?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S&rft.au=Sharma%2C+S&rft.aulast=Sharma&rft.atitle=Soil+Potassium+Fractions+in+Rice-Wheat+Cropping+System+after+Twelve+Years+of+Lantana+Residue+Incorporation+in+a+Northwest+Himalayan+Acid+Alfisol&rft.title=Journal+of+Plant+Nutrition&rft.issn=0190-4167&rft.date=2013&rft.volume=36&rft.pages=1809-1820&rft.issue=12&rft.genre=article