?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=L&rft.au=Rusinamhodzi%2C+L&rft.aulast=Rusinamhodzi&rft.atitle=A+meta-analysis+of+long-term+effects+of+conservation+agriculture+on+maize+grain+yield+under+rain-fed+conditions&rft.title=Agronomy+for+Sustainable+Development&rft.issn=1774-0746&rft.date=2011&rft.volume=31&rft.pages=657-673&rft.issue=4&rft.genre=article