Open access
Sep 2026
Trellis, rootstock, and nitrogen effects on Sunpreme, a natural dry-on-vine raisin grape variety
From 2021 to 2023, the effects of trellis type (two-wire “T” versus high single wire), rootstock (own-rooted, Freedom, or 1103P), and annual nitrogen fertilizer application rate (40 versus 80 lbs N/acre) were evaluated in the San Joaquin Valley to determine impacts on Sunpreme productivity, raisin quality and mineral n...
M. Fidelibus, G. Zhuang, B. Ordoñez et al.
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