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Influence of elevation and slope on Touriga Nacional yield and juice composition

<p>In the sloped terraces of the Douro region, higher elevations with southern exposures improved the amount of phenolic compounds at the cost of lower yields, whereas lower elevations with northern exposures increased yields but lowered phenolic quality. These Portuguese authors found that elevations around 330 to 660 feet coupled to southern exposures offered the best compromise.</p><p>&nbsp;</p><p>The full text is published in the <em>Journal of Vine and Wine Sciences</em>, not available online </p>

200 influence of elevation and slope on yield and juice composition.pdf