Evaluation of Two provenances of Grand fir (Abies grandis (Douglas ex D. Don) Lindl) establishment in Caspian forests (Case Study: Asalem (Picesun) and Ramsar (safarood))

Grand fir is one of the important conifers.Two provenances of abies seed were imported from Germany in 2006. The first phases of the project activities were started. With planting in ground bed. After two years seedlings in Pisesoon nursery were replanting in plastic pots. Care of seedling (weeding and watering) was conducted annually. Collar diameter and height measurements and percent of survival were estimated for two times. Germination of Seeds and mortality in the first year was 17 and 7.8 percent for the low land origin and 72 and 6.3 percent for middle land origin, respectively. Total of the survival rate was 96% and a minimum and maximum of diameter were 1.5,8.5 mm, and height was 11 cm and maximum height 43 cm Statistical analysis showed that the collar diameter and height growth of seedlings in the nursery at different times in the production phase was significant(p=0.01). For this purpose a research in a completely randomized design with three spacing treatments (2×2, 2×3 and 3×3 meter) and three replications were done in Gilan and Mazandaran provinces. At first, seeds were planted in nursery and finally seedlings were replanted in plastic pots. Weed control and irrigation were performed. Collar diameter, height and percentage of survival seedlings were measured two times. The average of collar diameter and height is not significant difference. Because it is not starting competition between seedlings planted in treatment.