Technical Report
 

Alleyway Cover Crops Have Little Influence on 'Pinot noir' Performance

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https://ir.library.oregonstate.edu/concern/technical_reports/00000111q

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  • Competition between ‘Pinot noir’ grapevines and alleyway cover crops was evaluated in two commercial vineyards in western Oregon. Seven cover crop treatments including a clean-cultivated control were applied in the fall of 2003 and their impact on vines was monitored in 2004 and 2005. Competition with grapevines was assessed by measuring soil moisture, vine growth, vine water status, vine nutrient status, yield, and must quality over two years with typical weather patterns for the region. Despite large treatment differences in cover crop biomass and N contributions to the soil from mowed residues, cover crops had little measurable influence on vine growth or fruit quality. Small differences in alleyway soil water content, leaf nitrogen, and juice YANC were found between different treatments; however, no cover-cropped treatment differed from the clean-cultivated control. Alleyway cover crops managed by spring and summer mowing do not appear to compete significantly with established ‘Pinot noir’ grapevines in western Oregon vineyards. Therefore, advantages of using cover crops (e.g. protection against soil erosion and addition to soil organic matter) can be realized without impacting vine productivity or juice quality. The long term impact of certain cover crops, including the clover mix we used, could result in the supply of too much N to vines and this aspect should be further examined.
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  • Sweet, R., & Schreiner, R. P. (2007). Alleyway Cover Crops Have Little Influence on ‘Pinot noir’ Performance.
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