Estimativa da exigência hídrica do amendoim usando um modelo agrometeorológico

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dc.contributor.authorAssunção, Hildeu Ferreira da
dc.contributor.authorEscobedo, João Francisco [UNESP]
dc.contributor.institutionUniversidade Federal de Goiás (UFG)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:23:55Z
dc.date.available2014-05-27T11:23:55Z
dc.date.issued2009-07-01
dc.description.abstractIn the experimental area of the Department of Environmental Sciences (21.85° S; 48.43° W; 786 m), in the School of Agronomical Sciences, UNESP, Botucatu, SP, an experiment was carried out using peanut (Arachis hypogaea L), cv. IAC-TATU-ST, to quantify the crop daily water requirements. During the peanut crop cycle, the environmental variables, such as rainfall, air temperature, air relative humidity, soil matric potential, soil heat flux and radiation balance, have been registered continually. These measurements were used to calculate the daily crop evapotranspiration, by the Bowen ratio method. The water replacement required by the peanut crop was done the dripping irrigation system, oriented by a dynamic agrometeorological model that computes the entrance and exit of water in the soil. During the peanut crop cycle, 9.0 mm of water was used from sowing to emergence; 67.0 mm of water, in the growth stage; 166.0 mm, in the flowering stage; 124.0 mm in the final stage and 46.0 mm from physiological maturity to harvest. Oot of 412.0 mm of the total consumption, 246.0 mm of water was supplied by irrigation and 166.0 mm by the rain. The grain yield was 3.15 t ha-1 for 15% of humidity, and the water use efficiency was 0.764 kg m-3.en
dc.description.affiliationUniversidade Federal de Goiás, Campus Jataí, Jataí, GO
dc.description.affiliationDepartamento de Recursos Naturais Faculdade de Ciências Agronômicas Universidade Estadual Paulista, Botucatu, SP
dc.description.affiliationUnespDepartamento de Recursos Naturais Faculdade de Ciências Agronômicas Universidade Estadual Paulista, Botucatu, SP
dc.format.extent325-335
dc.identifierhttp://200.145.140.50/ojs1/viewarticle.php?id=455&layout=abstract
dc.identifier.citationIrriga, v. 14, n. 3, p. 325-335, 2009.
dc.identifier.file2-s2.0-73649097548.pdf
dc.identifier.issn1413-7895
dc.identifier.issn1808-3765
dc.identifier.scopus2-s2.0-73649097548
dc.identifier.urihttp://hdl.handle.net/11449/71050
dc.language.isopor
dc.relation.ispartofIrriga
dc.relation.ispartofsjr0,283
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBowen ratio
dc.subjectIrrigation
dc.subjectWater balance
dc.subjectWater use efficiency
dc.subjectagrometeorology
dc.subjectair temperature
dc.subjectcrop yield
dc.subjectdrip irrigation
dc.subjectenvironmental factor
dc.subjectevapotranspiration
dc.subjectexperimental study
dc.subjectnumerical model
dc.subjectnut
dc.subjectrelative humidity
dc.subjectwater budget
dc.subjectwater use
dc.subjectBotucatu
dc.subjectBrazil
dc.subjectSao Paulo [Brazil]
dc.subjectArachis hypogaea
dc.titleEstimativa da exigência hídrica do amendoim usando um modelo agrometeorológicopt
dc.title.alternativeUse of an agrometeorological model to computing the peanut water requirementsen
dc.typeArtigo
dcterms.licensehttp://irriga.fca.unesp.br/index.php/irriga/about
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt
unesp.departmentSolos e Recursos Ambientais - FCApt

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