Effect of different Cutting Methods on regeneration and Gum Yield of Ferula assa foetida in field and natural conditions
2012
Gholami, Barat Ali | Askarzadeh, Mohammad Ali | Gazanchiyan, Ali | Lotfi, Mohammad Reza | Negari, Abdoll karime | Shahrokhian, Abdoll karime
Ferula assa foetida is a medicinal and industrial plant and it is important in arid and semi arid areas of Khorassan province. The gum is extracted for medicinal industry and its export is considerable. At the present time; area of F. assa foetida is limited due to over exploitation and lack of suitable methodology. The objective of this study was to evaluate the effects of different cutting methods (conventional, cut of crown part, concave and surface) and harvest intervals (5, 10 and 15 times) on gum yield in two different habitats (Chalpo in Kashmar and Mazar in Bajestan). The experiment was conducted using factorial combination as completely randomized design with three replicates on 10 plants for each treatment. The result showed that significant differences occurred among cutting methods and harvest intervals (p0.01). The highest and lowest percentages of gum harvested were 17.76 and 9.77, respectively, by concave and surface methods in Mazar habitat. The gum yield was related to harvest interval, the minimum and maximum were 6.35 and 20.93 g per plant for 5 and 13 harvests, respectively. In Kashmar, the highest (14.94 g) and the lowest (7.56 g) gum were measured by cutting as conventional and concave methods, respectively. Also, the gum yield averaged 3 g for 5 harvests and 16.5 g for 15 harvests. The results suggest that conventional harvest must be forbidden because of the death of the target plants whereas other methods tested resulted in suitable yield and production.
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