Effects of Branch Number on Quality Traits and Yield Properties of European Hazelnut ( Corylus avellana L.)

Tuba Bak and Turan Karadeniz
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Tuba Bak: Crop and Animal Production Department, Mudurnu Süreyya Astarcı Vocational School, Bolu Abant İzzet Baysal University, Mudurnu, Bolu 14800, Turkey
Turan Karadeniz: Department of Horticulture, Faculty of Agriculture, Bolu Abant İzzet Baysal University, Bolu 14030, Turkey

Agriculture, 2021, vol. 11, issue 5, 1-10

Abstract: Despite being the world leader in the production of hazelnuts, Turkey’s nut yield per hectare is quite behind other producer countries. The main reasons for low yield are the completion of the economic life of hazelnut orchards and the lack of pruning following the technique. Hazelnuts are being grown with the ‘ocak’ system in Turkey. The ocak system is a bush-like growing technique that does not contain the main trunk but consists of shoots instead. It is necessary to maintain the optimum number of shoots per ocak to increase yield and quality in this system. The effects of different branch numbers on yield and fruit quality parameters of ‘Tombul’ and ‘Palaz’ hazelnut cultivars were investigated in Ordu ecological conditions. ‘Palaz’ had the highest yield per ocak in 8 branches (1460.19 g), while ‘Tombul’ had in the 5 branched ocak (2170.47 g). ‘Palaz’ and ‘Tombul’ had the highest fruit weights in 4 and 4–6 branches, respectively. The highest oil ratio of ‘Palaz’ was observed in 4 branches, while ‘Tombul’ had the highest in 5 branches. The highest kernel ratio was determined in 6 and 5 branches in ‘Palaz’ and ‘Tombul’, respectively. The ocaks with 4 and 5 branches were mostly expressed higher values, and it is foreseen that the number of branches should not exceed 6 to reduce the competition of the branches and to obtain good quality products.

Keywords: hazelnut; branch removal; yield; fruit quality; ‘ocak’ (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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