Morris, J. R., and D. L. Cawthon.
"Effect of Irrigation, Fruit Load, and Potassium Fertilization on Yield, Quality, and Petiole Analysis of Concord (Vitis labrusca L.) Grapes." American Journal of Enology and Viticulture
33.3
(1982):
145-148.
Web. 29 Mar. 2024.