RT Journal Article
SR Electronic
T1 Effect of Irrigation, Fruit Load, and Potassium Fertilization on Yield, Quality, and Petiole Analysis of Concord (<em>Vitis labrusca L.</em>) Grapes
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP 145
OP 148
DO 10.5344/ajev.1982.33.3.145
VO 33
IS 3
A1 J. R. Morris
A1 D. L. Cawthon
YR 1982
UL http://www.ajevonline.org/content/33/3/145.abstract
AB A 14-year old Concord vineyard which had received no potassium fertilization since establishment was fertilized with 0 or 450 kg/ha of K under two irrigation and two fruit load regimes. Supplemental irrigation from bloom to véraison increased yields and vine size. Juice soluble solids were reduced by irrigation in a year with near normal rainfall; but in a year of severe drought, soluble solids were improved by irrigation. Increased fruit loads reduced juice quality. Vines receiving K fertilization showed a response the first year of application through increased yeilds and vine size. Juice pH and K content were increased by K fertilization.