Wheat yield and tillage-straw management system × year interaction explained by climatic co-variables for an irrigated bed planting system in northwestern Mexico

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dc.contributor.authorVerhulst, N.en
dc.contributor.authorSayre, Ken D.en
dc.contributor.authorVargas, M.en
dc.contributor.authorCrossa, J.en
dc.contributor.authorDeckers, Jozefen
dc.contributor.authorRaes, D.en
dc.contributor.authorGovaerts, Bramen
dc.contributor.departmentSustainable Agriculture and Natural Resource Management (SANREM) Knowledgebaseen
dc.coverage.spatialYaqui Valleyen
dc.coverage.spatialMexicoen
dc.coverage.temporal1992 - 2009en
dc.date.accessioned2016-04-19T20:29:19Zen
dc.date.available2016-04-19T20:29:19Zen
dc.date.issued2011en
dc.descriptionMetadata only recorden
dc.description.abstractWheat is an important food and income source and estimated demand for wheat in the developing world is projected to increase substantially. The objectives of this study were to gain insight into (i) the effect of tillage-straw system on yield and yield components (number of grains per meter squared and thousand kernel weight), (ii) the relation between climatic conditions and yield and yield components, (iii) the explanation of tillage-straw system × year interaction for yield and yield components by climatic co-variables. Wheat grain yield and yield components were measured in a long-term trial established in 1992 under irrigated, arid conditions in northwestern Mexico. Five tillage-straw management systems (conventionally tilled raised beds [CTB] with straw incorporated and permanent raised beds [PB] with straw burned, removed, partly retained or fully retained) were compared for a wheat-maize rotation. Daily climatic data were averaged over six periods corresponding approximately to advancing wheat growth stages. The PB-straw retained and PB-straw removed had the highest yields (average yield of 7.31 and 7.24 t ha-1, respectively) and grains per m2. The PB-straw burned had the lowest yield (average yield of 6.65 t ha-1) and grains per m2, but the highest thousand kernel weight. Maximum temperature was positively correlated to final grain yield during tillering and head differentiation, but was negatively correlated to thousand kernel weight during grain-filling. For the tillage-straw system year interaction, three groups of management systems were distinguished for yield and grains per m2: PB-straw burned, CTB-straw incorporated and PB where straw is not burned. The CTB-straw incorporated had a positive interaction with year in favorable years with high radiation and evapotranspiration. The PB-straw burned was relatively more affected by excess water conditions and showed positive interactions in years with high relative humidity. The PB-straw retained was the most stable in different climatic conditions, indicating that this management system could contribute to maintaining wheat yield in a changing climate scenario. (Cab Abstracts)en
dc.format.mimetypetext/plainen
dc.identifier5247en
dc.identifier.citationField Crops Research 124(3): 347 - 356en
dc.identifier.doihttps://doi.org/10.1016/j.fcr.2011.07.002en
dc.identifier.issn0378-4290en
dc.identifier.urihttp://hdl.handle.net/10919/69909en
dc.language.isoen_USen
dc.publisherElsevier B.V.en
dc.rightsIn Copyrighten
dc.rights.holderCopyright 2011 Elsevier B.V. All rights reserveden
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectClimate controlen
dc.subjectConservation tillageen
dc.subjectTillage-straw systemen
dc.subjectClimatic conditionsen
dc.subjectWheaten
dc.subjectMexicoen
dc.subjectClimate changeen
dc.subjectLong-term trialen
dc.subjectWheat-maize rotationen
dc.subjectYaqui valleyen
dc.subjectPermanent raised bedsen
dc.subjectTemperatureen
dc.subjectField Scaleen
dc.titleWheat yield and tillage-straw management system × year interaction explained by climatic co-variables for an irrigated bed planting system in northwestern Mexicoen
dc.typeAbstracten
dc.type.dcmitypeTexten

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