Effect of late season boron spray on boron accumulation and fruit set of Summit AND Hedelfinger sweet cherry (Prunus avium L.)
2007
Usenik, V. | Stampar, F.
The influence of late-season boron (B) application on the bud B concentration and fruit set was studied in sweet cherry (Prunus avium L.). The experiment was carried out on 5-year-old Summit and Hedelfinger trees on rootstock Gisela 5 in Fruit Growing centre Gacnik. Trees were sprayed with B (1% Bortrack) or water (control). Differences in B concentration were measured between cultivars, the highest content in Hedelfinger buds. Boron application resulted in increased B concentration in flower buds. Fruit set was influenced with cultivar, boron application and micro location. Fruit set was statistically higher in Hedelfinger than in Summit trees. The results showed that B fertilization had no effect on fruit set of Summit despite increased concentration of boron by 94.8% in dormant flower buds. Foliar boron spraying of Hedelfinger was effective in increasing B concentration (by 157.2%) and fruit set on half trees.
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