http://localhost:8080/handle/123456789/2717 Sat, 18 Apr 2026 14:23:13 GMT 2026-04-18T14:23:13Z http://localhost:8080/handle/123456789/4305 SCREENING OF RICE VARIETIES (AUS) AGAINST Rhizoctonia solani CAUSING SHEATH BLIGHT OF RlCE AKTER., ROKEYA An experiment was conducted in the field of SAU (Sher-e-Bangla Agricultural University) farm, Dhaka to screen out the resistant varieties of rice against sheath blight (Rhtzoctonia solani kuhn) during Aus season in 2007. Seven rice (Aus) varieties viz. BR3, BR14, BR16, BR2I, BR26 and BRRI dhan 27 were used as treatments. The screening of the varieties were done based on different parameters like disease incidence, disease severity, yield and yield contributing characters. The highest lesion size was recorded in the variety BR16 (4.02 em) and lowest lesion size (3.50 em) was in BRRI dhan 27 at maturity stage. The value of the relative lesion height (%RLH) was large in the susceptible variety and small in the moderately susceptible variety. Among the varieties, BR3, BRi4, BR2I, BR24, BR16 and BR26 were graded as susceptible and BRRI dhan 27 was graded as moderately susceptible to sheath blight. The disease was more severe in advanced growth stages of the plants. The highest grain yield per hectare (3.00 tJha) was recorded in the variety BRRI dhan 27 and the lowest grain yield (1.14 tlha) was recorded in the variety BR24. The highest weight of thousand grains (32.73 gm) was recorded in the variety BRRI dhan 27 and the lowest weight of thousand grains (29.43 gm) was recorded in the variety BR3. BRRI dhan 27 performed better in respect of all the parameters considered against sheath blight of rice. 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 IN PLANT PATHOLOGY Mon, 01 Jan 2007 00:00:00 GMT http://localhost:8080/handle/123456789/4305 2007-01-01T00:00:00Z http://localhost:8080/handle/123456789/236 MANAGEMENT OF CERCOSPORA LEAF SPOT OF MUNGBEAN (Vigna radiata) THROUGH BOTANICALS UDDIN, MD. NASIR The present experiment was conducted for management of Cercospora leaf spot of mungbean through botanicals. The experiment comprised of 7 treatments such as T 1 = Neem leaves extract (1:4 w/v); T = Garlic cloves extract (1:5 w/v); T 3 = Biskatali leaves extract (1:4 w/v); T 2 = Alamanda leaves extract (1:6 w/v); T 5 = Arjun leaves extract (1:4 w/v); T = Debdaru leaves extract (1:5 w/v) and T 7 4 = Untreated (control). The experiment was laid out in Randomized Complete Block Design. Data on disease incidence, severity, yield contributing characters and yield of mungbean were recorded. The highest (13.42% infected plant) disease incidence was recorded in treatment T and the lowest (3.67% infected plant) disease incidence was recorded in treatment T 7 at 60 DAS and the highest (13.65) disease severity was recorded in treatment T 1 and the lowest (4.55) disease severity was recorded in treatment T 2 and T 7 . The highest (13.45) number of inflorescence per plant was recorded in treatment T 3 . The tallest (51.44 cm) plant was recorded in treatment T 1 1 . The maximum number of bunches (8.56), number of pod per plant (26.81), length of pod (8.56 cm), number of seed per pod (12.64) and 1000 seed weight (27.33 g) was recorded in treatment T . The highest 1 6 yield (1.51 kg/plot, 1.26 t/ha) also recorded in treatment T 1 . 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 PLANT PATHOLOGY SEMESTER: JULY-DECEMBER, 2007 Sat, 01 Dec 2007 00:00:00 GMT http://localhost:8080/handle/123456789/236 2007-12-01T00:00:00Z http://localhost:8080/handle/123456789/235 POTENTIALITY OF PLANT EXTRACT IN CONTROLLING LEAF BLIGHT (Bipolaris sorokiniana) OF WHEAT ISLAM, MD. ALAUL Potentiality of plant extract in controlling leaf blight (Bipolaris sorokiniana) of wheat was carried out during the period from june, 2006 to March, 2007. The experiments were conducted in the Seed Health Laboratory, Department of Plant Pathology and in the farm of the Sher-e-Bangla Agricultural University, Dhaka. Primarily 24 plant species were evaluated for their antifungal activity against B. sorokiniana by an invitro test. Among them 13 species were found promising and selected for field evaluation against leaf blight disease. All the plant extracts reduced the incidence of B. sorokiniana over untreated control. The highest reduction was found in case of treating seeds with turmeric rhizome extract. Among the botanicals, durba leaf extract performed the highest percent of healthy seedlings. It has been observed that allamanda leaf extract showed the highest germination and highest vigor index in compare to control. Among the botanicals onion bulb extract treated seeds resulted lowest leaf blight severity in compare to untreated control. Seed treatment with onion bulb extract also showed the best result in producing higher number of spikelets/ear, number of grains/ear, weight of grain/panicle and weight of straw/panicle in compared to untreated control. The treatment T 2 (Onion bulb extract) and T (Allamanda leaf extract) resulted highest grain yield (3.92 g/plot) over untreated control. 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 PLANT PATHOLOGY SEMESTER: JANUARY - DECEMBER, 2007 Sat, 01 Dec 2007 00:00:00 GMT http://localhost:8080/handle/123456789/235 2007-12-01T00:00:00Z http://localhost:8080/handle/123456789/211 MANAGEMENT OF GRAY BLIGHT OF MUSTARD THROUGH SOME SELECTED TREATMENT ALAM, MD. HABIBUL The efficacy of orne selected fungicides and plant extract was evaluated against Alternaria brassicae and Alternaria brassictcola causing gray blight of mustard (var AU Sarisha-I, Brassica campestrtss I~ perirnents were conducted at the Farm of Sher-e-Bangla Agricultural Univer ity, Dhaka and in the laboratory of Regional Agricultural Res earch Station, Bangladesh Agricultural Research In trtute, Rahmatpur, Ban hal during rabi eas on from the month of November, 2006 to February, 2007 Four fungicides viz Rovral 50 WP (0.200)) Dithane M-45 (0.300), Ridomil 68 WP (0.200), Bavisrin OF (0.100) and two plant extracts VIZ Garlic clove extract Allamanda leaf extract were employed in the experiment. Among the fungicides and plant extracts tested, Rovral 50 WP (0 2 0'0) showed the best performance in reducing disease incidence and disea e seventy as well as increasing eed yield against gray blight of mu tard. Seed infection b) Alternaria spp wa reduced by 64 9000 and eed yield wa increased b) 48.1900 over control by the application of Ro ral No prorm mg results \\ ere hown by the rest of the treatment against gray blight of mu lard MASTER OF SCIENCE IN PLANT PATHOLOGY Sat, 01 Dec 2007 00:00:00 GMT http://localhost:8080/handle/123456789/211 2007-12-01T00:00:00Z