DETERMINING THE CHILLING REQUIREMENTS AND GROWING DEGREE HOURS OF SOME PISTACHIO NUT CULTIVARS AND REGIONS
The aim of the second experiment was to determine the chilling durations and growing degree hours of the experimented pistachio areas to clerify the suitability of the cultivars to those regions. The chilling durations of Gaziantep, Sanliurfa and Ceylanpinar which are the main pistachio growing areas were found sufficient for the budbreak of the major cultivars. Also, Senir seems to be promising pistachio area in very near future. The total growing degree hours of the experimental areas were the least in Ceylanpinar (around 61000), and it was followed by Senir and Gaziantep with 65000 GDH values. The total GDH values of Sanliurfa was about 68000 and it was followed by Adana with 76000 GDH in summers to get filled and hulled nuts.