Show simple item record

dc.contributorMasri, Samiren_US
dc.contributorPala, Mustafaen_US
dc.contributorSingh, Murarien_US
dc.creatorRyan, Johnen_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.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.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.subjectVetch (Vicia spp.)en_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.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
dc.identifier.statusTimeless limited accessen_US

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

DSpace software copyright © 2002-2016  DuraSpace
MELSpace content providers and partners accept no liability to any consequence resulting from use of the content or data made available in this repository. Users of this content assume full responsibility for compliance with all relevant national or international regulations and legislation.
Theme by 
Atmire NV