(Above).— Depletion of Concord vines by Clitocybe root rot in poorly drained end of vineyard. 
These vines continue to die out from year to year . , . . ._,__ 
(Below).—Full stand of thrifty Concord vines m well-drained end of vineyard shown above, the 
' undrained end being in the background. The rows are 520 feet in length a hdconttunon 1 yS2 vines 
The transition between the sickly vines at one end and the vigorous ones at the other was rather 
abrupt 
