http://localhost:8080/handle/123456789/2721 2026-04-18T14:14:13Z http://localhost:8080/handle/123456789/2875 EFFICACY OF DIFFERENT MICROBIAL ANTAGONISTS IN CONTROLING FUSARIUM WILT OF TOMATO SARKER, MD. A. MATIN The experiment was conducted in the Disease Diagnostic Laboratory and Net house of Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka during the period of July 2011-June 2012 to search suitable antagonistic microorganism against Fusarium oxysporum f. sp. lycopersici causing Fusarium wilt of tomato.Twenty probable antagonistic bacterial isolates were isolated from rhizosphere soil and screening was done against F. oxysporum f. sp. lycopersici to detect the promising antagonistic microorganism. One antagonistic fungal isolate Trichoderma harzianum also collected from laboratory of Bangladesh Agricultural Research Institute (BARI), Gazipur and assayed as antagonist against F. oxysporum f. sp. lycopersici. Out of twenty bacterial isolates, only four isolates (Iso-1, Iso-2, Iso-3 and Iso-4) were found effective in dual culture method. Out of all test organisms, Trichoderma harzianum produced the highest percent inhibition zone (75.75 %) and the lowest percent inhibition zone (28.39 %) was produced by Iso-2. In blotter method, the highest prevalence of Fusarium oxysporum was observed in control (11.25%) while the lowest was in Iso-1 (0.58%). In pot culture, the efficacy of microbial antagonist in controlling Fusarium wilt of tomato was done by root dipping and soil drenching method. The highest disease incidence was observed in control (40% in 20 DAT and 60% in 30 DAT) and the lowest was observed in Iso-1 and T. harzianum (0% in 20 DAT, 10% in 60 DAT). Disease severity was also the lowest (PDI 0.00% in both 10 DAT and 20 DAT and 3.33% in 60 DAT) in Iso-1. Thus Iso-1 can be used as a bio-control agent against F. oxysporum f. sp. lycopersici causing wilt of tomato. A Thesis Submitted to the faculty of Agriculture Sher-e-Bangla Agriculture University, Dhaka in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN PLANT PATHOLOGY SEMESTER: JULY-DECEMBER, 2010 2012-06-01T00:00:00Z http://localhost:8080/handle/123456789/83 YIELD LOSS ASSESSMENT OF MUSTARD FOR GREY BLIGHT DISEASE CAUSED BY Alternaria spp. HAQUE, MD. GAZIUL The experiment was conducted in the farm of Sher-e-Bangla Agricultural University and in the Seed Health Laboratory Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka-1207 during the period from November 2011 to July 2012. Multiple treatments viz. T 2 1 4 3 5 8 7 6 10 10 where 9 spraying were done with Rovral 50 WP @ 0.2%. The highest PDI 9 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, 2012 2012-12-01T00:00:00Z http://localhost:8080/handle/123456789/82 THE EFFECTS OF BIOCONTROL FUNGUS, Paecilomyces lilacinus AND FOSTHIAZATE ON ROOT KNOT SHAMMI, JEBUNNESA ABSTRACT The fungal biocontrol agent Paecilomyces lilacinus and chemical nematicide fosthiazate were evaluated to asses biocontrol potency of P lilacinus against root knot nematode Meloidogyne spp. in eggplant. The treatments were biocontrol fungus P. lilacinus, P. lilacinus + Fosthiazate, Fosthiazate, blank control parameters the effect of chemical nematicide and nematicide biocontrol fungus combinations the result was statistically similar. So P. lilacinus may be useful either alone or in combination with fosthiazate to reduce the doses of chemical nematicide in controlling root knot nematode. Meloidogyne spp with increasing growth parameters of eggplant. P lilacinus is compatible with Fosthiazate. 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-JUNE, 2012 2012-12-01T00:00:00Z http://localhost:8080/handle/123456789/81 IMPACT OF PAECILOMYCES LILACINUS APPLICATION TIME ON PLANT GROWTH AND SUPPRESSION OF ROOT KNOT NEMATODE MITU, AFROGA ISLAM Experiments were carried out to study the effect of Paecilomyces lilacinus application time on plant growth and suppression of root knot nematode, Meloidogyne incognita in brinjal P 7 spore/plant by mixing with the pot soil where M. incognita was inoculated @ 10,000 eggs/plant. Two months after transplantation, the data on plant growth parameters, root knot index P +M . The fresh weight of root P M 7DAP P . The shoot length . The gall index, egg masses/root, eggs/egg mass and reproduction factor of the treatment PL P P +M P were reduced 77.38, 88.29, 68.73 and 86.29% over M in brinjal variety singnath. Similar type of results were also recorded in brinjal variety khotkhotia, tomato variety BARI Tomato 14 and P P P PL P +M M P P 7DAP 7DAP 7DBP M P cucumber variety Kashinda. The treatment PL 7DBP M P 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, 2012 2012-12-01T00:00:00Z