?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=VK&rft.au=Singh%2C+VK&rft.aulast=Singh&rft.atitle=Diversification+of+rice+with+pigeonpea+in+a+rice-wheat+cropping+system+on+a+Typic+Ustochrept%3A+effect+on+soil+fertility%2C+yield+and+nutrient+use+efficiency&rft.title=Field+Crops+Research&rft.issn=0378-4290&rft.date=2005&rft.volume=92&rft.pages=85-105+&rft.issue=1&rft.genre=article