Investigation on best season and method of transplantation of Cupressus sempervirens var. horizontalis seedlings at Gorgan area

A trial was conducted under split plots design in 1997 to investigate the best season and method of Cypress (Cupressus sempervirens var. horizontalis) transplantation using 1600 seedlings. The treatments were: Two planting seasons (Autumn [december] and spring [march]) and two methods of transplantation (bare and un bare roots). Economical and growth aspects of the seedling production and transplantaion expenses, percentage of survival, height and  diameter (collar) growth .  The results showed that:  1-There were significant effects of the treatments and their interactions on the measured growth parameters and survival. 2-The greatest records of  survival (87.36% ) height and diameter were at spring and unbare root transplanting method.  3-Although expenses of seedling production with bare root was less than the unbare root method but because of its low survival and its extra expenses for seedling season with unbare root system was the most economical method for Gorgan area.