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

不列颠哥伦比亚省酿酒葡萄理事会(BCWGC)协调、促进和资助关于 葡萄栽培和酿酒学，使不列颠哥伦比亚省酿酒葡萄业广泛受益，并代表种植者 在各种与农业有关的问题上。不列颠哥伦比亚省葡萄和葡萄酒行业的绝大多数人都加入了 BCWGC。目前，150家葡萄酒厂和321名葡萄种植者是BCWGC的成员。 不列颠哥伦比亚省的葡萄栽培面临许多挑战。寒冷的冬季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，卑诗省是加拿大的主要葡萄酒生产商，卑诗省葡萄酒的质量 已经得到了国际认可。葡萄栽培实践，如调整作物大小，对于维持 葡萄和葡萄酒生产。不列颠哥伦比亚省较短的生长季节需要较高的叶面积/作物重量比才能生长 优质葡萄比其他葡萄种植区更好，这些地区的生长季更长，而且 气候条件限制较少。白葡萄和葡萄酒的质量很大程度上受 葡萄组织中积累的芳香物质。特别是，萜类化合物决定了典型的 几种葡萄和葡萄酒的香气。最近在奥卡纳根葡萄园进行的试验表明，高产 大小(每英亩约6吨)会恶化芳香品种的葡萄和葡萄酒的香味。非常有限 关于白葡萄的最佳作物大小，特别是关于作物大小如何影响的信息是可用的。 浆果的成熟过程和浆果的成分。 在本项目中，我们将比较三个水平的作物大小，以及两次应用的处理 在Gewürztraminer葡萄园。我们将调查这些处理对浆果生长和生长的影响(S) 代谢(糖、酸、脱落酸和萜类)。这个项目的目标是确定卑诗省的种植者如何 可以控制作物的大小，以改善果实成熟和葡萄中萜类化合物的积累。

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.