Technical Report
 

Integrated Production: Increasing and Characterizing Biodiversity in Oregon Vineyards Evaluation of Botanical Diversity in Oregon Vineyards

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https://ir.library.oregonstate.edu/concern/technical_reports/z603r4657

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  • Soil and vineyard vegetation management are tools that may be used to create stable growing conditions for the grapevine roots and to preserve soil fertility for high grape quality in future years. The use of cover crops is commonly practiced in viticultural areas where precipitation exceeds 600-700 min (24-28 in) a year, because cover crops reduce soil erosion and surface water runoff on hillsides, maintain soil organic matter and nutrient levels in the soil, and slow the soil compaction process and subsequent loss of pore space. Cover crop plants and management practices should be selected carefully and adapted to the specific site and local weather conditions to ensure adequate vine growth, yield and grape quality. The composition and botanical diversity of the plant community are key elements in the agro-ecosystem 4 vineyard'. Botanical diversity is positively related to faunistic diversity (e.g. Remund et al., 1989). The general link between diversity and ecological stability is subject of numerous studies in the present. The objective of this study is to demonstrate and contrast effects of high botanical diversity versus low botanical diversity on grapevine performance. Additionally, an extended botanical survey was carried out in order to get a realistic number of resident plant species and to define 'high' botanical diversity for vineyards in the Willamette Valley.
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