?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=G+G&rft.au=Hennessy%2C+G+G&rft.aulast=Hennessy&rft.atitle=Influence+of+primary+weather+variables+on+sorghum+leaf+blight+severity+in+Southern+Africa&rft.title=Phytopathology+&rft.issn=0031-949X&rft.date=1990&rft.volume=80&rft.pages=943-945&rft.issue=10&rft.genre=article