilizer (urea) @ 50kg/ha at three equal split application; T2 = Top dressing of Nitrogen fertilizer (urea) @ 60kg/ha at three equal split application; T3 = Top dressing of Nitrogen fertilizer (urea) @ 70kg/ha at three equal split application; T4 = Top dressing of Nitrogen fertilizer (urea) @ 80kg/ha at three equal split application; T5 = Top dressing of Nitrogen fertilizer (urea) @ 90kg/ha at three equal split application and T6 = Untreated control. The experiment was laid out in a randomized complete block design (RCBD) with three replications. Data was recorded on insect pest incidence, number of healthy, infested plants, leaf and tillers due to different insect pests and infestation level and also yield contributing characters and yield of BRRI dhan43 from different treatments. It was revealed that 3 common species of sucking insect pests such as brown plant hopper, green leaf hopper and rice bug were found in rice field. Insect populations for 5 selected hills/plot were observed and sucking insect pests e.g., brown plant hopper, green leaf hopper and rice bug were investigated. In case of tillers, leaf and panicle infestation in different crop stages caused by different rice sucking insect pests, the lowest infestation was recorded from T3, whereas the highest infestation was observed from T5. In consideration of yield contributing characters and yield of BRRI dhan43, the maximum number of filled grains/panicle (93.38%) was recorded from T3, while the minimum number of filled grains/panicle (73.36%) from T6. The highest grain yield (4.25 t/ha) was recorded from T3, while the lowest grain yield (1.24 t/ha) was recorded from T6 followed by T5 (2.55t/ha). Among the different nitrogen doses; 70 kg N/ha applied in T3 treatment was superior to other nitrogen doses. A Thesis Submitted to the Faculty of Agriculture Sher-e-Bangla Agricultural University, Dhaka in partial fulfilment of the requirements for the degree of MASTER OF SCIENCE (MS) IN ENTOMOLOGY SEMESTER: JANUARY-JUNE, 2016

2016-06-01T00:00:00Z AKTER, BENJIR http://localhost:8080/handle/123456789/1646 2019-10-01T10:27:56Z 2016-06-01T00:00:00Z

EFFECTIVENESS OF SOME PLANT MATERIALS AGAINST JUTE YELLOW MITE, Polyphagotarsonemus latus ON Corchorus olitorius AKTER, BENJIR In order to study the effectiveness of some plant materials against jute yellow mite, Polyphagotarsonemus latus (Banks) on Corchorus olitorius (O-9897) experiments were conducted in the greenhouse premises and in the field of Bangladesh Jute Research Institute during the period from March to October 2016. In the greenhouse premises, the highest percent mortality 69.39%, 67.77%, 63.86%, 62.43% and 61.47% @ 1:20 were recorded from neem seed kernel extract, mehogony seed extract, pithraj seed extract, turmeric powder extract and green neem leaf extract, respectively. In field experiment, highest percent reduction of infestation over control (70.20%), lowest number of nodes per plant (52.50), highest plant height (3.10 m), and highest percentage of yield increased (38.60%) over control were observed in the plot treated with neem seed kernel extract. In conclusion, neem seed kernel extract, mahogany seed extracts, pithraj seed extract, green neem leaf extract and turmeric powder extract @ 1:20 can be used safely by the farmers as component of Integrated Pest Management (IPM) Program of jute. 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, 2016

2016-06-01T00:00:00Z