Research Update from Winemakers Research Exchange – Fruit thinning experiments
David Eiserman2024-07-07T19:22:27-04:00Written by Dr. Ting, Compiled and Edited by Jess Trapeni A summary of two fruit thinning experiments involving shoulder thinning and cluster halving. Introduction Fertile Virginia soils can often produce vigorous grape vines with a heavy crop load that struggle to fully ripen. It is common practice to reduce crop load by pruning and cluster thinning to decrease shading and disease pressure, increase sunlight exposure, and encourage ripening. Crop reduction is also thought to improve overall vine balance and prevent stress that can lead to lower fruitfulness in subsequent years1. However, crop reduction comes at a measurable cost. In her landmark [...]