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PRODUCTIVE AND PHISIOLOGICAL RESPONSE TO IRRIGATION OF FIVE WHITE VITIS VINIFERA L. VARIETIES CULTIVATED IN SPAIN RESPUESTA PRODUCTIVA Y FISIOLÓGICA AL RIEGO DE CINCO VARIEDADES BLANCAS DE VITIS VINIFERA L. CULTIVADAS EN ESPAÑA
MONTORO, Amelia1*; URIARTE, David2; FANDIÑO, María3; CANCELA, Javier J.3; VALDÉS, Esperanza4; VILANOVA, Mar5; GARCÍA-ESCUDERO, Enrique6; YUSTE, Jesús7 1 ITAP-FUNDESCAM, Polígono Campollano, Av. Segunda 41, 02007 Albacete, Spain. 2CICYTEX, Finca La Orden, Ctra. AV, km 372, Guadajira, Badajoz, Spain. 3USC-Dept. Ingeniería Agroforestal.Escuela Politécnica Superior, Campus Universitario s/n. 27002 Lugo, Spain. 4CICYTEX, Instituto Tecnológico Agroalimentario de Extremadura, Av. Adolfo Suárez, 06007 Badajoz, Spain. 5Misión Biológica de Galicia (CSIC), El Palacio-Salcedo. 36143. Pontevedra. Spain 6 ICVV, Ctra. de Burgos, km. 6. Finca La Grajera 26071 Logroño, Spain. 7ITACYL, Ctra. Burgos, km 119, 47071 Valladolid, Spain *Corresponding author: meli.itap@dipualba.es
Abstract: The work was carried out with five white Vitis vinifera, L. varieties (Verdejo, Tempranillo Blanco, Airén, Macabeo and Albariño), four of them cultivated in the Denomination of Origin (D.O.) where they have the greatest area planted of Spain (Verdejo in Rueda, Tempranillo Blanco in Rioja, Airén in La Mancha and Albariño in Rías Baixas) and Macabeo, that although it is not the most important variety in Extremadura, its study was considered there for the importance that it has in all Spain. The study consisted in providing the same irrigation treatment to all of them and comparing productive results (quantitative and qualitative) with those obtained in the same non-irrigated varieties. Results from the first year of study show that irrigation affected most of the parameters studied, in all varieties, although not to the same extent on each one of them; despite having all the same irrigation treatment, crop-water content between varieties was different when measured as midday stem water potential and considering that a potential value corresponds with a water status determined, regardless of the variety.
Keywords: water stress, phenology, stem water potential, yield, qualitative parameters.
Abstract: The work was carried out with five white Vitis vinifera, L. varieties (Verdejo, Tempranillo Blanco, Airén, Macabeo and Albariño), four of them cultivated in the Denomination of Origin (D.O.) where they have the greatest area planted of Spain (Verdejo in Rueda, Tempranillo Blanco in Rioja, Airén in La Mancha and Albariño in Rías Baixas) and Macabeo, that although it is not the most important variety in Extremadura, its study was considered there for the importance that it has in all Spain. The study consisted in providing the same irrigation treatment to all of them and comparing productive results (quantitative and qualitative) with those obtained in the same non-irrigated varieties. Results from the first year of study show that irrigation affected most of the parameters studied, in all varieties, although not to the same extent on each one of them; despite having all the same irrigation treatment, crop-water content between varieties was different when measured as midday stem water potential and considering that a potential value corresponds with a water status determined, regardless of the variety.
Keywords: water stress, phenology, stem water potential, yield, qualitative parameters.