بررسی تاثیر بهره برداری در ادامه حیات گیاه باریجه در شرایط مزرعه

The effect of making wounds (incision)on bulgy roots of Ferula gumosa was studied in order to find the survival rate and yield of. plants This project was conducted over 4 years in Houmand absard station . Different sizes of bulgy roots were collected from Lar valley in Tehran province then transplanted in to farm in Nov.1999.three treatments were selected including making incision 3,4 and 5 times on the bulgy roots of 40 samples for each one that chose by random in sizes and control(treatment without incision)in July and August 2002. The survival rate and the yield of gum in different treatment were measured the result showed that the yield gum had decrease with the increase of incision times ,average of production and survival in analysis variation compared . There is no significant difference between the numbers of treatments(incision)and also no significant differece between survival of them in compare with control treatment . The highst production belongs to the three times incicsion and the lowest production belongs to the five times . After transplanting the roots from natural site to farm for gum extraction ,more than two years rest for making new combium and also bulgy roots with more than 15 cm. In diameter are needed. Key words:Galbanum,utilization,survival