Some factors affecting the rooting of filbert hardwood cuttings

Abstract

This study was conducted to determine the effect of cutting age and diameter, collection time, IBA concentration, heating and base cut type on rooting of filbert (Cv. Tombul) hardwood cuttings. Concerning this aim, in the first experiment: one and two years old cuttings were collected in January and February, and divided into two groups in relation to their diameter, treated with 4000, 6000, and 8000 ppm IBA and then placed in a bottom heated rooting medium (25 degrees C +/- 2). In the second experiment: the cuttings were cut slope and nat at their base, and placed in the rooting medium after had been treated with 4000 and 6000 ppm IBA. In the third experiment: the cuttings which treated with 4000 and 6000 ppm IBA were placed in both heating (25 degrees C +/- 2) and non heating (15 degrees C +/- 2) rooting medium. Macro and micro elements, and carbohydrate content of bark of the cuttings were also determined in relation to their rooting capacity. In spite of rooting which slightly better results were obtained from heating medium (max. 20.0%) in some samples, callus formation was significantly better in non heating medium (max 96.6%) with 1 year old cuttings. There was no relationship between the chemical composition of the bark tissue and the rooting.