The effect of organic fertilizers applied to some walnut (Juglans regia L.) varieties on fruit quality

Walnut is one of the fruits that has been cultivated for many years in our country and in the world, is used in many areas and is loved and consumed. This study was carried out at an average altitude of 900 m in the Yeşilyayla neighborhood of Kula district of Manisa province in 2019. In this study, some fruit quality characteristics of local walnut cultivars Bilecik, Kaman-1 and Şebin, where Solid Vermicompost, Liquid Worm Fertilizer, Solid Sheep Wool Pellet, Liquid Sheep Wool Pellet, Solid Seaweed and Liquid Seaweed fertilizers were applied from the soil were investigated. 20 fruits were selected for each application in each variety. As a result of the study, the fruits with the highest fruit weight were obtained with an average of 11.85 g as a result of the application of Solid Vermicompost in Sebin variety, the fruits with the highest internal weight were found in Kaman-1 variety with 7.10 g, as a result of the Liquid Sheep Wool Pellet application, the fruits with the highest internal yield were observed in the Solid Seaweed application of Kaman-1 variety with a rate of 62.04%, the highest protein ratio was found in Kaman-1 variety with 30.54% as a result of Liquid Worm Fertilizer application, it was observed that the highest amount of Phenolic Compound was obtained as a result of the application of Bilecik liquid Sheep Wool Pellet with 1145 ppm. In addition, in this study, it was observed that the organic fertilizers that most affect fruit quality characteristics are solid vermicompost, liquid vermicompost and liquid seaweed.