Rainfed wheat-based rotations under Mediterranean conditions: Crop sequences, nitrogen fertilization, and stubble grazing in relation to grain and straw quality

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.coverage.countrySYen_US
cg.coverage.regionWestern Asiaen_US
cg.creator.idSingh, Murari: 0000-0001-5450-0949en_US
cg.date.embargo-end-dateTimelessen_US
cg.identifier.doihttps://dx.doi.org/10.1016/j.eja.2007.05.008en_US
cg.isijournalISI Journalen_US
cg.issn1161-0301en_US
cg.issue2en_US
cg.journalEuropean Journal of Agronomyen_US
cg.subject.agrovoccrop rotationen_US
cg.volume28en_US
dc.contributorPala, Mustafaen_US
dc.contributorMasri, Samiren_US
dc.contributorSingh, Murarien_US
dc.contributorHarris, Hen_US
dc.creatorRyan, Johnen_US
dc.date.accessioned2020-11-25T23:05:31Z
dc.date.available2020-11-25T23:05:31Z
dc.description.abstractCrop rotations have evolved as a strategy to obtain harvestable yields in stressed environments due to improved water-use efficiency, nitrogen (N) fixation, and breaking diseases cycles. While fallowing or growing legume crops in the alternate year have shown to consistently increase yields in semi-arid environments such as in the Mediterranean area, little emphasis has been given to cereal quality in rotation trials, especially with respect to N, and thus improved animal and human nutrition. This paper reports the effect of those treatments on cereal quality parameters, especially N, and thus protein, in wheat grain and straw in a long-term (14 years) rainfed cropping systems trial in the medium rainfall zone (300-400 mm year(-1)) in northern Syria that examined seven alternative-year options with durum wheat (Triticum turgidum var durum), i.e., vetch (Vicia sativa), medic (Medicago spp.), chickpea (Cicer arietinum), lentil (Lens culinaris), fallow, watermelon (Citrullus vulgaris) as a summer crop in the fallow year, and continuous wheat. Two ancillary treatments involved N fertilization (0, 30, 60, 90 kg N ha(-1)) in the cereal phase, and stubble grazing management (moderate and heavy grazing, and no grazing or stubble retention). Both the rotation and N treatments had a significant influence on all parameters (test weight, grain and straw N percentage, and total N uptake). By comparison, grazing management had little influence on quality parameters except test weight; however, the residue x N interaction was significant. Rotations such as those with medic and vetch enriched the N in grain and straw. These rotations thus improved the nutritional value in terms of protein of the grain, an important consideration as per capita consumption of bread is high in the Middle East and other sources of protein are limited. Similarly, as grazed or fed straw is dominant in the diet of sheep, the enhanced nutrition is of significance. While fallow produced the highest yields, and is a hedge against the effects of drought, it produces grain and straw of low nutritional value with respect to protein, as a result of dilution of available soil N in the increased biomass. Though less obvious than yield, crop quality parameters should be considered in any cropping system involving rotations, especially those involving legumes. (c) 2007 Elsevier B.V. All rights reserved.en_US
dc.formatPDFen_US
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationJohn Ryan, Samir Masri, Murari Singh, H Harris. (1/2/2008). Rainfed wheat-based rotations under Mediterranean conditions: Crop sequences, nitrogen fertilization, and stubble grazing in relation to grain and straw quality. European Journal of Agronomy, 28 (2), pp. 112-118.en_US
dc.identifier.statusTimeless limited accessen_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/12098
dc.languageenen_US
dc.publisherElsevier Ltd.en_US
dc.sourceEuropean Journal of Agronomy;28,(2007) Pagination 112-118en_US
dc.subjectmediterranean agricultureen_US
dc.subjectcereal croppingen_US
dc.subjectgrain/straw qualityen_US
dc.titleRainfed wheat-based rotations under Mediterranean conditions: Crop sequences, nitrogen fertilization, and stubble grazing in relation to grain and straw qualityen_US
dc.typeJournal Articleen_US
dcterms.available2007-07-20en_US
dcterms.extent112-118en_US
dcterms.issued2008-02-01en_US
mel.impact-factor3.726en_US

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