Effects of the Annual Nitrogen Fertilization Rate on Vine Performance and Grape Quality for Winemaking: Insights from a Meta-Analysis

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Normalized parameter</td><td class="align_center"><i>N</i><sub>max</sub> (g·plant<sup>−1</sup>)</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Total soluble solids</td><td class="align_center">1.5–3.0</td></tr><tr><td class="align_left">Titratable acidity</td><td class="align_center">2.3–3.1</td></tr><tr><td class="align_left">Hydrogen ion activity</td><td class="align_center">7.0–8.8</td></tr><tr><td class="align_left">Malic acid concentration</td><td class="align_center">2.0–2.1</td></tr><tr><td class="align_left">Tartaric acid concentration</td><td class="align_center">—</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Nitrogen rate interval featuring the maximum in the normalized parameter density surface as represented in Figure <a href="../fig6/">6</a> for the grape quality traits for which the Mitscherlich law or logistic curve could not be reasonably fitted.</div>

Australian Journal of Grape and Wine Research

tab5

Table 5

Table 5: Effects of the Annual Nitrogen Fertilization Rate on Vine Performance and Grape Quality for Winemaking: Insights from a Meta-Analysis 