Robert Pool
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View article: Absorption and translocation of gibberellic acid in the grapevine
Absorption and translocation of gibberellic acid in the grapevine Open
• Studies were made on the absorption and translocation patterns of nonradioactive gibberellin and carbon-14-gibberellin. • When the mature leaves of young shoots of Zinfandel or the stem and the leaf axils were sprayed with nonradioactive…
View article: Response of Thompson Seedless grapes to prebloom thinning
Response of Thompson Seedless grapes to prebloom thinning Open
• Paired treatments with and without application of GA at bloom were applied to Thompson Seedless vines that were • cluster-thinned at prebloom, and berrythinned at shatter, • cluster-thinned and berry-thinned at prebloom, or • cluster-thi…
View article: Relation of plant regulators to bud rest in Vitis vinifera grapes
Relation of plant regulators to bud rest in Vitis vinifera grapes Open
A large varietal difference was noted in time required for grape buds to terminate rest. 'Pearl of Csaba' and seedless varieties terminated rest most rapidly. Exogenous applications of benzyladenine (BA) at 1000 ppm or of N-dimethylamino s…
View article: Chemical thinning of grape clusters (Vitis vinifera L.)
Chemical thinning of grape clusters (Vitis vinifera L.) Open
Twelve thinning compounds were tested at 0.1 to 4,000 ppm on 'Carignane' and 'Thompson Seedless' clusters at 4 developmental stages (prebloom, bloom, fruit-set, and 2 weeks after fruit-set). Clusters were usually least sensitive to the com…
View article: Effect of time of thinning on berry size of girdled, gibberellin-treated 'Thompson Seedless' grapes
Effect of time of thinning on berry size of girdled, gibberellin-treated 'Thompson Seedless' grapes Open
Gibberellin-treated 'Thompson Seedless' grapes were thinned at initiation of berry shatter following bloom or at 1 to 6 weeks thereafter. The results indicate that for maximum increase in berry size, thinning should be done during fruit-se…
View article: Influence of cluster exposure on fruit composition and wine quality of Seyval blanc grapes
Influence of cluster exposure on fruit composition and wine quality of Seyval blanc grapes Open
Experiments were conducted in 1981 and 1982 to investigate the influence of duster exposure on fruit composition, wine quality, and incidence of bunch rot (Botrytis cinerea PERS.) of the French-American hybrid grape cultivar Seyval blanc. …
View article: Use of differential thermal analysis to quantify bud cold hardiness of grape selections and clones
Use of differential thermal analysis to quantify bud cold hardiness of grape selections and clones Open
Differential thermal analysis (DTA) was used to characterize primary bud mid-winter cold hardiness of Vitis spp. Bud hardiness reached a maximum and was rather stable during the months of January and February at Geneva, New York. Because c…