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Compendium of grape diseases.
Compendium of grape diseases , Compendium of grape diseases , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
Scaphoideus titanus, a possible vector of grapevine yellows in New York
Scaphoideus titanus, the natural vector of grapevine flavescence doree (FD), is widespread in New York. It was found closely associated with both wild Vitis riparia and cultivated V. vinifera, but itExpand
Effects of Powdery Mildew on Vine Growth, Yield, and Quality of Concord Grapes.
Vitis labruscana 'Concord' is a widely planted grape cultivar grown in the United States for processing into juice and other products. Concord fruit are sporadically but sometimes severely damaged byExpand
Germination of ascospores and infection of Vitis by Uncinula necator.
Ascospores of Uncinula necator were released from cleistothecia periodically from November (leaf fall) to May (bud break) by fracturing the ascocarp wall and allowing the spores to be discharged ontoExpand
Parasitism of Uncinula necator cleistothecia by the mycoparasite Ampelomyces quisqualis.
Parasitism of Uncinula necator cleistothecia by the mycoparasite Ampelomyces quisqualis was widespread in the Vitaceae around New York State. Although A. quisqualis did not survive in naturallyExpand
Distribution and retention of cleistothecia of Uncinula necator on bark of grapevines.
Clesitothecia of Uncinula necator were dispersed by late summer and early autumn rain to the bark of grapevines. Rain-dispersed ascocarps accumulated rapidly on bark during a 10-wk period and wereExpand