Early Leaf Removal Increases Berry and Wine Phenolics in Cabernet Sauvignon Grown in Eastern Serbia

Cluster zone leaf removal is a well-established viticulture practice for improving cluster microclimate and wine quality in cooler climates, while its efficacy warmer conditions less known. Here we compared the effect of early (ELR, after fruit set; diameter berries 3–5 mm) late (LLR, beginning veraison) on berry composition phenolic profile grapevine (Vitis vinifera L.) variety Cabernet Sauvignon grown temperate, region Eastern Serbia. Compared to control (no removal), both treatments increased sugar content fresh juice alcohol concentration wine. Over three consecutive years (2011–2013) markedly different temperature rainfall, ELR was clearly most effective decreasing weights one berry, increasing skin share berry. The total phenols, tartaric acid esters, anthocyanins, flavanols highest treatment. prominently modified profile: Increasing flavanols, myricetin quercetine wine, peonidin-3-glucoside delphinidin-3-glucoside This work demonstrated that positively influenced chemical might be recommended temperate warm conditions.