EFFECT OF AUXIN-SYNERGISTIC PREPARATION (NEVIROL 60 WP) ON FLOWERING DATE AND YIELD OF SOUR-CHERRY AND EUROPEAN PLUM FRUITS IN HUNGARY
The authors investigated the reaction of four sour-cherry (Debreceni bőtermő, Érdi bőtermő, Meteor korai, Újfehértói fürtös) and three European plum cultivars (Besztercei, Cacanska Lepotica, Stanley) to an auxin-synergistic preparation (Nevirol 60 WP). Spray applications were carried out at the 50% flowering stage of the trees. Application of the regulator increased the longevity/viability of the stigma and supported better pollination. The date of the end of flowering was deferred 2.2 days on average in the cases of sour-cherry cultivars, and 1.0-1.5 days on European plum cultivars. The treatment resulted in a 27-35% increase in fruit setting on sour-cherry, and 15-24% on plums. In the case of the sour-cherry cultivars the ratio of clusters with high numbers of fruits (3-4 fruit/bunch) was increased. In accordance, the yield was enlarged by about 22% in the case of sour-cherry cultivars and 15% on European plum cultivars. The increase of yield was not in close corellation to increases of fruit setting in all cases, because some fruits shrivelled or dropped as a consequence of oversetting in certain cases. Fruit quality parameters were also studied, including fruit weight, fruit diameter, soluble solids and sugar contant.
Racsko, J., Holb, I., Szabo, Z., Thurzo, S., Dren, G. and Nyeki, J. (2006). EFFECT OF AUXIN-SYNERGISTIC PREPARATION (NEVIROL 60 WP) ON FLOWERING DATE AND YIELD OF SOUR-CHERRY AND EUROPEAN PLUM FRUITS IN HUNGARY. Acta Hortic. 727, 279-282
sour-cherry, European plum, flowering, fruit set, fruit quality, Nevirol 60WP