?url_ver=Z39.88-2004&rft_id=Information+Bulletin+9&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Foar.icrisat.org%2F763%2F&rft.title=A+Handbook+on+the+Rainfall+Climatology+of+West+Africa%3A+Data+for+Selected+Locations&rft.creator=Virmani%2C+S+M&rft.creator=Reddy%2C+S+J&rft.creator=Bose%2C+M+N+S&rft.subject=Agriculture-Farming%2C+Production%2C+Technology%2C+Economics&rft.description=In+the+attempts+for+rational+development+of+agriculture+in+the+arid+and+emi-arid+regions+of+the+world%2C+knowledge+regarding+suitable+means+for+rapidly+evaluating+climate+and+moisture+adequacies+is+important+and+crucial.+Effective+estimation+of+the+climatic+water+balance+over+large+areas+depends+to+a+large+extent+on+the+available+supply+and+the+ability+to+estimate+potential+demand.+Mean+monthly+rainfall+provides+a+general+idea+about+the+available+supply.+Hargreaves+(1977)+indicated+that+75%25+probability+of+rainfall+occurrence+is+a+much+more+reliable+indication+of+moisture+available+for+crop+production+than+mean+precipitation.+With+this+idea%2C+we+are+listing+the+dependable+precipitation+(DP)+amounts+for+all+the+locations.+Dependable+precipitation+is+defined+as+the+precipitation+that+has+a+specified+probability+of+occurrence+(in+this+case+at+least+3+to+4+years)+based+on+an+analysis+of+longtime+precipitation+records.+Potential+evapotranspiration+(PE)+gives+an+idea+regarding+the+potential+demand+for+water+at+a+given+location.+It+is+defined+as+the+amount+of+water+transpired+from+an+actively+growing%2C+short+green+plant+cover+(usually+grass)+with+a+full+crop+cover+and+a+continuously+adequate+moisture+supply.+PE+values+were+estimated+for+all+the+locations+according+to+procedure+described+by+Reddy+and+Virmani+(1980).&rft.publisher=International+Crops+Research+Institute+for+the+Semi-Arid+Tropics&rft.date=1980&rft.type=Monograph&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Foar.icrisat.org%2F763%2F1%2FRA_00041.pdf&rft.identifier=++Virmani%2C+S+M+and+Reddy%2C+S+J+and+Bose%2C+M+N+S++(1980)+A+Handbook+on+the+Rainfall+Climatology+of+West+Africa%3A+Data+for+Selected+Locations.++Manual.+International+Crops+Research+Institute+for+the+Semi-Arid+Tropics.+++++&rft.relation=Information+Bulletin+9