Use of rainfall indices to analyze the effects of phosphate rocks on millet in the Sahel

Simple item page
cg.coverage.countryNiger
cg.coverage.iso3166-alpha2NE
cg.coverage.regionAfrica
cg.coverage.regionWestern Africa
cg.identifier.doihttps://doi.org/10.5897/ajar10.300en
cg.identifier.urlhttps://academicjournals.org/journal/AJAR/article-abstract/D2A9B2934685en
cg.isijournalISI Journalen
cg.issn1991-637Xen
cg.issue3en
cg.journalAfrican Journal of Agricultural Researchen
cg.reviewStatusPeer Reviewen
cg.subject.ciatSOIL INFORMATIONen
cg.subject.ciatFARMING SYSTEMSen
cg.volume6en
dc.contributor.authorYamoah, C.F.en
dc.contributor.authorBationo, B. Andréen
dc.contributor.authorShapiro, Barry I.en
dc.contributor.authorSaidou, Ken
dc.date.accessioned2014-10-02T08:33:26Zen
dc.date.available2014-10-02T08:33:26Zen
dc.identifier.urihttps://hdl.handle.net/10568/44210
dc.titleUse of rainfall indices to analyze the effects of phosphate rocks on millet in the Sahelen
dcterms.abstractTwo critical factors that explain low crop productivity in the Sahelian agro-ecozone are inadequate moisture and poor soils, particularly phosphorus (P) deficiency. The purpose of this long-term study was to explore the use of both local phosphate rock (PR) and inorganic P on yields and risk of millet returns under the uncertain rainfall regimes in the Sahel. Using the Standardized Precipitation Index (SPI) and Percent Confidence Limits (PCL) of the mean rainfall, the 10-year experimental period was grouped into rainfall classes. Results showed that the inorganic P fertilizers, that is, single superphosphate and triple superphosphate (SSP+N and TSP) gave the highest average yields. Also, millet yield increased with increasing P rates. However, typical farmers in the Sahel barely use P rates above 20 kg ha-1 in view of the high cost of imported fertilizers. A low application rate of the local PR, 10 kg P ha-1, increased millet yield between 44 and 67%. Stability analysis using yields from 15 farmers’ fields indicated that the traditional method of growing millet was the least stable (s.e. = 225) and had the lowest yield (314 kg ha-1). Generally, millet responded to P better when the preseason (May-June) were wet than dry, except where the non-acidulated PR (PRA) was applied every year (R2=0.99, P < 0.01) for both dry and wet preseasons. Risk analysis showed that acidulated PR regardless of rates gave the highest millet returns over variable cost of P fertilizer. The study recommends the promotion PR in order to guarantee stable yields and income for small farmers in the Sahel.en
dcterms.accessRightsOpen Access
dcterms.available2011-02-04
dcterms.descriptionDOI not working as of 2025-05-15. Reported to Academic Journals via Crossref.en
dcterms.issued2011-02
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.subjectsoil fertilityen
dcterms.subjectmilletsen
dcterms.subjectrainen
dcterms.subjectphosphorusen
dcterms.subjectphosphate rocken
dcterms.subjectorganic fertilizersen
dcterms.subjectsuperphosphateen
dcterms.subjectfertilidad del sueloen
dcterms.subjectmijoen
dcterms.subjectlluviaen
dcterms.subjectfosfóroen
dcterms.subjectroca fosfóricaen
dcterms.subjectabonos orgánicosen
dcterms.subjectsuperfosfatoen
dcterms.typeJournal Article

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
D2A9B2934685.pdf
Size:
101.4 KB
Format:
Adobe Portable Document Format
Description:
Journal Article
Download

Collections

CIAT Articles in Journals