<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Use of rainfall indices to analyze the effects of\r\nphosphate rocks on millet in the Sahel"^^ . "Two critical factors that explain low crop productivity in the Sahelian agro-ecozone are inadequate\r\nmoisture and poor soils, particularly phosphorus (P) deficiency. The purpose of this long-term study\r\nwas to explore the use of both local phosphate rock (PR) and inorganic P on yields and risk of millet\r\nreturns under the uncertain rainfall regimes in the Sahel. Using the Standardized Precipitation Index\r\n(SPI) and Percent Confidence Limits (PCL) of the mean rainfall, the 10-year experimental period was\r\ngrouped into rainfall classes. Results showed that the inorganic P fertilizers, that is, single\r\nsuperphosphate and triple superphosphate (SSP+N and TSP) gave the highest average yields. Also,\r\nmillet yield increased with increasing P rates. However, typical farmers in the Sahel barely use P rates\r\nabove 20 kg ha-1 in view of the high cost of imported fertilizers. A low application rate of the local PR, 10\r\nkg P ha-1, increased millet yield between 44 and 67%. Stability analysis using yields from 15 farmers’\r\nfields indicated that the traditional method of growing millet was the least stable (s.e. = 225) and had the\r\nlowest yield (314 kg ha-1). Generally, millet responded to P better when the preseason (May-June) were\r\nwet than dry, except where the non-acidulated PR (PRA) was applied every year (R2=0.99, P < 0.01) for\r\nboth dry and wet preseasons. Risk analysis showed that acidulated PR regardless of rates gave the\r\nhighest millet returns over variable cost of P fertilizer. The study recommends the promotion PR in\r\norder to guarantee stable yields and income for small farmers in the Sahel."^^ . "2011" . . "6" . "3" . . "Academic Publishers"^^ . . . "African Journal of Agricultural Research"^^ . . . "1991637X" . . . . . . . . . . . . . . . . "S"^^ . "Koala"^^ . "S Koala"^^ . . "A"^^ . "Bationo"^^ . "A Bationo"^^ . . "B"^^ . "Shapiro"^^ . "B Shapiro"^^ . . "C F"^^ . "Yamoah"^^ . "C F Yamoah"^^ . . . . . . "Use of rainfall indices to analyze the effects of\r\nphosphate rocks on millet in the Sahel (PDF)"^^ . . . . . . "Yamoah%20et%20al.pdf"^^ . . . "Use of rainfall indices to analyze the effects of\r\nphosphate rocks on millet in the Sahel (Image (JPEG))"^^ . . . . . . "preview.jpg"^^ . . "HTML Summary of #63 \n\nUse of rainfall indices to analyze the effects of \nphosphate rocks on millet in the Sahel\n\n" . "text/html" . . . "Millets"@en . .