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dc.contributor.author Garriz, Patricia Isabel
dc.contributor.author Colavita, Graciela María
dc.contributor.author Alvarez, Hugo L.
dc.contributor.author Spera, Nazarena
dc.contributor.author Blackhall, Valeria
dc.date.available 2018-04-03T21:01:07Z
dc.date.issued 2015-01
dc.identifier.citation Garriz, Patricia Isabel; Colavita, Graciela María; Alvarez, Hugo L.; Spera, Nazarena; Blackhall, Valeria; A Model for Predicting Diameter of ‘Red Sensation’ Pears; International Society for Horticultural Science; Acta Horticulturae; 1068; 2015; 1-2015; 147-152
dc.identifier.issn 0567-7572
dc.identifier.uri http://hdl.handle.net/11336/40597
dc.description.abstract The pear cultivar ‘Red Sensation’ is showing popularity in the industry, because of its highly-colored, sweet and juicy fruit. Fruit size is critical for marketing pear; therefore, knowledge of growth dynamics becomes essential to program harvesting with minimum losses of size and flavor. The objective of this work was to develop a model to predict the seasonal growth for ‘Red Sensation’ pears, expressed in terms of fruit diameter as a function of time from full bloom. Fruit growth was followed at the Experimental Farm of the Universidad Nacional del Comahue, High Valley region, Río Negro, Argentina (38°56’S; 67°59’W), located in an arid region, with average annual rainfall of 250 mm, on a sandy loam soil, during the 2005-06, 2006-07, 2008-09, 2009-10 and 2010-11 growing seasons. The orchard was irrigated by surface flooding, and cultural practices were performed according to the local standard program. Trees were selected at random, and maximum fruit diameter (FD) measurements were carried out every two weeks with a Vernier caliper. The range of sampling dates was 19 and 117 days after full bloom (DFB). Equations were developed with SYSTAT procedure. The R2 values and residual mean squares were used to evaluate the goodness-to-fit of the models. Results showed that the following logistic model provided the most satisfactory fit to the pooled data (n=695), as compared to the power and linear equations: FD (mm)= 81.49/(1 + e1.9865-0.0301 DFB), R2=0.92, P<0.001. Fruit maximal absolute growth rate, derived from the selected function, was 0.61 mm/day. A prediction chart was based on the development of the equation and showed ‘Red Sensation’ pear sizes, at various times after 112 DFB, with practical application to aid crop marketing. This model can also be used for planning orchard practices such as thinning and irrigation.
dc.format application/pdf
dc.language.iso eng
dc.publisher International Society for Horticultural Science
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject PYRUS COMMUNIS
dc.subject GROWTH
dc.subject MODELING
dc.subject SIGMOID CURVE
dc.subject SIZE PREDICTION
dc.title A Model for Predicting Diameter of ‘Red Sensation’ Pears
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2018-03-06T17:47:53Z
dc.journal.volume 1068
dc.journal.number 2015
dc.journal.pagination 147-152
dc.journal.pais Bélgica
dc.journal.ciudad Corbeekhoeve
dc.description.fil Fil: Garriz, Patricia Isabel. Universidad Nacional del Comahue; Argentina
dc.description.fil Fil: Colavita, Graciela María. Universidad Nacional del Comahue; Argentina
dc.description.fil Fil: Alvarez, Hugo L.. Universidad Nacional del Comahue; Argentina
dc.description.fil Fil: Spera, Nazarena. Universidad Nacional del Comahue; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil Fil: Blackhall, Valeria. Universidad Nacional del Comahue; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title Acta Horticulturae
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.actahort.org/books/1068/1068_18.htm
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.17660/ActaHortic.2015.1068.18
dc.conicet.fuente unificacion


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)