Yield and sugar accumulating capacities of Airén cultivar. A preliminary study

Junquera González, Pedro; José Prada, Eduardo de; Fresno, Juan Manuel del; Mejías, Juan Francisco y Lissarrague Garcia-Gutierrez, Jose Ramon (2015). Yield and sugar accumulating capacities of Airén cultivar. A preliminary study. En: "19es Journées GiESCO 2015", 31/05/2015-05/06/2015, Montpellier, Francia. p. 5.

Descripción

Título: Yield and sugar accumulating capacities of Airén cultivar. A preliminary study
Autor/es:
  • Junquera González, Pedro
  • José Prada, Eduardo de
  • Fresno, Juan Manuel del
  • Mejías, Juan Francisco
  • Lissarrague Garcia-Gutierrez, Jose Ramon
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 19es Journées GiESCO 2015
Fechas del Evento: 31/05/2015-05/06/2015
Lugar del Evento: Montpellier, Francia
Título del Libro: 19es Journées GiESCO 2015
Fecha: 2015
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Producción Agraria
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Airén is the most worldwide spread white grape cultivar, high yielding, well adapted to hot, dry conditions, and not very sensitive to fungal diseases. Its largest growing region is La Mancha, where Airén has been traditionally bush trained, spur pruned and grown with no irrigation. However, grape growing has evolved to meet the need for higher yields and harvest mechanization; and modern cultural practices train grape vines to simple multi-wire trellis systems, cane pruned, and usually irrigated. The aim of the present study was to evaluate the yield and sugar accumulating capacities of Airén cultivar with regard to leaf area, and to assess the influence that different yield components have on yield. In 2014, five commercial irrigated vineyards, located in La Mancha, of different ages, and grafted onto different rootstocks were selected for this study. Canopy surface area (SA) was measured at maturity. Berry weight and sugar concentration were measured during ripening on a weekly basis. Yield and yield components were determined at harvest. Values for shoot density ranged 2.3-5.1 shoots/m2; SA, 0.6-1.1 m2/m2; yield, 20-40 t/ha; fertility, 1.1-1.7 bunches/shoot; bunch weight, 450-650 g; berry weight, 2.5-2.9 g; and sugar concentration, 17-21 ºBrix. The number of bunches per shoot was the yield component that had the greatest influence on yield. The number of berries was the main contributing factor to bunch weight. A lineal relationship between SA/yield and sugar concentration was observed, with values of SA/yield ranging from 0.20 to 0.45 m2/kg. A ratio SA/yield of approximately 0.4 m2/kg was needed to reach a value of 20 ºBrix. Hence it would be necessary a SA of 12000 m2/ha, under the conditions of this study, to achieve a 30 t/ha yield, and a sugar concentration of 20 ºBrix. These results are a step forward in the study of the Airén cultivar, being of help for grape growers in the center area of Spain in order to maximize crop yield and sugar accumulation.

Más información

ID de Registro: 42014
Identificador DC: http://oa.upm.es/42014/
Identificador OAI: oai:oa.upm.es:42014
URL Oficial: https://colloque.inra.fr/giesco-2015
Depositado por: Memoria Investigacion
Depositado el: 28 Jun 2016 15:10
Ultima Modificación: 28 Jun 2016 15:10
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