The Performance of Some Walnut (Juglans regia) Cultivars in the Conditions of Bursa, Turkey

The present study aimed to evaluate the pomological and phenological traits, as well as yield potential and incidence of external defects of some local (‘Bilecik’, ‘Maraş 12’, ‘Maraş 18’, ‘Şebin’, ‘Şen 1’) and foreign (‘Chandler’, ‘Fernette’, ‘Fernor’, ‘Howard’, ‘Pedro’, ‘Serr’) walnut cultivars gro...

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Main Authors: Özlem Utku, Mevlüt Batuhan Koşar, Cevriye Mert, Dilan Ahı Koşar, Umran Ertürk
Format: Article
Language:English
Published: Ankara University 2023-03-01
Series:Journal of Agricultural Sciences
Subjects:
Online Access:https://dergipark.org.tr/tr/download/article-file/2315965
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author Özlem Utku
Mevlüt Batuhan Koşar
Cevriye Mert
Dilan Ahı Koşar
Umran Ertürk
author_facet Özlem Utku
Mevlüt Batuhan Koşar
Cevriye Mert
Dilan Ahı Koşar
Umran Ertürk
author_sort Özlem Utku
collection DOAJ
description The present study aimed to evaluate the pomological and phenological traits, as well as yield potential and incidence of external defects of some local (‘Bilecik’, ‘Maraş 12’, ‘Maraş 18’, ‘Şebin’, ‘Şen 1’) and foreign (‘Chandler’, ‘Fernette’, ‘Fernor’, ‘Howard’, ‘Pedro’, ‘Serr’) walnut cultivars grown in Bursa (north-west in Turkey) conditions between 2014 and 2020. The first leafing was observed in Maraş 12, Serr, Şebin, and Maraş 18 cultivars, while Fernette and Fernor were the last leafing cultivars. The female blooming period of the cultivars was recorded to be the longest in Maraş 18 (15 days) and Şebin (16 days) and that was the shortest in Bilecik and Serr (10 days). The male blooming period was recorded as the longest in Chandler, Fernette, Bilecik, and Şebin (16-18 days) and that was the shortest in Maraş 12 and Serr (10 days). The average yield per tree of cultivars ranged between 1.87 kg (Şebin) and 14.21 kg (Pedro). Walnut blight was observed on average in 15.85%, sunburn in 10.21%, codling moth in 5.11%, anthracnose in 3.23%, and bird damage in 2.35% of the fruits. The healthy nut percentage ranged from 40.06% (Şen 1) to 76.50% (Chandler). The nut weight of cultivars was between 9.91 g (Maraş 12) and 16.27 g (Şen 1). Kernel percentage varied from 36.31% (Şen 1) to 53.56% (Maraş 12). The principal component analysis conducted to distinguish the cultivars suggests that the most important factors could be reduced to five components. The results showed that Maraş 12, Chandler, Fernor, and Howard were suitable cultivars for commercial cultivation in Bursa conditions.
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publishDate 2023-03-01
publisher Ankara University
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series Journal of Agricultural Sciences
spelling doaj-art-e72eba48a62345dfa4b790ae88ecb1eb2025-08-20T03:04:11ZengAnkara UniversityJournal of Agricultural Sciences1300-75802148-92972023-03-0129258960310.15832/ankutbd.108936545The Performance of Some Walnut (Juglans regia) Cultivars in the Conditions of Bursa, TurkeyÖzlem Utku0Mevlüt Batuhan Koşar1Cevriye Mert2Dilan Ahı Koşar3Umran Ertürk4Yalova Atatürk Bahçe Kültürleri Merkez Araştırma EnstitüsüBURSA ULUDAĞ ÜNİVERSİTESİ, ORHANGAZİ MESLEK YÜKSEKOKULU, PARK VE BAHÇE BİTKİLERİ BÖLÜMÜBursa Uludağ Üniversitesi Ziraat Fakültesi Bahçe Bitkileri BölümüBursa Uludağ Üniversitesi Ziraat Fakültesi Bahçe Bitkileri BölümüBURSA ULUDAĞ ÜNİVERSİTESİ ZİRAAT FAKÜLTESİ BAHÇE BİTKİLERİ BÖLÜMÜThe present study aimed to evaluate the pomological and phenological traits, as well as yield potential and incidence of external defects of some local (‘Bilecik’, ‘Maraş 12’, ‘Maraş 18’, ‘Şebin’, ‘Şen 1’) and foreign (‘Chandler’, ‘Fernette’, ‘Fernor’, ‘Howard’, ‘Pedro’, ‘Serr’) walnut cultivars grown in Bursa (north-west in Turkey) conditions between 2014 and 2020. The first leafing was observed in Maraş 12, Serr, Şebin, and Maraş 18 cultivars, while Fernette and Fernor were the last leafing cultivars. The female blooming period of the cultivars was recorded to be the longest in Maraş 18 (15 days) and Şebin (16 days) and that was the shortest in Bilecik and Serr (10 days). The male blooming period was recorded as the longest in Chandler, Fernette, Bilecik, and Şebin (16-18 days) and that was the shortest in Maraş 12 and Serr (10 days). The average yield per tree of cultivars ranged between 1.87 kg (Şebin) and 14.21 kg (Pedro). Walnut blight was observed on average in 15.85%, sunburn in 10.21%, codling moth in 5.11%, anthracnose in 3.23%, and bird damage in 2.35% of the fruits. The healthy nut percentage ranged from 40.06% (Şen 1) to 76.50% (Chandler). The nut weight of cultivars was between 9.91 g (Maraş 12) and 16.27 g (Şen 1). Kernel percentage varied from 36.31% (Şen 1) to 53.56% (Maraş 12). The principal component analysis conducted to distinguish the cultivars suggests that the most important factors could be reduced to five components. The results showed that Maraş 12, Chandler, Fernor, and Howard were suitable cultivars for commercial cultivation in Bursa conditions.https://dergipark.org.tr/tr/download/article-file/2315965phenologyyieldfruit characteristicsexternal defectsleafingblooming
spellingShingle Özlem Utku
Mevlüt Batuhan Koşar
Cevriye Mert
Dilan Ahı Koşar
Umran Ertürk
The Performance of Some Walnut (Juglans regia) Cultivars in the Conditions of Bursa, Turkey
Journal of Agricultural Sciences
phenology
yield
fruit characteristics
external defects
leafing
blooming
title The Performance of Some Walnut (Juglans regia) Cultivars in the Conditions of Bursa, Turkey
title_full The Performance of Some Walnut (Juglans regia) Cultivars in the Conditions of Bursa, Turkey
title_fullStr The Performance of Some Walnut (Juglans regia) Cultivars in the Conditions of Bursa, Turkey
title_full_unstemmed The Performance of Some Walnut (Juglans regia) Cultivars in the Conditions of Bursa, Turkey
title_short The Performance of Some Walnut (Juglans regia) Cultivars in the Conditions of Bursa, Turkey
title_sort performance of some walnut juglans regia cultivars in the conditions of bursa turkey
topic phenology
yield
fruit characteristics
external defects
leafing
blooming
url https://dergipark.org.tr/tr/download/article-file/2315965
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