R.H. Wanjari and Pankaj Sharma, M. S. S. R. (2014). Balance and Forms of Potassium under Rice-Wheat System in a 40-year-old Long-Term Experiment on Mollisols of Pantnagar. Journal of the Indian Society of Soil Science, 62(1). https://epubs.icar.org.in/index.php/JISSS/article/view/41243