بررسي اثر زمان كاشت و نوع پوشش بذر در توليد نهال بارانك

Investigation of the effects of planting date and soil mulching on germination of service tree seeds

increasing seedling emergence capacity of service tree was the main goal of this research, which was carried out in Urimelk nursery, located at 1550 meter altitude, northern aspect in Farim Forest Coʹs nursery in north of IRAN. In order to suggest the most suitable method of seed sowing for Sorbus torminalis, three treatments of planting date including: planting by 20th Oct and 20th Dec and 20th Feb and three treatments of soil mulching (with mosses, with gunny cloth and without covering the soil) were studied by using factorial experimental design in 4 replications. Analysis of variance showed a significant difference between three planting dates at 1% level of probability. The average of emerged seedlings in the 20`h Oct was more than the two other dates. Also there was a significant difference between the three levels of soil mulching factor only in planting of 20`h Oct. The average of emerged seedlings in the covered plots by gunny was greater than the plots that were covered by mosses. And the plots that were protected by mulch were better than unmulching plots.