RT Journal Article SR Electronic T1 Some Measurements of Cation-Exchange Capacity of Grape Roots JF American Journal of Enology and Viticulture JO Am J Enol Vitic. FD American Society for Enology and Viticulture SP 174 OP 178 DO 10.5344/ajev.1960.11.4.174 VO 11 IS 4 A1 Lloyd A. Lider A1 Gary W. Sanderson YR 1960 UL http://www.ajevonline.org/content/11/4/174.abstract AB The cation exchange capacity of roots of several grape species and species hybrids was determined, the values being expressed on a dry weight basis as me/100 gms. The relationships among the C.E.C., the vegetative vigor and the root appearance of the experimental plants are discussed. The average nutrient levels for scion varieties on several of the hybrid rootstocks in field trials in California are presented and these are compared with the C.E.C. of the stocks concerned.