Browsing by Author "Bhagat, Indramani"

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Open Access
Integrated management of seedling blight disease of tea caused by Sclerotium rolfsi
(University of North Bengal, 2015-03) Bhagat, Indramani; Chakraborty, Bishwanath
Tea is one of the important plantation crops in Nepal. One of the important fungal pathogens Sclerotium rolfsii, causing seedling blight disease in tea was found to be predominant in the nursery grown plants. The art and science of plant disease control has moved in the direction of biological control of plant pathogen is a distinct possibility for the future and can be successfully exploited in modern agriculture, especially within the framework of integrated disease management systems. Effective integrated management practices against S. rolfsii were developed using neem cake, oil cake, aqueous leaf extract of Azadirachta indica, bio-control agent like Trichoderma harzianum and calixin (0.1 vi%) in vivo. Combination with cow dung, neem cake, oil cake, chicken manure and rabbit manure, disease reduction were insignificant. However, combination with neem cake and oil cake showed 66.4% disease incidence, whereas in oil cake, neem cake and Azadirachta indica in combination disease incidence were recorded 11.1%. Under pot culture conditions T. harzianum alone and in combination with neem cake, oil cake and Azadirachta indica provided best effective management practices of seedling blight in all the three modes of application viz., simultaneous, repeated and post infection.
Open Access
Management of Fusarium wilt of tomato caused by Fusarium oxysporum f sp. lycopersici
(University of North Bengal, 2019-03) Bhagat, Indramani
Fusarium wilt of tomato (Lycopersicum esculentum Miller) caused by Fusarium oxysporum f sp. lycopersici is one of the most destructive diseases in tomato throughout the world. Effective and efficient management of the crop disease is generally achieved by the use of synthetic pesticides. These pesticides cause deleterious effects on human health and biosphere. Amendments (Neem cake, oil cake, cow dung, rabbit manure and chicken manure) were used in tomato seedlings to observe growth promotion increase in healthy and treated tomato seedlings of two varieties, Shrijana and Patam. Results revealed that growth of the tomato seedlings was significantly increased following amendment with neem cake and oil cake in the treated Fusarium oxysporum f sp. lycopersici inoculated plants than in untreated uninoculated plants as recorded. Oil cake had better effect than neem cake manure. It has been observed that the growth of tomato seedlings increased in untreated inoculated than treated inoculated tomato seedlings. Among cow dung, rabbit manure and chicken manure, chicken manure gave better growth of tomato seedlings than that of rabbit manure and cow dung. Similarly effective integrated management practices against Fusarium oxysporum f sp. lycopersici were also developed using neem cake, oil cake, aqueous bulb extract of Allium sativum, bio-control agent like Trichoderma harzianum and calixin (0.0125%) in vivo. Combination with cow dung, neem cake, oil cake, chicken manure and rabbit manure, disease reduction were insignificant. However, combination with neem cake and oil cake showed 64.4% disease incidence, whereas in oil cake, neem cake and Allium sativum in combination disease incidence were recorded 10.1%. Under pot culture conditions T. harzianum alone and in combination with neem cake, oil cake and Allium sativum provided best effective management practices of Fusarium wilt in all the three modes of application viz., simultaneous, repeated and post infection.
Open Access
Studies on sclerotial of tea and its management
(University of North Bengal, 2006) Bhagat, Indramani; Chakraboty, Biswanath