1. Department of Agricultural chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India
2. Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India
3. Department of Soil Science and Agricultural Chemistry, Uttar Banga KrishiViswavidyalaya, Pundibari, Cooch Behar, West Bengal, India