http://localhost:8080/handle/123456789/4290 2026-04-18T14:32:55Z 2026-04-18T14:32:55Z DAS, PANNA KANTI http://localhost:8080/handle/123456789/4299 2022-09-22T07:00:12Z 2010-01-01T00:00:00Z

COMPARATIVE PERFORMANCE OF SOME SELECTED ONION CULTIVARS AGAINST stemphylium vesication CAUSING WHITE BLOTCH DISEASE UNDER FIELD CONDITION DAS, PANNA KANTI n experiment was conducted in the Department of Plant Pathology and the field of Sher-e-Bangla Agricultural University (SAU) farm, Dhaka to determined the petformance of some selected cultivers of onion against stemphylium blight disease (Stemphylium vesicariumy during the period from October, 2009 to April, 2010. Nine onion cultivars viz. BARI Peas-I, BARI Peas-2,BAR! Peas-3,Thakurgaon local, Faridpur local, Manikgonj local, Taherpuri Indian big and Indian small were evaluated against the disease.. The petformance were measured on different parameters like disease incidence, disease severity and yield petformance. At seedling stage in net house, no disease incidence were rrecorded in case of BARl Peas-3,Indian big and Indian small, while local cultivars of Faridpur local, Manikgonj local and Thakurgaon local showed disease incidence of 14.33%,13.33% and 13.33% respectively. The lowest disease incidence was found in BARI Peas3, Indian small and Indian big irrespective of different days after transplanting (DAP). The highest disease incidence at 30 DAP, 45 DAP, 60 DAP, 75 DAP, and 90 DAP, were observed in case of local cultivars Taherpuri, Fridpur local, Thakurgaon local and Manikgonj local. The highest yield (12.67 t/ha) was recorded in BARI Peas-3 followed by Indian small (10.33 tlha) and Indian big (9.84 tlha).The lowest yield was found in Taherpuri (4.34 tJha) followed by Faridpur local (4.84 tlha). In case of disease reaction, BARI Peas-3 (9.00%) was performed best followed by Indian small (1l.00%), Indian big (11.33%), and BARl Peas-2 (18.00%) regarding stemphylium blight disease. The local cultivars Taherpuri (37.33%), Faridpur local (37.00%), Thakurgaon local (34.33%), Manikgonj local (34.00%) and BARI Peas-I (26.00%) showed poor petformance. BARI Peas-3 petformed best in respect of all the parameters evaluated against stemphylium blight of onion. 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 (MS) IN PLANT PATHOLOGY

2010-01-01T00:00:00Z AMIN, MD. RUHUL http://localhost:8080/handle/123456789/4298 2022-09-22T06:10:08Z 2010-01-01T00:00:00Z

EFFECT OF SOME SELECTED SEED TREATMENTS ON MAJOR DISEASES AND YIELD ATTRIBUTES OF HYBRID RICE (Var. Taj-l) IN AMAN SEASON AMIN, MD. RUHUL An investigation was carried out to evaluate the efficacy of some selected seed treatments on seed germination, seed borne pathogens, incidence and severity of major field diseases and yield contributing characters of imported hybrid aman rice (Taj-I) in the laboratory of Plant Pathology department and field of Sher-e-Bangla Agricultural University farm during the period from November 2009 to December 2010. Eleven seed treating agents viz. untreated control, sun drying, polythene solarization, brine solution, neem leaf extract, allamanda leaf extract, hot water treatment, Provax 200, Bavistin 50 WP, Dithane M 45 and Trichoderma harzianum were evaluated for their effect on seed germination and incidence of seed borne pathogens in vitro as well as disease incidence and severity at 3 stages and on yield contributing characters in vivo. Nine seed borne pathogens namely bacteria (unidentified), Rhizopus stolonifer, Aspergillus spp., Fusarium moniliforme, Phoma sp., Bipolaris oryzae, Curvularia lunata, Penicillium sp. and Alternaria tenuissima were recorded and identified in blotter and agar plate method of seed health study. In blotter and . agar plate method the highest ·seed germination (94.60%) and (91.45%), respectively were recorded under Dithane M 45 and the lowest (77.31 %) and (78.32%) were recorded under untreated control. The highest pathogen incidence was observed under untreated control and all the treatments significantly reduced the pathogen incidence except polythene solarization and sun drying treated seed. Dithane M. 45, Bavistin 50 WP, Provax 200 and hot water treatment showed the best performance in reducing seed borne pathogen incidence in both the methods of seed health testing. Five field diseases viz. brown spot (Bipolaris oryzae), narrow brown spot (Cercospora oryzae), leaf blast (Pyricularia grisea), BLB (Xanthomonas campestris pv. oryzae), and sheath blight (Rhizoctonia solani) were recorded and identified. The disease incidence and severity of brown spot at maturity stage were recorded from 5.48% to 13.89% and 0.91 to 1.67 (0-9 scale), respectively where Dithane M 45, Bavistin 50 WP and Provax 200 showed good performance against the disease. In case of leaf blast, the disease incidence and severity ranged from 5.96% to 16.11% and 2.63 to 5.86 (0-9 scale), respectively at maturity stage where hot water treatment showed the lowest incidence (5.96%) and severity (2.63). Disease incidence and severity of sheath blight varied from 15.87% to 20.30% and 6.47 to 7.80 (0-9 scale), respectively at maturity stage where hot water treatment showed the best result against the disease. Provax 200 was also effective followed by hot water treatment. In case of BLB, the disease incidence and severity ranged from 13.62% to 23.20% and 5.64 to 8.29 (0-9 scale), respectively at maturity stage where none but hot water treatment was effective against the disease. In case of narrow brown leaf spot, the disease incidence and severity ranged from 1.49% to 7.79% and 0.63 to 3.44 (0-9 scale), respectively at maturity stage where three fungicides and hot water treatment effectively managed the disease.The highest growth and yield contributing characters were recorded under the fungicidal seed treatment followed by hot water treatment considering plant height, panicle length, effective panicle and filled grain. Grain yield ranged from 7.27 t/ha to 10.40 tfha. Under different treatments, the highest grain yield (10.40 t/ha) was recorded under Dithane M 45 followed by Bavistin 50 WP and Provax 200. The lowest grain yield (7.27 t/ha) was found under polythene solarization which was statistically identical with untreated control. It was observed that disease incidence and severity was gradually increased from flowering stage to maturity stage with the age of the plant and minimum incidence and severity gave the maximum yield. 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 (MS) IN PLANT PATHOLOGY

2010-01-01T00:00:00Z KIBRIA, MD. GOLAM http://localhost:8080/handle/123456789/4297 2022-09-22T06:07:34Z 2010-01-01T00:00:00Z

SCREENING OF DIFFERENT ONION VARIETIES AGAINST "Alternaria porri" CAUSING PURPLE BLOTCH DISEASE KIBRIA, MD. GOLAM An experiment was conducted in the field of SAU (Sher-e-Bangla Agricultural University) farm, Dhaka to screen out the resistant cultivars of onion against purple blotch disease (Alternaria porn) during the period from October, 2009 to April, 2010. Nine onion cultivars viz. BARI Peas-I, BARl Peas-2, BARl Peas-3, Thakurgaon local, Faridpur local, Indian big, Manikgonj local, Taherpuri and Indian small were used as treatments. The screening of the varieties was done based on different parameters like disease incidence, disease severity and yield performance. The lowest disease incidence at 30 DAP, 45 DAP, 60 DAP, and 90 DAP respectively were found in BARI Peas-3, Indian small and Indian big with some extent. The highest disease incidence at 30 DAP, 45 DAP, 60 DAP, 75 DAP, and 90 DAP, were observed in case of local cultivars Taherpuri, Fridpur local, Thakurgaon local and Manikgonj local. The highest yield 12.67 t/ha was obtained from BARI Peas-3 followed by Indian small 10.33 t/ha and Indian big 9.84 t/ha. The lowest yield 4.34 t/ha was harvested from Taherpuri followed by Faridpur local 4.84 t/ha. In case of disease reaction 8.00% observed in BARI Peas-3 was graded as resistant followed by Indian small 10.00%, Indian big 1I .00%, and 18.67% on BARI Peas-2 this cluster ranked as moderately resistant against Purple blotch . The local cultivars Taherpuri 37.67%, Faridpur local 35.00%, Thakurgaon local 34.33%, Manikgonj local 34.00% and BARI Peas-l (25.00%) were graded as susceptible. BAR! Peas-3 performed best in respect of all the parameters considered against Purple blotch of onion. 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 (MS) IN PLANT PATHOLOGY

2010-01-01T00:00:00Z BHUIYAN, MD. ZIAUR RAHMAN http://localhost:8080/handle/123456789/4296 2022-09-22T06:00:58Z 2010-01-01T00:00:00Z

INTEGRATED APPROACH FOR MANAGEMENT OF RHIZOME ROT OF GINGER CAUSED BY Fusarium oxysporum BHUIYAN, MD. ZIAUR RAHMAN An experiment was conducted at Sheree-Bangia Agricultural University on integrated approach for management of rhizome rot of ginger caused by Fusarium oxysporum during 15 March'2011 to February 2012. There were sixteen treatments used including untreated control such as Bavistin 50WP, Poultry waste + Ridiomil gold MZ 72, Poultry waste+ neem leaf extract, Saw dusts + alamanda leaf extract, Poultry waste+ Bavistin 50WP, Saw dusts+ neem leaf extract, Trichoderma harzianum, Poultry waste, Saw dusts+ Ridomil gold MZ 72, Poultry waste+ alamanda leaf extract, Saw dusts, Saw dusts+ Bavistin 50WP, Ridomil gold MZ 72, neem leaf extract, alamanda leaf extract. Rhizomes were treated with Bavistin 50WP, Ridomil gold, neem leaf extract, alamanda leaf extract and Trichoderma harzianum. Poultry waste and saw dusts were applied in the plot during land preparation. The lowest disease incidence (2.77%) and the highest reduction of disease incidence (95.66%) over untreated control were counted in Poultry waste+Bavistin 50WP followed by Poultry waste+Ridomilgold MZ 72), Poultry waste + Alamanda leaf extract, at 240 DAP. The highest disease incidence (63.88%) was recorded in untreated control. The lowest disease severity (8.23%) and the highest reduction of disease severity (84.62%) over control was recorded at 240 DAP in Poultry waste+Bavistin 50WP followed by Poultry waste+alamanda leaf extract. The highest number of tillers (60) per hill, the highest plant height (65.20 ern) per plot, the highest weight (3039 g) of the healthy rhizome per plot and the lowest weight (307.3 g) of infected rhizome per plot was recorded in case of Poultry waste+Bavistin 50WP. The highest rhizome yield (16.73 tlha) was achieved in Poultry waste+Bavistin 50WP which was 172.92% increased over the untreated control followed by Til (16.24 t/ha). Poultry waste+a1amanda leaf extract was also showed better yield (16.24t1ha) Performance, 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 (MS) IN PLANT PATHOLOGY

2010-01-01T00:00:00Z