?url_ver=Z39.88-2004&rft_id=10.1080%2F15324982.2019.1625984&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=M&rft.au=Boubou+Diallo%2C+M&rft.aulast=Boubou+Diallo&rft.atitle=Why+is+the+spatial+variability+of+millet+yield+high+at+farm+level+in+the+Sahel%3F+Implications+for+research+and+development&rft.title=Arid+Land+Research+and+Management+(TSI)&rft.issn=1532-4982&rft.date=June+2019&rft.pages=1-24&rft.genre=article