Study on the Influence of Grafting Period and Environment Conditions Upon Walnut Grafting in Controlled Conditions (Plastic Greenhouse)

Abstract

The study was conducted during 2014-2017 to obtain planting material by grafting the walnut directly in solarium conditions. The grafting method used was chip budding. The two grafting periods were August (sleeping bud grafting) and April (growing bud grafting). The best results were obtained in the case of walnut grafting in April, when the temperature conditions, the relative humidity of the air and the intensity of the light are close to the optimal, in this case grafting success percent is between 39 and 57%. In the case of walnut grafting in August, the best results were obtained with the use of the grafted branches wrought one month before grafting (grafting success 24%). Cuvinte cheie: nuc, altoire, metoda de altoire, perioada de altoire, solar.