Vineyard floor management affects soil, plant nutrition, and grape yield and quality
Louise E. Jackson
Authors AffiliationsR. Smith are Farm Advisors, UC Cooperative Extension (UCCE), Monterey, Santa Cruz and San Benito counties; L. Bettiga are Farm Advisors, UC Cooperative Extension (UCCE), Monterey, Santa Cruz and San Benito counties; M. Cahn are Farm Advisors, UC Cooperative Extension (UCCE), Monterey, Santa Cruz and San Benito counties; K. Baumgartner is Research Plant Pathologist, USDA Agricultural Research Service, Department of Plant Pathology, UC Davis; L.E. Jackson is Professor and Cooperative Extension Specialist, Department of Land, Air and Water Resources, UC DavisL.E. Jackson is Professor and Cooperative Extension Specialist, Department of Land, Air and Water Resources, UC Davis; T. Bensen is Postdoctoral Research Associate, Department of Biology, University of Mississippi.
Hilgardia 62(4):184-190. DOI:10.3733/ca.v062n04p184. October 2008.
Management of the vineyard floor affects soil and crop productivity, as well as runoff and sediment that leave the vineyard. In Monterey County, weed control is typically conducted in a 4-foot-wide area under the vines, while cover crops are planted in the middles between vine rows. This 5-year multidisciplinary study in a low rainfall vineyard evaluated the impact of weed control strategies (cultivation, pre-emergence and post-emergence herbicides) in the vine rows, factorially arranged with three cover-crop treatments in the middles. We studied soil compaction, moisture and runoff; vine and soil nutrition; soil microbial biomass and mycorrhizae; and grape yield and quality. The late-maturing 'Trios 102' triticale used more water during the vine growing season than the earlier maturing 'Merced' rye. Cover crops increased organic matter and microbial biomass in the middles and reduced sediment loss. Weed control treatments did not affect crop yield or soil nutritional and microbiological parameters, but cultivation increased soil compaction at 4 to 7 inches deep. Weed control strategies and cover crops must be chosen carefully to maximize benefits and minimize negative environmental impacts.
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Also in this issue:Tip Length Models for Major Commercial California Conifers
Wine grapes go green: The Sustainable Viticulture Story
Research fuels sustainable viticulture revolution
Nest boxes can attract wildlife to vineyards
Agro-environmental partnerships facilitate sustainable wine-grape production and assessment
Sidebar: Interest in organic winegrowing is increasing
Innovative outreach increases adoption of sustainable winegrowing practices in Lodi region
Decision support tool seeks to aid stream-flow recovery and enhance water security
Sidebar: Collaborative conservation helps achieve regional water-quantity goals
Leafroll disease is spreading rapidly in a Napa Valley vineyard
Botryosphaeria-related dieback and control investigated in noncoastal California grapevines
Sidebar: Vine surgery tested as management strategy for
Vineyard managers and researchers seek sustainable solutions for mealybugs, a changing pest complex
Sidebar: Pomace management reduces spread of vine mealybugs
Sidebar: Studies needed of vectors spreading leafroll disease in California vineyards
Liquid baits control Argentine ants sustainably in coastal vineyards
Self-reseeding annual legumes evaluated as cover crops for untilled vineyards
Soil-landscape model helps predict potassium supply in vineyards
Vineyard nutrient needs vary with rootstocks and soils