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In order to study the chestnut seedling production , this project was carried out in Caspian forest seed center, north of Iran. 60 kg seeds were gathered from 30 trees in Vissrood forest in Gilan province. After sterlizing the soils with Methyl bromide antifungi in two conditions (shaded and unshaded) with 5 treatments and 4 replications (randomized complete block designs) after cress test seeds were sowed on early October, 2001
Each replication has consisted of 225 pots (5 *45 pots) . Treatments 1-4 were included : decayed tea leaves , loam soil , rice bran and sand with different compositions , and treatment 5 (control) was natural forest soil from investigated chestnut site.
Analysis of variance with Duncan’s test (Duncan’s new multiple range test) on different characters consist of seedling vitality , height and collar diameter showed significant difference at 1% level between control treatment and others . Meanwhile, no differences were obtained in other treatments In other words, shaded condition with forest soil treatment showed best results.