Abstract
Objective: Narince grapes cultivar's both leaf and grape are commercially evaluated in Tokat region. This study was conducted in 2015 and 2016, It is aimed to determine the effects of picking frequency of brine vine leaf in Narince cultivar on cane development and winter bud fertility were aimed to be determined.
Materials and Methods: In the first year, vine leaves were collected at four different levels (0, 2, 4 and 6 periods). In the second year, cutting weights, cutting diameters, cutting length, dry matter rates, bud fertility and low-temperature tolerance datas were determined in vine cane. In treated grapevines, bud fertility was examined based on 10 nodes for their positions by shooting method in the stratification room.
Results: The control and six times leaf picking practices affected bud fertility and dry matter rate negatively. The highest number of clusters was detected in the 5th and 6th (1.375 and 1.475 clones / node) nodes. Two and four times leaf picking practices have affected positively bud fertility. It was determined the average cutting weight, cutting length and cutting diameter in 10-noded cuttings; 64.12 g - 44.15 g; 74.89 cm-64.00 cm; 8.81 mm-7.71 mm, respectively. The average number of clusters in buds ranged from 1.215 (2 times leaf pickings) to 0.97 (6 time leaf pickings).
Conclusion: As a result, In terms of shoot development and bud fertility, it has been suggested leaf picking at maximum 4 times in leaf collected vineyards.