Effect of colemanite boron fertilization on hazelnut (Corylus avellana L.) yield and nutrient concentration of leaf
In this research, the effect of boron fertilization on leaf mineral concentration, nut yield and percent kernel in 'Tombul' hazelnut was determined. The experiment in a randomized complete block design was carried out in a farm orchard with soil B concentration of 0.02 mg kg-1 in Çarşamba-Samsun location in 2013 and 2014 using boron fertilizer of colemanite source. Boron fertilization was carried out as 6 g B ocak-1 (T1) and 12 g B ocak-1 (T2), along with the control (T0). Supplying doses of colemanite (T1 and T2) resulted in an increase in nut yield in both years, in comparison to the control. The yield increase due to boron application in the first year was statistically nonsignificant. In the second year, boron fertilization caused a significant yield increase from 55.5 kg da-1 in the control plot to 69.2 and 72.4 kg da-1 in T1 and T2 applications, with a 24.7 and 30.4% yield increase, respectively. As a result of increasing doses (T1 and T2) of B fertilization of colemanite source, increases in nut yield were determined. 6 g B ocak-1 soil colemanite application produced significant yield increases in both years as compared to the control and percent kernel, these increased from 48 to 52%, and from 46 to 50% in the first and second year with 8.3 and 8.6% increases, respectively. In hazelnut orchards with boron deficiency, boron fertilization increased the cluster formation, nut yield and percent kernel, decreasing empty hazelnuts.
Özkutlu, F., Aygün, A., Korkmaz, K., Akgün, M., Ete, Ö., Şahin, Ö., Özcan, B. and Taşkin, B. (2018). Effect of colemanite boron fertilization on hazelnut (Corylus avellana L.) yield and nutrient concentration of leaf. Acta Hortic. 1226, 265-272
hazelnut (Corylus avellana L.), boron, yield, percent kernel