Terminology of fruit set and fruit drop of sour cherry cultivars

G H Davarynejad,J Nyéki,Z Szabó,M Soltész,J Tornyai

doi:10.31421/ijhs/15/4/837

Abstract

Fruit set and fruit drop rates of 9 sour cherry cultivars (‘Érdi bôtermő’, ‘Debreceni bőtermő’, ‘Kántorjánosi’, ‘Újfehértói fürtös’, ‘Éva’, ‘Petri’ ‘Oblocsinszka’, ‘Pandy 279’ and ‘Csengôdi’) of eight years-old trees grown in Újfehértó, located in the Eastern north part of Hungary which grafted on Prunns mahaleb have been studied. Significant differences have been found in fruit set among cultivars. The average percentage of fruit set was 18.3%, which the ‘Oblacsinszka’ by 32.6% the highest fruit set, while ‘Debreceni bőtermő’ is very similar to ‘Pandy279’ showed lowest (12%) fruit set. Seasonal changes of fruit set and drop shows that there are four abscission peaks. The first fruit abortion wave appears during second week after pollination Thereafter, the second and third dropping period was found during the third and forth weeks after pollination. The forth abscission happened on the forth week after pollination. The highest fruit drop happened on ‘Pandy279’ (92.4%) very similar to ‘Éva’ (90%) while the lowest fruit drop observed in ‘Oblocsinszka’ (71.5%)

Highlights

Yield is determined to a large extent by fruit set and fruit drop ratio
They explained that in apple, fruit yield depends on the fruit set percentage and the amount of fruit drop
Study was conducted on nine sour cherry cultivars Érdi bôtermô, ‘Debreceni bôtermô’, Kántorjánosi, Újfehértói fürtös, Éva, ‘Petri’, ‘Oblocsinszka’, ‘Pándy 279’and ‘Csengôdi’ of eight years-old trees which grown in Újfehértó, located in the Eastern north part of Hungary were observed and determined

Summary

Introduction

Yield is determined to a large extent by fruit set and fruit drop ratio. In sour cherry orchards adequate yield is anticipated if pollination and fertilization process to be adequate. Drop of flower and fruits is common problem in most of the fruit crops, fruits continue to drop at various stage of development (Davarynejad et al 1993; Nyéki et al 2003) explained that not always the fruit drop is unpleasant, but drop of fruits at the initial stages of fruit development seems to be necessary, since fruit drop at initial stage saves tree from exhaustion. They explained that in apple, fruit yield depends on the fruit set percentage and the amount of fruit drop. Flower drop on sour cherry can be due to several plant pathology or pest problems (Holb et al, 2005; Holb & Schnabel, 2005)

Methods

Findings

Discussion

Conclusion