Determination of the Effects of Aminoethoxyvinilglycine (AVG) and Gibberellic Acid (GA3) Applications on Pre-Harvest Fruit Drop Amount and Fruit Quality in Hakko Pear Cultivar

Year 2024, Volume: 7 Issue: 6, 3 - 4

Yasin Ay , Selma Boyacı

https://doi.org/10.47115/bsagriculture.1537258

Abstract

This study was conducted to determine the effects of pre-harvest Aminoethoxyvinylgylcine (AVG) and Gibberellic acid (GA3) applications on the pre-harvest fruit drop amount and fruit quality in the 'Hakko' pear (Pyrus pyrifolia) cultivar grafted on BA29 rootstock in a private orchard in the Bala district of Ankara in 2021-2022. It was conducted in an orchard belonging to a producer. 50-100-150 mg/l AVG and 25-50-75 mg/l GA3 were applied 4 weeks before the estimated harvest date. Fruits are harvested at full maturity date; Pomological properties such as cumulative drop percentage, yield, fruit weight, fruit width and length, fruit stem width and length, fruit flesh firmness, fruit color, and chemical properties such as soluble solids content (SSC), pH and titratable acidity (TA) were evaluated. It was observed that all doses of AVG and GA3 during the harvest period reduced the cumulative casting rate compared to the control application (6.78%). In general, the yield per tree was found to be high in GA3 applications. In both AVG and GA3 applications, its effects on fruit weight, fruit width and length, fruit flesh firmness, SSC and pH were found to be statistically significant. It was observed that in both AVG and GA3 applications, the amount of fruit drop pre-harvest decreased and fruit quality characteristics were better than the control.

Keywords

Preharvest drop, Fruit quality, Growth regulators

Supporting Institution

Kırşehir Ahi Evran University Scientific Research Projects

Project Number

ZRT.A4.21.005

Thanks

This research was supported by Kırşehir Ahi Evran University Scientific Research Projects with project number ZRT.A4.21.005.

References

• Anonymous 2023. World pear production statistics URL: https://www.fao.org/home/en (accessed date: October 10, 2023).
• Boyacı S. 2022. Effect of Aminoethoxyvinylglycine (AVG) applications on pre-harvest drop and fruit quality of Red Delicious, Red Chief apple cultivar. ErwerbsObstbau, 64:395–400.