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All Journal Asia Pacific Journal of Sustainable Agriculture, Food and Energy (APJSAFE)
Amitava Basu
Bidhan Chandra Krishi Viswavidyalaya, West Bengal,India
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Energy Environmental Science

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Seasonal incidence of foliar diseases of Cowpea (Vigna unguiculata L.Walp) and their eco-friendly management through shifting of planting time Roy, Sanchari; Basu, Amitava
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol. 9 No. 1 (2021): June 2021
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36782/apjsafe.v9i1.85

Abstract

A thorough study was conducted on foliar diseases of cowpea under widely cultivated cowpea producing areas of Nadia & Hooghly district of West Bengal. The areas were Mondouri, Jaguli Instructional farm, Muragacha, Rajberia, Chakdaha, Madanpur, Basantapur, Kalyani Incheck farm, Kalyani “C” block farm under Nadia district and Mogra under Hooghly district. The fixed plot survey was conducted during Pre-kharif, Kharif & Rabi season. Seven fungus has been isolated during survey period and these are- Alternaria alternata, Colletotrichum capsici, Corynespora cassicola, Fusarium ciceri, Rhizoctonia solani, Sclerotium rolfsii, Curvularialunata. Among these pathogens, Alternaria alternata, Colletotrichum capsici,Corynesporacassicola found to be most dominating pathogen during Pre-Kharif, Kharif & Rabi season respectively.Shifting of planting time was carried out for avoiding the plant pathogen at a particular growth stage of the crop. Five cultivars (Kashikanchan, Triguna, Manikanchan, KSP-170 &Arkagarima) were selected for the experimental trial for three different seasons against the main dominating pathogens. For Pre-Kharif planting of cowpea, the 1st week of March, for Kharif planting time, 1st week of June were established as most profitable. During Rabi season for planting of three varieties viz.Kashikanchan, Manikanchan& KSP-170, 4th week of November and for Triguna&Arka Garima, 2nd week of November were found most profitable due to least incidence of diseases and maximum yield.
The integrated disease management of early blight in organically grown tomato under hill condition of Sikkim, India Shivakoty, Pravesh; Basu, Amitava; Maji, Pijush Kanti; Thapa, Sukhram
Asia Pacific Journal of Sustainable Agriculture, Food and Energy Vol. 11 No. 2 (2023): December 2023
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy Network (SAFE Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36782/apjsafe.v11i2.231

Abstract

Tomato (Lycopersicon esculentum Mill.) is the most widely cultivated vegetable crop in the world and early blight caused by Alternaria spp. is one of the major production constraints. Survey was conducted during kharif seasons of 2018-19 &2019-20 in four districts of Sikkim. Maximum early blight disease severity was recorded in south district of Sikkim. Pathogenicity test of isolates collected from different location were established. Morphological, cultural, and molecular identification of the pathogen reveal pathogen as Alternaria spp. Five different bio-control agents i.e., Trichoderma harzianum, T. Viride, Pseudomonas fluorescens, Bacillus subtilis and Bacillus cereus were evaluated against the test pathogens. Among the bio-control agents tested, Trichoderma harzianum (74.89%) and Trichoderma viride (69.41%) showed maximum percent growth inhibition. Open field experiment was conducted with eleven treatments formulated by integrating the different organic inputs, biocontrol agents and copper-based fungicide as chemical check. Organic treatment T9 {Susceptible Variety + Soil treatment with Trichoderma harzianum @1:25(1kg Trichoderma + 25 Kg of FYM) + cow dung slurry 10% + Nimbicidine 0.3% + Panchagavya 10% + Cow Urine 10%} consistently showed the best result among the bioresources tested. Keywords: Tomato, Organic, Bio agent and Integrated disease management
Co-Authors Maji, Pijush Kanti Roy, Sanchari Shivakoty, Pravesh Thapa, Sukhram