Self-reseeding annual legumes evaluated as cover crops for untilled vineyards
Authors AffiliationsG. McGourty is Winegrowing and Plant Science Advisor, UC Cooperative Extension (UCCE), Mendocino and Lake counties; J. Nosera is Agricultural Technologist, UCCE Mendocino County; S. Tylicki is General Manager, Steele Wines, Kelseyville, Calif; A. Toth is former intern, UCCE Mendocino County.
Hilgardia 62(4):191-194. DOI:10.3733/ca.v062n04p191. October 2008.
Self-reseeding annual cover crops can regenerate in subsequent years without tilling the seedbed and can be part of a strategy to protect vineyard soil from erosion. We compared 22 such cultivars in a 1-year-old ‘Syrah’ wine-grape vineyard located at 1,400 feet in Lake County. We found significant differences between species in the amount of biomass produced in 2004 and 2005. All of the species studied were relatively low statured and fit well in vineyard middles. Pressure bomb readings taken after the cover crops stopped growing showed that with a dry spring (2004), vines with cover crops were modestly more stressed than those under tillage prior to July irrigations, but after irrigation the cover-cropped vines were slightly less stressed. In 2005, which had rainfall in late spring, there were no differences in vine water status throughout the season. We conclude that water use by the cover crop must have been relatively low and did not result in excessive vine water stress.
Bugg R, McGourty G, Lanini T, et al. Comparison of 32 cover crops in an organic vineyard on the North Coast of California. Biolog Ag Horticult. 1996. 13:63-81.
McGourty G. Covercrops for North Coast vineyards. Practical Winery Vineyard. 1994. 15(2):1-6.
McGourty G. Covercropping systems for organically farmed vineyards. Practical Winery Vineyard. 2004. 26(3):22-38.
McGourty G, Tylicki S, Price J, Nosera J. Performance of 18 cover crop species in a high elevation North Coast vineyard. Practical Winery Vineyard. 2006. 28(4):10-20.
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Agro-environmental partnerships facilitate sustainable wine-grape production and assessment
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Decision support tool seeks to aid stream-flow recovery and enhance water security
Sidebar: Collaborative conservation helps achieve regional water-quantity goals
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Sidebar: Vine surgery tested as management strategy for
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Liquid baits control Argentine ants sustainably in coastal vineyards
Vineyard floor management affects soil, plant nutrition, and grape yield and quality
Soil-landscape model helps predict potassium supply in vineyards
Vineyard nutrient needs vary with rootstocks and soils