Availability of Phosphate Applied to Calcareous Soils of West Asia and North Africa

cg.contactcr1tocaj@uco.esen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerUniversidad de Cordoba - UdCen_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/10.2136/sssaj1993.03615995005700030022xen_US
cg.isijournalISI Journalen_US
cg.issn0361-5995en_US
cg.issn0361-5995en_US
cg.issn1435-0661en_US
cg.issue3en_US
cg.journalSoil Science Society of America Journalen_US
cg.subject.agrovoccalcareous soilsen_US
cg.volume57en_US
dc.contributorMatar, A.en_US
dc.contributorCastellet, Jose Torrenten_US
dc.creatorAfif, E.en_US
dc.date.accessioned2021-12-16T22:09:15Z
dc.date.available2021-12-16T22:09:15Z
dc.description.abstractThe relative influence of different soil components on P availability in calcareous soils is contradictory in the literature. For this reason, P‐incubation experiments were conducted on 19 soils from different agricultural areas of West Asia‐North Africa. The soils contrasted widely in clay, CaCO3, and Fe oxide contents. The availability index (AI), the ratio between the increase in Olsen P and the P applied, was determined between 30 and 240 d after applying rates between 20 and 500 mg P kg−1 soil. The Al at 20 mg P kg−1 (AI20) changed little with time after 60 d. The AI20 at 180 d was negatively correlated to the Fe oxide content and to the cation‐exchange capacity of the soils. In a stepwise regression procedure, the variance of AI20 that was accounted for increased significantly from 44 to 56, and then to 70% by including Fe oxides, cation‐exchange capacity, and CaCO3 content. At a rate of 500 mg kg−1, AI500 decreased more markedly with time and was negatively correlated, at all times, with the amount of CaCO3 but not correlated with Fe oxides, cation‐exchange capacity, or clay content; at some times, a positive correlation was found between AI500 and organic matter. These results (i) support the idea that P reactions in calcareous soils differ according to the P application rate, and (ii) raise caution about the incubation conditions in the laboratory that are used to estimate the loss of P availability in calcareous soils.en_US
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationE. Afif, A. Matar, Jose Torrent Castellet. (1/5/1993). Availability of Phosphate Applied to Calcareous Soils of West Asia and North Africa. Soil Science Society of America Journal, 57 (3), pp. 756-760.en_US
dc.identifier.statusTimeless limited accessen_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/66605
dc.languageenen_US
dc.publisherSoil Science Society of Americaen_US
dc.sourceSoil Science Society of America Journal;57,(1993) Pagination 756-760en_US
dc.subjectphosphateen_US
dc.titleAvailability of Phosphate Applied to Calcareous Soils of West Asia and North Africaen_US
dc.typeJournal Articleen_US
dcterms.available1993-05-01en_US
dcterms.extent756-760en_US
mel.impact-factor2.307en_US

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