Número de control: DPD20154926087
Autor: Steenwerth, Kerri
Título: Cover Crops and Tillage in a Mature Merlot Vineyard Show Few Effects on Grapevines
Publicación: American Society for Enology and Viticulture, ASEV, 2013
Notas: Permanent cover crops are commonly used in vineyard floor management because of their beneficial effects
to soil and vine health, but studies evaluating their competitive effects on vines have been conducted primarily
in nonirrigated vineyards. Future air quality regulations could mandate the use of no-till floor management practices
in California�s Central Valley. We evaluated the combined effects of cover crop type (oats alone or oats grown with
legumes) and tillage on soil nutrient availability, vine nutrition, growth, and yield characteristics of Vitis vinifera
cv. Merlot grown under regulated deficit irrigation in a commercial vineyard from 2008 to 2010. Five treatments
were used: Resident Vegetation (RV) + Till, Oats + Till, Oats/Legumes +Till, Oats + NoTill, and Oats/Legumes +
NoTill. No differences in soil nutrient availability were found among the treatments. Of the numerous nutritional
constituents analyzed on leaf petioles and blades, only NO3-Npetiole was affected by floor management. At nearly all
growth stages among all years, NO3-Npetiole of tilled treatments was twice the no-till treatments. At harvest, yield,
mean cluster weight, cluster number per vine, and aboveground cover crop biomass differed among treatments in
2009 and/or 2010 but not in the first year (2008); however, responses were not consistent among treatments within
each respective year. Importantly, yields were similar from all four cover crop treatments compared to the typical
management (RV + Till), suggesting that use of cover crops and/or no-till practices may be implemented in an irrigated vineyard with little immediate effect on grape productivity in mature vineyards.
American Journal of Enology and Viticulture, ISSN 0002-9254, Vol. 64, Nº 4, 2013, pags. 515-521
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Registros relacionados: American Journal of Enology and Viticulture, ISSN 0002-9254, Vol. 64, Nº 4, 2013, pags. 515-521
Materia / geográfico: tillage
nutrient management
competition
legume
no-till
Tipo de impreso: text (article)
Otros autores: McElrone, Andrew J.
Calderón Orellana, Arturo
Hanifin, Robert C.
Storm, Christian
Collatz, Wesley
Manuck, Christine
Números normalizados: (Revista) ISSN 0002-9254
Procedencia: DIALNET - Artículos
Tipo de publicación: Libros
Derechos: In Copyright (InC): http://rightsstatements.org/vocab/InC/1.0/