http://localhost:8080/handle/123456789/2756 2026-04-18T21:36:26Z http://localhost:8080/handle/123456789/1255 MANAGEMENT OF SUCKING INSECT PESTSON MUNGBEAN AND ITS IMPACT ON THE INCIDENCE OF MOSAIC DISEASE HOSSAIN, MD. AKRAM The experiment was conducted at the research field of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during the period from April to November, 2011 to manage the sucking insects of mungbean and observe its impact on incidence of mosaic disease. The mungbean variety, BARI mung 4 was grown in the field and seven treatments viz., Ripcord 10EC, Actara 25WG, Marshal 20EC, Malathion 57EC, Neem oil, Tamarind Fruit extract and an untreated control were set in randomized complete block design (RCBD) with four replications. Insecticides, Neem oil and Tamarind Fruit extract were applied at 7 days interval. Whitefly, jassid, aphid and white leaf hooper were found as sucking insects and whitefly was the most abundant in mungbean field. The lowest population of aphid, jassid, whitefly and white leafhopper (6.65, 3.05, 6.58 and 6.58 plant-1 respectively) was found in Marshal 20EC treated plot which showed maximum percent reduction of sucking insects. The percent mosaic infested plant was found lowest in the same treatment. Marshal also produced the maximum plant height (90.25 cm), number of seeds pod-1 (8.25), 1000-seed weight (35.50 g) and gave highest yield (566.50 g plot-1) of mungbean. Neem oil showed the intermediate results considering all the parameters. The results of present study indicate that the Marshal 20EC was the most effective treatment against sucking insects and mosaic infection of mungbean. 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, 2010 2010-12-01T00:00:00Z http://localhost:8080/handle/123456789/1254 DETERMINATION OF THE EFFECTIVENESS OF DIFFERENT DOSES OF NEEM PRODUCTS AND TWO BIO-CONTROL AGENTS FOR COMBATING CHICKPEA POD BORER Helicoverpa armigera (Hubner) AHMED, SABBIR A study was conducted at the Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, Bangladesh during the period from November, 2009 to March, 2010 to evaluate the effectiveness of different doses of neem products and bio-control agents on the basis of infestation level of chickpea pod borer (Helicoverpa armigera) on chickpea pods, variety BARI Chola-5. The experiment comprised of 7 treatments as T1: Neem oil @ 3 ml/L of water at 7 days interval, T2: Neem oil @ 5 m1/L of water at 7 days interval, T3: Neem seed kernel @ 20 g/L of water at 7 interval, T4: Neem seed kernel @ 30 g/L of water at 7 interval, T5: Trichogramma evanescense @ 0.5 gm/6m2 at 7 days interval, T6: Bacillus thuringiensis serovar kurstaki @ 1.5 ml/L of water at 7 days interval and T7: Untreated control. The plants treated with T2 treatment resulted significantly lowest pod infestation compared to those of other treatments during early, mid and late fruiting stage. Significantly the highest yield was also obtained from the treatment T2. The treatments T4 and T1 also yielded more or less similar result as in treatment T2. The yield contributing characters were found highest in T2 treatment for longest plant, branches plant-1, leaves plant-1, pods plant-1, pod length and number of seeds pod-1. The highest BCR was found in the treatment T2 may be due to the minimum infestation and cost compared to the other treatment components and the highest yield was produced in this treatment. The percentage of infestation of chickpea pod gradually increased from early fruiting stage to late fruiting stage by number and weight. Therefore, any control measure taken from pod initiation to harvest might be effective for controlling pod borer of chickpea. 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, 2010 2010-06-01T00:00:00Z http://localhost:8080/handle/123456789/1253 EVALUATION OF SOME SELECTED BOTANICALS AND CHEMICAL INSECTICIDES FOR THE MANAGEMENT OF BRINJAL SHOOT AND FRUIT BORER (Leucinodesorbonalis Guenee.) PARVEZ, MAHMUD-AL An experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University (SAU), Sher-e Bangla Nagar, Dhaka, to evaluate of some botanicals and chemical insecticides for the management of brinjal shoot and fruit borer (Leucinodes orbonalis Guenee.) during October, 2009 to April, 2010. The experiment comprised seven (7) treatments viz. (i) T1= Application of Mehogoni oil @ 5ml/L of water, (ii) T2 = Application of Mehogoni oil @ 3ml/L of water, (iii) T3 = Application of Neem oil @ 5ml/L of water, (iv) T4= Application of Neem oil @ 3ml/L of water, (v) T5= Application of Marshal 20 EC @ 2ml/L of water, (vi) T6= Application of Ripcord 10 EC @ 1ml/L of water and (vii) T7= Untreated control. Each application was done at 28 days after transplanting and repeated at 7days interval. The experiment was set up in Randomized Complete Block Design with three replications. Data on different growth and yield parameters were recorded and analyzed statistically. Results under the present experiment represented that the lowest shoot infestation (3.82%), lowest fruit infestation by number (12.29%) and by weight (8.73%), maximum total fruit yield (31.89 t/ha), lowest infested fruit yield (2.78 t/ha), highest healthy fruit yield (29.11 t/ha), highest fruit length (28.03cm), girth of fruit (12.82cm) and weight of edible portion of infested fruit (152.36 g), highest adjusted net return (Tk. 402540.00) and highest BCR (11.45) were achieved by Marshal 20EC @ 2ml/L of water at 28 days after transplanting and repeated 7 days interval (T5) compared to all other treatments. The highest percent reduction of shoot infestation (72.18%), the highest percent (%) reduction of fruit infestation by number (62.02%) and by weight (72.12%), percent (%) increase of total yield (58.03%), maximum reduction of infested fruit yield (72.14%), maximum increase of healthy fruit yield (185.39%), highest percent (%) increase of fruit length (18.57%), girth of fruit (27.69%) and weight of edible portion per infested fruit (129.67%) over control were also achieved by Marshal 20EC @ 2ml/L of water at 28 days after transplanting and repeated 7 days interval (T5). Thus it is said that among the treatments T5 (Application of Marshal 20 EC @ 2ml/L of water after water 28 days after transplanting and repeated at 7days interval) showed the best performance for controlling brinjal shoot and fruit borer. Athesis 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 SEMISTER: JANUARY-JUNE, 2010 2010-06-01T00:00:00Z http://localhost:8080/handle/123456789/1252 EFFECT OF INTERCROPPING ON THE INSECT PEST INFESTATION AND THEIR NATURAL ENEMIES OF CABBAGE RAHMAN, MD. SHAHIDUR A field experiment was carried out at research farm of Sher-e-Bangla Agricultural University to find out the effect of intercropping on the insect pest infestation of cabbage. The crop combinations were cabbage ± garlic, cabbage + radhuni. cabbage + mouri, cabbage + methi. cabbage + kalizira, cabbage + coriander. cabbage + onion and sole cabbage. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The lowest number of insect pest (0.03. 0.12, 0.32, 0.60,1.20, 1.59, 2.15, 2.41 and 3.00 at 15, 22, 29. 36, 43, 50, 57. 64 and 71 DAT, respectively) and highest infestation reduction over control (97.89, 92.281 83.08, 75.68, 66.40, 62.61, 56.20, 54.75 and 55.40 at 15, 22, 29, 36, 43, 50. 57, 64 and 71 DAT, respectively), The highest number of natural enemy (0.98, 1.41. 1.75 and 2.18 at 50, 57. 64 and 71 DAT, respectively), lowest number of insect pest family (2.21) and highest reduction over control (69.07%). The highest number of natural enemies (2.85) and The highest increase over control (64.29%) were achieved by Cabbage + garlic intercropping system. The highest cabbage yield (63.29 riha). relative yield (1.08 t/ha) and cabbage equivalent yield (63.50 t/ha) were obtained in Cabbage + garlic intercropping system. The highest gross return (Tk. 305160.00/ha) was recorded from the Cabbage + garlic intercropping system. Considering the results of the present study, cabbage + garlic intercropping system showed the best performance in respect of reducing insect pest and increasing natural enemies, relative yield, cabbage equivalent yield and gross return. A thesis Submitted to the Faculty of Agriculture, Sher-e-Bangla Agricultural University. Dhaka in partial ftulIillrnent oldie requirements for the degree of MASTER OF SCIENCE IN ENTOMOLOGY SEMESTER: JULY-DECEMBER, 2010 2010-12-01T00:00:00Z