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dc.contributorMcNEILL, A. M.en_US
dc.contributorHarris, H.C.en_US
dc.contributorSwift, R. S.en_US
dc.creatorPILBEAM, C. J.en_US
dc.date1997-06-01en_US
dc.date.accessioned2021-03-30T23:49:26Z
dc.date.available2021-03-30T23:49:26Z
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationC. J. PILBEAM, A. M. McNEILL, H. C. Harris, R. S. Swift. (1/6/1997). Effect of fertilizer rate and form on the recovery of N-15-labelled fertilizer applied to wheat in Syria. Journal of Agricultural Science, 128 (4), pp. 415-424.en_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/12790
dc.description.abstractN-15-labelled fertilizer was applied at different rates (0, 30, 60, 90 kg N ha(-1)) and in different forms (urea or ammonium sulphate) to wheat grown in Syria in three seasons (1991/92, 1992/93 and 1994/95). Recovery of N-15-labelled fertilizer in the above-ground crop at harvest was low (8-22 %), with the amount of N-15-labelled fertilizer recovered in the crop increasing as the rate of application increased. Fertilizer application caused a significant increase in the amount of unlabelled soil N in the crop, suggesting that the application of N fertilizer caused a 'real' added nitrogen interaction. Recovery of N-15-labelled fertilizer in the crop was unaffected by the form of the fertilizer. On average 31 % (14-54 %) of the N-15-labelled fertilizer remained in the soil at harvest, mostly in the 0-20 cm layer. At the lowest application rate (30 kg N ha(-1)) most of the residual fertilizer was as organic N, but at the higher application rates (60 and 90 kg N ha(-1)), a greater proportion of the N-15-labelled fertilizer was recovered as inorganic N, presumably as the result of top-dressing N in dry conditions in the spring. The amount of N-15-labelled fertilizer remaining in the soil increased as the fertilizer rate increased, but was unaffected by the form of fertilizer applied. Losses of N-15-labelled fertilizer were large (> 35%), probably caused by gaseous losses, either through volatilization of N from the calcareous soil, or through denitrification from wet soils rich in organic residues. N fertilization strategies in the West Asia/North Africa (WANA) region should take note of the low recovery of N fertilizer by the crop in the season of application, and the resultant large quantities of residual fertilizer.en_US
dc.languageenen_US
dc.publisherCambridge University Press (CUP)en_US
dc.sourceJournal of Agricultural Science;128,Pagination 415-424en_US
dc.titleEffect of fertilizer rate and form on the recovery of N-15-labelled fertilizer applied to wheat in Syriaen_US
dc.typeJournal Articleen_US
dcterms.extent415-424en_US
cg.subject.agrovocnitrogenen_US
cg.subject.agrovocammoniaen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerUniversity of Reading - UORen_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.coverage.regionWestern Asiaen_US
cg.coverage.countrySYen_US
cg.contactunknown123456@unknown1.comen_US
cg.identifier.doihttps://dx.doi.org/10.1017/S0021859697004371en_US
cg.isijournalISI Journalen_US
dc.identifier.statusTimeless limited accessen_US
mel.impact-factor1.082en_US
cg.issn0021-8596en_US
cg.issn1469-5146en_US
cg.journalJournal of Agricultural Scienceen_US
cg.issue4en_US
cg.volume128en_US


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