PRADHAN, P R, R N PANDEY, U K BEHERA, A SWARUP, S C DATTA, and B S DWIVEDI. 2011. “Tillage and Crop Residue Management Practices on Crop Productivity, Phosphorus Uptake and Forms in Wheat (Triticum Aestivum)-Based Cropping Systems*”. The Indian Journal of Agricultural Sciences 81 (12). https://epubs.icar.org.in/index.php/IJAgS/article/view/13306.