The effects of the sowing time and some pretreatments on the germination of Crataegus orientalis (Pallas Ex. Bieb) (K. Koch.) seeds

In this study, it was aimed to determine the effects of different sowing times and pretreatments on the germination of Crataegus orientalis (Pallas. Ex.Bieb) seeds. For this purpose, summer sowing (in July and August), autumn planting (in September, October and November) and spring sowing. (in April) were carried out. Prior to summer and autumn sowing, the seeds were pretreated with sulfuric acid for 3, 6, 9, 12 and 15 hours and with ash water for 2, 4, 6, 8 and 10 days. Random parcels with four replication were used as a sowing pattern. Summer and autumn sowings were carried out at Şavşat Forest Management Directorate Susuz Forest Nursery. As a result of the study, it was determined that the effect of sowing time was important, while the effect of pre-treatments on the germination percentage of C. orientalis seeds was found to be insignificant. Germination was obtained in July, August and September and October, and germination was not achieved in November. There is no significant difference in germination percentage between the sulfuric acid and ash solution treatment groups. Based on the results obtained in the study, it can be said that the germination degrees of C. orientalis seeds is high and it is necessary to increase the processing time and numbers in order to eliminate it. Keywords:Crataegus orientalis, sowing time, pretreatment, ash solution, seed dormancy