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

Figure 3

Density surfaces of the scatter plots in Figure 2 for the trial-normalized vine production parameters against the annual nitrogen rate. (a) Grape yield. (b) Pruning weight. (c) Bunch number. (d) Bunch weight. (e) Berry number. (f) Berry weight.

(a)

(b)

(c)

(d)

(e)

(f)