Determination Size Distribution of Shredded Vineyard Pruning Residues According to Variety

Abstract

In this study, it was aimed to determine the particle size distribution of vineyard pruning residues shredded with a shredding machine according to grape variety. Pruning residues of three grape varieties, respectively, Boğazkere, Öküzgözü and Şire were used for the experiments. For shredding experiments, a wood chipper machine powered by a 15 HP thermal engine was used. Trials were conducted at three different engine speeds (1500 rpm, 2000 rpm, 2500 rpm). There are 3 shredding blades on the chopper unit of the machine. The blades are driven by gasoline engine with the a belt and pulley system. The study was carried out at three different blade rotation speed. Particle size distribution was determined for each rotation speed and grape variety. Sieves with diameters of 12.5-50 mm were used to calculate the particle size distribution. According to the results, an inverse relationship was obtained between the blade rotation speed and the size length of the shredded branches for all varieties. The ratio of the size and length of the chopped/chopped residues passing through the sieves varied according to the blade speeds. Also, the significant difference were found between varieties (p