1. Department of Agricultural Chemistry and Soil Science, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal, India;
2. Regional Research Station (New Alluvial Zone), Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal, India;
3. AICRP on Soil test and Crop Response Correlation, Directorate of Research, Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal, India