Soil test standardization in west Asia‐North Africa Region

cg.contactj.ryan@cgiar.orgen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.date.embargo-end-dateTimelessen_US
cg.identifier.doihttps://dx.doi.org/10.1080/00103629409369141en_US
cg.isijournalISI Journalen_US
cg.issn0010-3624en_US
cg.issn1532-2416en_US
cg.issue9-10en_US
cg.journalCommunications in Soil Science and Plant Analysisen_US
cg.subject.agrovocdrylandsen_US
cg.subject.agrovocsoilen_US
cg.volume25en_US
dc.contributorGarabet, Soniaen_US
dc.creatorRyan, Johnen_US
dc.date.accessioned2021-06-17T16:27:31Z
dc.date.available2021-06-17T16:27:31Z
dc.description.abstractIn dryland fanning of the Mediterranean zone, which has rain in the winter with long dry summers, inadequate soil moisture is generally the dominant factor limiting crop growth. Nitrogen (N) and phosphorus (P) can significantly and economically increase yields in most circumstances when both elements are deficient. However, soil testing for fertilizer recommendation is in its infancy in the vast area of West Asia‐North Africa (WANA) with a winter rainfall climate. Fundamental to such endeavors is the use of appropriate tests and consistency of test results. Thus, a standard soil sample (Vertic Xerochrept), along with a questionnaire, was sent to 50 laboratories in the region which are involved with soil analysis. Of the 22 respondents, most tested for available nutrients, pH, and electrical conductivity (EC), but few did tests for total P, boron (B), or sulfur (S). Most laboratories made recommendations for clients. Few laboratories were involved with 15N or 32P analysis, while a small number performed clay mineral analysis. Units of measurement varied among laboratories. While most laboratories were close to the normal values for the test sample, others showed wide variation, especially for Olsen‐P and organic matter. We hope that the sources of such variation can be identified and communicated to the survey participants. The survey can help broaden and improve communication among soil scientists in ICARDA's Soil Fertility Network and improve the effectiveness of soil and fertilizer use research.en_US
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationJohn Ryan, Sonia Garabet. (11/11/2008). Soil test standardization in west Asia‐North Africa Region. Communications in Soil Science and Plant Analysis, 25 (9-10), pp. 1641-1653.en_US
dc.identifier.statusTimeless limited accessen_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/13227
dc.languageenen_US
dc.publisherTaylor and Francisen_US
dc.sourceCommunications in Soil Science and Plant Analysis;25,(2008) Pagination 1641-1653en_US
dc.subjectasia‐north africa regionen_US
dc.titleSoil test standardization in west Asia‐North Africa Regionen_US
dc.typeJournal Articleen_US
dcterms.available2008-11-11en_US
dcterms.extent1641-1653en_US
dcterms.issued1994-01-01en_US
mel.impact-factor0.767en_US

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