DEPARTMENT OF PLANT PATHOLOGY (PLP) http://103.7.193.12:8080/xmlui/handle/123456789/14 2026-07-26T08:19:36Z 2026-07-26T08:19:36Z HUDA, MUHAMMAD SHAMSUL http://103.7.193.12:8080/xmlui/handle/123456789/2160 2026-06-16T07:55:48Z 2019-09-01T00:00:00Z

AN APPROACH OF DEVELOPING PRODUCTION TECHNOLOGY OF DISEASE FREE QUALITY SEED POTATO HUDA, MUHAMMAD SHAMSUL The experiments were conducted at the research field and post graduate laboratory of Plant Pathology Department, HSTU, Dinajpur, during November 2014 to march 2018 to improve the technique of low-cost disease free potato seed production protocol. Farm saved seed was compared with certified seed, positive selection seed, seed plot technique’s seed and TLS seeds potato in 1st experiment. The different seed planting time of 15th October, 4th November, 24th November and 14th December and different Haulm pulling time at 68, 75, 82 and 89 DAP were evaluated in 2nd experiment. The different size of mother seed tuber like S1 = 15 to 25 mm, S2 = 25 to 35 mm, S3 = 35 to 45 mm and S4 = 45 to 55 mm diameter with different concentration of gibberellic acid (GA3) like G00 = 00 ppm, G20 = 20 ppm. G40 = 40 ppm, G60 = 60 ppm were used to evaluate in 3rd experiment. The four different categories of seed potato viz. Minituber, Breeder seed, Foundation seed and Certified seed were used to advance generation in 4th experiment. In the 5th experiment 35 to 45 mm and 35 to 45 mm seed tuber with the haulm pulling at 75, 82, 89, 96 and 103 days after planting (DAP) were evaluated to adjusting haulm pulling time for GA3 treated seed tuber. The maximum yield (27.72 ton/ha) was recorded from Positive Selection’s Seeds which was similar with Certified and Seeds of SPT. But, the maximum plants (≥ 8 %, 7.33 % and 4.17 %) were infected by PVY, PLRV and PMV respectively in Farmer’s seed. 100% emergence was recorded from all planting time except 15 October. Maximum late blight (LB) infestation (2.90%) and LB severity i.e. PDI (21.81) was recorded in planting time of 24th November during 1st week of January 2017. At 60 DAP, maximum potato virus Y infected plants (2.08%) were identified from 24th November planting time which was followed by 4th November. At haulm pulling time, the highest percentage (9.38%) of PMV affected plants was counted from 24 November. The maximum infected plants (PRLV 3.13%, PMV 4.69% and PVY 2.6 %) were recorded from late haulm pulling (89 or 82 DAP). The maximum potato yield (29.23 ton/ha) and seed potato yield (23.87 ton/ha) were recorded from 24 November with HP 89 DAP and 4 November with 82 DAP, respectively. The highest (23.05) branch number of sprouts /tuber were recorded from S4G40. The maximum percentage of potato mosaic virus and potato leaf roll virus was found at G60. The maximum and minimum percentage of potato leaf roll virus was found in S1 and S4. The height (42.67 ton/ha) yield was recorded from S4G60 which was similar with S3G40. In 1st, 2nd and 3rd generation, the maximum 0.46 %, 1.39 % and 5.56% plants were naturally infected by potato virus Y in certified seeds. The minimum 0%, 0% and 0.46% plants were naturally infected by potato virus Y in minituber. Similar results were recorded for PLRV. The infestation of Rhizoctonia canker, common scab and deformed tuber of potato were also increased with increasing generation. In 1st generation, the highest healthy tuber yield (36.58 ton/ha) was recorded from breeder seed. In 2nd and 3rd generation, the highest healthy tuber (36.39 ton /ha and 32.85 ton/ha) was found from progeny of minituber. But increasing generation decrease the healthy tuber yield except minituber (7.06% increase in 2nd generation). The maximum infected plants ((PMV 3.70%, PVY 2.78 % and PRLV 4.32 %,) were recorded from late haulm pulling (103 DAP). The maximum seed potato yield (29.28 ton/ha) was recorded from 96 DAP haulm killing which was similar with 89 and 103 DAP haulm killing. The highest benefit-cost ratio was observed in of 35 - 45 mm mother seed (40 ppm GA3 treated) with haulm pulling at 96 DAP (2.83). For seed potato production, best planting time is 1st week of November and haulm pulling at 75 to 82 DAP in conventional system. But by using 40 ppm GA3 in mother seed tuber with haulm pulling at 89 DAP is suitable and profitable for seed potato production. Farm saved seed should be avoided and increasing generation of seed potato decrease the yield of seed potato. AN APPROACH OF DEVELOPING PRODUCTION TECHNOLOGY OF DISEASE FREE QUALITY SEED POTATO; A DISSERTATION BY MUHAMMAD SHAMSUL HUDA, STUDENT NO. 1405211; DOCTOR OF PHILOSOPHY IN PLANT PATOLOGY, DEPARTMENT OF PLANT PATHOLOGY, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY DINAJPUR, BANGLADESH; SEPTEMBER 2019.

2019-09-01T00:00:00Z ROY, APURBA http://103.7.193.12:8080/xmlui/handle/123456789/2136 2026-05-04T05:48:24Z 2023-12-01T00:00:00Z

EFFECT OF SILICON (SiO2) TO CONTROL BIPOLARIS LEAF BLIGHT AND TO IMPROVE SEED HEALTH STATUS OF WHEAT ROY, APURBA The experiment was conducted in the research field of Hajee Mohammad Danesh Science and Technology University, Dinajpur from December 2022 to April 2023 to evaluate the effectiveness of various doses of silicon dioxide (SiO2) as treatment to control leaf blight (Bipolaris sorokiniana) and to improve seed health status of wheat. In this experiment, three treatments were studied, T1 = Silicon dioxide @60 kg ha-1, T2 = Silicon dioxide @120 kg ha-1, T3= Silicon dioxide @180 kg ha-1. Two varieties were used, V1= BWMRI Gom-1 and V2= BWMRI Gom-2 within three replications and the experiment was set up as Randomized Complete Block Design (RCBD). Bipolaris leaf blight severity, seed health (seed number associated with pathogens and percent germination), plant height, spike length, thousands seed weight, biological yield, yield index and yield were significantly varied with different treatments. Minimum disease severity was recorded from Silicon dioxide @60 kg ha-1 on flag leaves at 67 DAS (2.3%), 72 DAS (6.44%), 77 DAS (6.77%), 82 DAS (8.35%) also on flag-1 leaves at 67 DAS (1.54%), 72 DAS (3.31%), 77 DAS (5.97%) and 82 DAS (11.12%). Minimum disease severity was recorded in BWMRI Gom-1 on flag leaf at 67 DAS (1.90%), 72 DAS (4.55%), 77 DAS (5.69%), 82 DAS (9.01%) and also on flag-1 leaves at 67 DAS (0.67%), 72 DAS (2.15%), 77 DAS (5.68%) and 82 DAS (10.19%). As a treatment variety interaction, the lowest disease severity on flag leaf was recorded from BWMRI Gom-1 with silicon dioxide @60 kg ha-1 interaction at 67 DAS (1.39%), 77 DAS (5.12%), 82 DAS (7.03%) and from BWMRI Gom-1 with Silicon dioxide @120 kg ha-1 interaction at 72 DAS (3.80%). Also the lowest disease severity on flag-1 leaves was recorded from BWMRI Gom-1 with Silicon dioxide @60 kg ha-1 at 67 DAS (0.0%), 72 DAS (1.11%), 77 DAS (3.72%) and 82 DAS (5.92%). As a treatment, minimum seed number was affected with Bipolaris sorokiniana was recorded from Silicon dioxide @60 kg ha-1 (10.13%). As a variety, minimum seed number was affected with Bipolaris sorokiniana was recorded from BWMRI Gom-1 (10.92%). Treatment variety interaction of BWMRI Gom-1 with Silicon dioxide @60 kg ha-1 showed minimum (8.18%) seed number was affected with Bipolaris sorokiniana. Highest grain yield (4.72 t ha-1) was obtained from silicon dioxide @60 kg ha-1. Maximum grain yield (4.36 t ha 1 ) was produced from BWMRI Gom-1. The highest grain yield (4.76 t ha-1) was obtained from the interaction of BWMRI Gom-1 with Silicon dioxide @60 kg ha-1. Finally, the research study concluded that using of BWMRI Gom-1 with the application of Silicon dioxide @60 kg ha-1 can be used effectively with lowest leaf blight disease infestation with better yield. EFFECT OF SILICON (SiO2) TO CONTROL BIPOLARIS LEAF BLIGHT AND TO IMPROVE SEED HEALTH STATUS OF WHEAT; A THESIS BY APURBA ROY, Student ID: 1601138, Thesis Semester: July-December, 2023, Session: 2022-2023; MASTER OF SCIENCE (M.S.) IN PLANT PATHOLOGY, DEPARTMENT OF PLANT PATHOLOGY, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR-5200; DECEMBER, 2023.

2023-12-01T00:00:00Z SHIMU, SHARMIN AFROZ http://103.7.193.12:8080/xmlui/handle/123456789/2112 2026-05-04T05:48:24Z 2023-12-01T00:00:00Z

FORMULATION OF Bacillus cereus HSTUB 17 FOR THE MANAGEMENT OF FUSARIUM WILT OF CHILLI SHIMU, SHARMIN AFROZ Fusarium wilt of chilli caused by Fusarium oxysporum is a devastating disease responsible for huge yield loss in Bangladesh. The present study was aim to formulate a bio-fungicide composed with Bacillus cereus HSTUB 17 for the management of Fusarium wilt of chilli in field conditions as an alternative means of chemical control. Several substrate viz. charcoal, maize bran, wood dust, soybean bran, and pea bran were employed for the formulation. The prepared bio-fungicides were packaged and kept in two distinct storage environments: (A) a refrigerator (40C); (B) a wooden shelve (at room temperature). The initial populations of B. cereus HSTUB 17 with formulated bio-fungicides were counted up to 240 days after incubation at 30-day intervals. The greatest density of spores was reported even 90 days after storage in wood dust-based bio-fungicide. Among all the formulated bio fungicides, wood dust-based bio-fungicide resulted higher reduction of Fusarium wilt incidence (%) and severity (%) (61.36% and 69.01%) (52.01% and 75.21%) in both Roshni and Bijlee plus, respectively. The same bio-fungicide also demonstrated maximum plant height (103.5 and 101.86 cm), highest shoot weight (420 g and 224 g), highest root length (29 and 28 cm), highest root weight (42.82 and 33 g), maximum number of branches/plant (180.90 and 229.29), highest number of fruit per plant (115.90 and 115.13), highest yield per plot ( 2.67 and 2.69 kg/plot), higher accumulation of phenol content (4.56 and 4.81 mg/100g), higher content of total soluble solids (13.77 and 13.23 °Brix), higher amount of antioxidant (9.15 and 8.13 mg/g), and higher amount of chlorophyll content (0.15 and 0.14 mg/mL) both Roshni and Bijlee plus, respectively. The findings of the study revealed the potentiality of the formulated wood dust-based bio-fungicide for the possible to management of Fusarium wilt of chili effectively. FORMULATION OF Bacillus cereus HSTUB 17 FOR THE MANAGEMENT OF FUSARIUM WILT OF CHILLI; A THESIS BY SHARMIN AFROZ SHIMU, Student No: 1701243, Session: 2022-2023; MASTER OF SCIENCE (MS) IN PLANT PATHOLOGY, DEPARTMENT OF PLANT PATHOLOGY, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR-5200; DECEMBER 2023 .

2023-12-01T00:00:00Z http://103.7.193.12:8080/xmlui/handle/123456789/2092 2026-05-04T05:48:24Z 2024-06-01T00:00:00Z

INTEGRATED MANAGEMENT OF FUSARIUM WILT AND COLLAR ROT OF CHICKPEA Wilt and collar rot of chickpea caused by Fusarium oxysporum f. sp. ciceri and Sclerotium rolfsii, respectively is a serious disease responsible for maximum yield loss in Bangladesh. For integrated management of Fusarium wilt and collar rot of chickpea, Trichoderma asperellum HSTUT 1, Neem leaf extract and Autostin 50 WDS were selected. In dual culture, T. asperellum HSTUT 1 inhibited the mycelial growth of F. oxysporum and S. rolfsii by 63.33 and 56.66 %, respectively. Well diffusion assay showed that neem leaf extract and Autostin 50 WDG also inhibited the mycelial growth of F. oxysporum by 38.88, 65.22, 73.00 & 86.66% and S. rolfsii by 35.55, 60.77, 66.33 & 74.88%, respectively over control. In the field conditions, combined application of T. asperellum HSTUT 1, neem extract and Autostin 50 WDG resulted higher reduction of wilt incidence by 9.66, 1.21 & 0.00 % and collar rot incidence by 9.14, 2.33 & 0.00% at 30, 45 and 60 DAS, respectively in comparison to other treatments. Combined application of Trichoderma, neem leaf extract and Autostin 50 WDG also exhibited the highest germination (84.55 & 90.22%), highest shoot length (18.24 & 16.10 cm), highest root length (5.92 & 7.30 cm), highest shoot weight (0.88 & 0.83g), highest root weight (0.32 & 0.32g), highest pod number per plant (26, 49.33), highest nodule number per plant (46.33 & 31.00) and highest yield per plant (4.16 & 7.89g), respectively in Fusarium wilt and collar rot pathogen infected plant. The finding of the present study explored the potentiality of the combination of T. asperellum HSTUT 1, neem leaf extract and Autostin 50 WDG in the eco-friendly management of Fusarium wilt and collar rot of chickpea in field conditions. INTEGRATED MANAGEMENT OF FUSARIUM WILT AND COLLAR ROT OF CHICKPEA; A THESIS BY Student No: 1701314, Session: 2023-2024; MASTER OF SCIENCE (MS) IN PLANT PATHOLOGY, DEPARTMENT OF PLANT PATHOLOGY, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR-5200; JUNE 2024 .

2024-06-01T00:00:00Z