Crop size strategies for maximizing white grape quality in British Columbia vineyards

BC酿酒葡萄理事会（BCWGC）负责协调、促进和资助以下方面的研究和教育： 葡萄栽培和葡萄酒酿造，以广泛造福不列颠哥伦比亚省酿酒葡萄产业，并代表种植者 在各种与农业有关的问题上。BC省的绝大多数葡萄和葡萄酒行业都加入了 BCWGC。目前，150家酿酒厂和321名葡萄种植者是BCWGC的成员。 BC省的葡萄种植面临着许多挑战。寒冷的冬天和短暂的生长季节是严重的制约因素 用于葡萄种植。尽管如此，BC省是加拿大主要的葡萄酒生产国，BC省葡萄酒的质量 得到国际认可。葡萄栽培实践，如作物大小的调整是至关重要的， 葡萄和葡萄酒生产。不列颠哥伦比亚省的生长季节短，需要更高的叶面积/作物重量比的增长 优质葡萄比其他葡萄种植区所需的葡萄，那里的生长季节更长， 气候条件限制较少。白色葡萄和葡萄酒的质量受葡萄酒中葡萄糖含量的影响很大。 葡萄组织中积累的芳香剂。特别地，萜烯化合物决定了典型的 有几种葡萄和葡萄酒的香气。最近在奥卡诺根葡萄园的实验表明， 每英亩约6吨的葡萄干会使芳香品种的葡萄和葡萄酒的香气变差。非常有限 关于白色葡萄的最佳作物尺寸，特别是作物尺寸如何影响 浆果成熟过程和浆果组合物。 在这个项目中，我们将比较三个水平的作物大小，以及两次应用的处理 在一个琼瑶浆葡萄园我们将研究这些处理对浆果生长的影响， 代谢（糖、酸、脱落酸和萜烯）。该项目的目标是确定BC种植者如何 可以管理作物的大小，以改善果实成熟和葡萄中萜烯的积累。

The BC Wine Grape Council (BCWGC) coordinates, facilitates, and funds research and education on viticulture and enology to broadly benefit the British Columbia wine grape industry and to represent growers on a variety of agriculture-related issues. The vast majority of the BC grape and wine industry has joined the BCWGC. Currently, 150 wineries and 321 grape growers are members of the BCWGC. Viticulture in BC faces numerous challenges. Cold winters and a short growing season are serious constraints for grape cultivation. Nevertheless, BC is a major wine producer in Canada and the quality of BC wines has been internationally recognised. Viticultural practices such as crop size adjustments are critical to sustaining grape and wine productions. BC's short growing season requires higher leaf area/crop weight ratios to grow premium grapes than it is necessary in other viticultural regions, where the growing season is longer and the climatic conditions less limiting. The quality of white grapes and wines is strongly influenced by the amount of aromatics that are accumulated in the grape tissues. Particularly, terpene compounds determine the typical aroma of several grapes and wines. Recent experiments in Okanagan vineyards have indicated that high crop sizes (~6 tons per acre) can deteriorate the grape and wine aroma in aromatic varieties. Very limited information is available on the optimal crop size for white grapes and, particularly, on how crop size impacts the berry ripening process and berry composition. In this project, we will compare three levels of crop size, as well as two times of applications of the treatment in a Gewürztraminer vineyard. We will investigate the effect(s) of these treatments on berry growth and metabolism (sugars, acids, abscisic acid, and terpenes). The goal of this project is to identify how BC growers can manage crop size to improve both fruit ripening and the accumulation of terpenes in grapes.