RT Journal Article
SR Electronic
T1 Control of Botrytis Bunch Rot of Ripening Grapes: Timing Applications of the Dicarboximide Fungicides
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP 167
OP 172
DO 10.5344/ajev.1983.34.3.167
VO 34
IS 3
A1 R. C. Pearson
A1 D. G. Riegel
YR 1983
UL http://www.ajevonline.org/content/34/3/167.abstract
AB Various dicarboximide fungicides at 0.84 kg to 1.12 kg (active ingredient)/ha when applied first at 5° to 7° Brix and then two weeks later, provided a high level of control of Botrytis bunch rot (Botrytis cinerea Pers.) of ripening grapes in New York State. Control was rarely improved by making two additional applications at 5% or 90% bloom and at bunch closing. Control provided by two late season applications of vinclozolin was improved significantly when an early season treatment of gibberellic acid at 25 mg/L was included. The use of only two sprays per season may lessen the selective pressure by these fungicides and thereby delay development of fungicide-resistant strains.