PT  - JOURNAL ARTICLE
AU  - Goheen, A. C.
AU  - Cook, James A.
TI  - Leafroll (Red-Leaf or Rougeau) and Its Effects on Vine Growth, Fruit Quality, and Yields
AID  - 10.5344/ajev.1959.10.4.173
DP  - 1959 Jan 01
TA  - American Journal of Enology and Viticulture
PG  - 173--181
VI  - 10
IP  - 4
4099  - http://www.ajevonline.org/content/10/4/173.short
4100  - http://www.ajevonline.org/content/10/4/173.full
SO  - Am J Enol Vitic.1959 Jan 01; 10
AB  - Transmission experiments indicate that the disorder known as red leaf in California and variously as rougeau, flavescence, or brunissure in France is probably grape leafroll.Leafroll causes affected vines to develop more slowly than healthy vines. It causes fruit sugar at harvest to be generally lower than that from healthy vines. This difference is not apparent in early summer. In unirrigated vineyards yields are about one third of those of healthy vines. Wood production is also reduced, and fruit clusters are fewer and smaller.