@article {Morris145, author = {J. R. Morris and D. L. Cawthon}, title = {Effect of Irrigation, Fruit Load, and Potassium Fertilization on Yield, Quality, and Petiole Analysis of Concord (Vitis labrusca L.) Grapes}, volume = {33}, number = {3}, pages = {145--148}, year = {1982}, doi = {10.5344/ajev.1982.33.3.145}, publisher = {American Journal of Enology and Viticulture}, abstract = {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 v{\'e}raison 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.}, issn = {0002-9254}, URL = {https://www.ajevonline.org/content/33/3/145}, eprint = {https://www.ajevonline.org/content/33/3/145.full.pdf}, journal = {American Journal of Enology and Viticulture} }