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Hydrological approaches to measure or estimate crop water use – B. Practical application

2024Journal article Open access
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dc.contributor.authorCarrilho, Vasco
dc.contributor.authorRolim, João
dc.contributor.authorFerreira, Maria Isabel
dc.date.accessioned2024-07-24T17:32:08Z
dc.date.available2024-07-24T17:32:08Z
dc.date.issued2024
dc.description.abstractWe present an application in which the time sequence of the differences between the estimated values of soil water content (SWC or θ) and the measured ones, in this case by the most direct method of gravimetry, provided an opportunity to exemplify the possibility of adjusting a selected parameter used for actual evapotranspiration (ETa) estimation. The variable selected for adjustment was the crop coefficient (Kc), for which one finds a higher uncertainty. This is a simple self-learning process, in the sense that the investment, in obtaining correct soil parameters and soil water data of good quality, creates an opportunity to get well-adjusted parameters for better ETa estimation that, used in the following, allows a better irrigation scheduling. The stress coefficients were also estimated. The crop used is pepper (Capsicum annuum L.), planted in a field located in center-east Portugal, in a clay loam soil, drip irrigated, using different spacing arrangements (simple and double line) and occasional stress periods in some of the four experimental plots. The values of Kc resulting from this kind of iterative process were quite different from the initial ones, and relatively well related with leaf area index measured in the four plots.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.citationCarrilho, V., Rolim, J., Ferreira, M.I. (2024) Hydrological approaches to measure or estimate crop water use – B. Practical application. Anais do Instituto Superior de Agronomia, Vol. 50, p. 47-69pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/31353
dc.language.isoengpt_PT
dc.publisherISApt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectwater balancept_PT
dc.subjectcrop evapotranspirationpt_PT
dc.subjectirrigation schedulingpt_PT
dc.subjectcrop coefficientpt_PT
dc.subjectleaf area indexpt_PT
dc.subjectself-learningpt_PT
dc.subjectpepperpt_PT
dc.subjectsouth Europept_PT
dc.titleHydrological approaches to measure or estimate crop water use – B. Practical applicationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleAnais do Instituto Superior de Agronomiapt_PT
person.familyNameRolim Fernandes Machado Lopes
person.familyNameFreire Ribeiro Ferreira
person.givenNameJoão Rui
person.givenNameMaria Isabel
person.identifier.ciencia-idDB10-1A20-7D98
person.identifier.ciencia-id201D-9F37-6BBA
person.identifier.orcid0000-0003-1782-2732
person.identifier.orcid0000-0002-9205-2670
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf6bba224-7c13-4969-bf4d-e4d4d75e6f2c
relation.isAuthorOfPublication88275f65-273d-431d-97fb-0063086cc53e
relation.isAuthorOfPublication.latestForDiscoveryf6bba224-7c13-4969-bf4d-e4d4d75e6f2c

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