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dc.contributorMasri, Samiren_US
dc.contributorPala, Mustafaen_US
dc.contributorSingh, Murarien_US
dc.creatorRyan, Johnen_US
dc.date2009-03-16en_US
dc.date.accessioned2021-07-08T12:15:24Z
dc.date.available2021-07-08T12:15:24Z
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationJohn Ryan, Samir Masri, Murari Singh. (16/3/2009). Nutrient Dynamics in a Long‐Term Cereal‐Based Rotation Trial in a Mediterranean Environment: Nitrogen Forms. Communications in Soil Science and Plant Analysis, 40 (1-6), pp. 931-946.en_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/13354
dc.description.abstractMediterranean agriculture is mainly rainfed, with drought being the main crop production constraint, and is based on cereals, wheat (Triticum spp), and barley (Hordeum vulgare). Fallow was a traditional practice to conserve soil moisture, but because of land‐use pressure it is giving way to cereal monoculture, which is unsustainable. The substudy reported here was part of a long‐term rotation trial that sought to examine alternative crop rotation options, that is, durum wheat (T. durum var durum) in rotation with fallow, summercrop (melon, Citrullus vulgaris), wheat (continuous cropping), chickpea (Cicer arietinum), lentil (Lens culinaris), vetch (Vicia sativa), and medic (Medicago spp). Ancillary treatments involved nitrogen (N) applied to the cereal phase and variable stubble grazing intensity (stubble retention, medium grazing, and heavy grazing or complete stubble removal). This substudy, conducted in the final 3 years of the 14‐year trial, involved sampling soil and plants within the cropped rotation plots and sampling soil within bare microplots in selected larger rotation plots. We measured N forms in soil samples at different depths and throughout the seasons. Despite variation within and between seasons, the rotation effect of enhanced N was significant and consistent, being highest for vetch and medic, intermediate for chickpea and lentil, and least for continuous cereal, summer crop, and fallow. Therefore, legume‐based cereal rotations can enhance soil N and thus save on N fertilizer. In bare microplots, total N decreased, labile N was inconsistent, mineral N increased, and biomass N increased and remained stable during the cropping season and then sharply declined. The nutrient dynamic data complemented the crop yield, water‐use efficiency, and soil aggregation data from the trial to support the argument for using legumes in cereal rotations in place of fallow and continuous cereal cropping.en_US
dc.languageenen_US
dc.publisherTaylor and Francisen_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceCommunications in Soil Science and Plant Analysis;40,(2009) Pagination 931,946en_US
dc.subjectsoil nitrogenen_US
dc.subjectdryland cropping systemsen_US
dc.subjectsoil nitrogen dynamicsen_US
dc.subjectseasonal nitrogen mineralizationen_US
dc.subjectrotation influences on soil nitrogenen_US
dc.subjectBarleyen_US
dc.subjectWheaten_US
dc.subjectLentilen_US
dc.subjectChickpeaen_US
dc.subjectVetch (Vicia spp.)en_US
dc.subjectMedicsen_US
dc.titleNutrient Dynamics in a Long‐Term Cereal‐Based Rotation Trial in a Mediterranean Environment: Nitrogen Formsen_US
dc.typeJournal Articleen_US
cg.creator.idSingh, Murari: 0000-0001-5450-0949en_US
cg.creator.ID-typeORCIDen_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.coverage.regionGlobalen_US
cg.contactj.ryan@cgiar.orgen_US
cg.identifier.doihttps://dx.doi.org/10.1080/00103620802695149en_US
dc.identifier.statusTimeless limited accessen_US
mel.impact-factor0.767en_US


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