RT Journal Article
SR Electronic
T1 Correction of Zinc Deficiency in California Vineyards by Soil Treatment
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP 223
OP 229
DO 10.5344/ajev.1963.14.4.223
VO 14
IS 4
A1 James A. Cook
A1 Howard L. Malstrom1
YR 1963
UL http://www.ajevonline.org/content/14/4/223.abstract
AB Zn-EDTA and zinc sulfate at 150 and 750 lb per acre, respectively, were used as soil treatments to correct zinc deficiency of grapes on a sandy, neutral soil with relatively low fixing power for zinc. Both resulted in striking increases in fruit production. Although tissue analysis 9 years later showed higher zinc levels in treated vines, the practical effect on yields ended 3 years after treatment.A one-year Zn-EDTA foliage spray treatment also resulted in greatly increased fruit yield, but without zinc treatment the following year, the second-year yields were appreciably lower than those from control plots.Effects of lower soil treatment rates and factors affecting foliar absorption need further investigation.