http://localhost:8080/handle/123456789/4971 Sat, 18 Apr 2026 14:12:49 GMT 2026-04-18T14:12:49Z http://localhost:8080/handle/123456789/4984 MANAGEMENT OF FUSARIUM WILT OF BRINJAL (Fusarium oxysporum f. sp. melongenae) BY USING DIFFERENT ORGANIC AMENDMENTS MAUYA, JANNATUL A field experiment was conducted in the central farm of Sher-e-Bangla Agricultural University and lab experiment was conducted in the lab of Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka during the period from September 2021 to April, 2022. The study was carried out to evaluate the effect of selected treatments viz. T 0 = Control ; T 1 = Spent Mushroom Substrate (SMS) ; T 2 = Vermicompost ; T 3 = Poultry manure; T 4 = Biochar ; T 5 = Spent Mushroom Substrate + Biochar ; T 6 = Spent Mushroom Substrate + Poultry manure ; T 7 = Spent Mushroom Substrate + Vermicompost for the management of Fusarium wilt of brinjal. In response to different selected treatments, yield and yield attributes were recorded. On the basis of visible symptoms infected plants and percent disease incidence were also recorded. The lowest disease incidence was found in T 5 (Spent Mushroom Substrate + Biochar) followed by T 6 (Spent Mushroom Substrate + Poultry manure) and the highest disease incidence was found in T 0 . The effect of different treatments on yield and yield contributing characters also studied and significance variation was observed. For yield contributing characters the lowest result was found in untreated control T 0 and the highest result was found in T 5 which was statistically similar with T 6 .In response to different selected treatments for yield, the highest performances was observed where Spent Mushroom Substrate + Biochar was used. From the findings of the present study, it may be concluded that Spent Mushroom Substrate + Biochar and Spent Mushroom Substrate + Poultry manure can be used as ecofriendly approach for the management of fusarium wilt of brinjal. However, further investigation is needed to justify the present findings. 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 Sat, 01 Jan 2022 00:00:00 GMT http://localhost:8080/handle/123456789/4984 2022-01-01T00:00:00Z http://localhost:8080/handle/123456789/4983 MORPHOLOGICAL AND MOLECULAR IDENTIFICATION OF MYCOFLORA ASSOCIATED WITH SELECTED SPAWN SUBSTRATES AND ITS EFFECT ON YIELD OF OYSTER MUSHROOM (Pleurotus florida) TONU, RESHMA AKTER An experiment was conducted to identify and characterize contaminants associated with the substrates of oyster mushrooms (Pleurotus florida) based on morphological and molecular characteristics, to assess the degree of contamination of various oyster mushroom substrates and to determine the effect of mycoflora on the growth and yield-contributing traits of Pleurotus florida. Five different types of mushroom substrates, including rice straw, sugarcane bagasse, waste paper, grass (Cynodon dactylon) and banana leaves were used for this purpose. By morphological and molecular analysis, three fungi were isolated and identified from mushroom substrates. These were Exophiala spinifera, Trichoderma asperellum, and Rhizopus sp. Among these fungal isolates, the DNA sequence of Trichoderma asperellum and Exophiala spinifera were detected by Basic Local Alignment Search Tool (BLAST) with the help of NCBI. DNA sequence of Exophiala spinifera and Trichoderma asperellum were matched by 99.83% (ITS1) and 100% (ITS4)as well as 65.60% (ITS1) and 99.50% ( ITS4) with the nucleotide sequence of NCBI gene bank, respectively. Among the five mushroom substrates, waste paper showed the highest mycelium growth rate (0.48 cm), while banana leaves showed the lowest growth rate (0.41 cm). For mycelium running completion, sugarcane bagasse required the longest period of time (15.8 days), whereas waste paper required the shortest period of time (12.3 days). The maximum number of primordia (37.9), effective fruiting bodies (17.5), the highest biological yield (144.2 g), economical yield (113.3g) and biological efficiency (24.84%) per spawn packet were recorded from waste paper, while the minimum number of primordia (30.9), effective fruiting bodies (12), biological yield (119.7 g), economical yield (86.2 g) and biological efficiency (23.94%) were recorded in banana leaves. The maximum pileus diameter (5.03 cm) and stipe length (2.84 cm) were recorded from grass (Cynodon dactylon) whereas the minimum pileus diameter (3.61 cm) and stipe length (2.26 cm) were found in banana leaves. The maximum contamination severity was recorded in banana leaves (6.8%) whereas waste paper had the minimum level of contamination (0.4%). Among the selected substrates, waste paper showed the best performance in case of growth rate, mycelium running completion, yield and yield contributing characters. A Thesis Submitted to the Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka in partial fulfillment of the requirements or the degree of CAUSED BY Alternaria spp. MASTER OF SCIENCE (MS) IN PLANT PATHOLOGY Sat, 01 Jan 2022 00:00:00 GMT http://localhost:8080/handle/123456789/4983 2022-01-01T00:00:00Z http://localhost:8080/handle/123456789/4982 IN VITRO EVALUATION OF TEBUCONAZOLE ON Magnaporthe oryzae triticum TO CONTROL BLAST OF WHEAT: IN PROCESSES OF REACTIVE OXYGEN SPECIES GENERATION AND ANTIOXIDANT DEFENSE RESPONSES JERIN, JAFRIN JAHAN Blast is an important disease of wheat that significantly reduces the plant growth and productivity. Proper management can ameliorate dysfunction in and improve the plant growth and productivity. Therefore, the present study was conducted to explore the protective role of the tebuconazole fungicide in helping wheat seedlings to tolerate blast disease. Ten-day-old hydroponically grown seedlings were allowed to inoculation of Magnaporthe oryzae triticum (MoT) spore suspension and with the tebuconazole fungicides (0.3 g L −1 ) for the next six days. The inoculation of MoT spore suspension deteriorated the growth of the wheat seedlings by increasing the number of infected plant and leaf lesions. Among the varieties, lower blast symptom was observed in BARI Gom 33 (V2P) compared to BARI Gom 26 (V1P). The malondialdehyde (MDA) content increased by 102.80 and 163.96% in BARI Gom 26 and BARI Gom 33, respectively compared to control. Shoot and root electrolyte leakage also increased by MoT inoculation. Therefore, the level of H also increased that observed in histochemical detection. The infection of blast disease, relative water content decreased by 50.18 and 51.26% in BARI Gom 26 and BARI Gom 33, respectively compared to control plant. Photosynthetic pigment such as Chl a, Chl b, Chl (a+b), and carotenoid contents also reduced by blast infection. Thus the growth and biomass of wheat seedlings were decreased. However, tebuconazole fungicide reduced the oxidative damage by reducing MDA, electrolyte leakage, H 2 O 2 and O 2 •− production. Therefore, improved relative water content and photosynthetic pigments as well as improved the growth and biomass of wheat seedlings. These results indicate the exogenous application of tebuconazole fungicide is a promising approach to improve blast tolerance in wheat plants. Further investigation is needed under field conditions to determine the blast-tolerance induced by tebuconazole fungicide application A Thesis Submitted to the Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka in partial fulfillment of the requirements or the degree of CAUSED BY Alternaria spp. MASTER OF SCIENCE (MS) IN PLANT PATHOLOGY Sat, 01 Jan 2022 00:00:00 GMT http://localhost:8080/handle/123456789/4982 2022-01-01T00:00:00Z http://localhost:8080/handle/123456789/4981 MANAGEMENT OF ALTERNARIA LEAF SPOT OF CABBAGE THROUGH SELECTED FUNGICIDES, SPENT MUSHROOM SUBSTRATE AND THEIR COMBINATION PATWARY, REAJ RAHMAN An field experiment was conducted in the experimental field of Sher-e-Bangla Agricultural University for the management of Alternaria leaf spot of cabbage (Brassica oleraceae) through the combination of spent mushroom substrate and some selected fungicides during Rabi season (November, 2021 to March, 2022). The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The experimental treatments were T 0 : Control (No treatment); T 1 : Spent mushroom substrate (SMS) @ 15 t ha -1 ; T 2 : Rovral 50 WP @ 2.0 ml/L of water; T 3 : Kurenox 50 WG @ 2.5 g/L of water; T 4 : Knowin 50 WP @ 20 g/L of water; T 5 : Mancer 75 WP @ 2g/L of water; T 6 : Spent mushroom substrate @ 15 t ha -1 + Rovral 50 WP @ 2.0 ml/L of water; T 7 : Spent mushroom substrate @ 15 t ha -1 + Mancer 75 WP @ 2g/L of water; T 8 : Spent mushroom substrate @ 15 t ha -1 + Kurenox 50 WG @ 2.5 g/L of water; T 9 : Spent mushroom substrate @ 15 t ha -1 + Knowin 50 WP @ 20 g/L of water. Treatment T 6 combined with soil amendment with spent mushroom substate followed by spraying with Rovral 50 wp (0.2%) at 7 days interval showed the best performances reducing leaf infection, plant infection head infection by 52.19 %, 47.49% and 100% respectively while the leaf infection, plant infection head infection respectively were 33.86%, 48.66% and 0.0% respectively. Treatment severity of plant by 35.97% while the severity index was recorded 19.94%. Treatment yielded the highest plant height (21.79cm), diameter of cabbage head (21.38 cm), weight of cabbage head (2.26kg plant) increasing the cabbage yield by 58.34% over control. As per the performances of the treatments against the disease, the efficacy were ranked as control ( T 0). T 6< T 9< T 2< T 8< T 4< T 6 reduces the T 3< T 6 also T 5< T 1 as A Thesis Submitted to the Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka in partial fulfillment of the requirements or the degree of CAUSED BY Alternaria spp. MASTER OF SCIENCE (MS) IN PLANT PATHOLOGY Sat, 01 Jan 2022 00:00:00 GMT http://localhost:8080/handle/123456789/4981 2022-01-01T00:00:00Z