The efficiency of Using Different Fertilizers on Growth of Hawthorn) monogyna Cratagus (, Hackberry ) Celtis caucasica ( and Persian Turpentine) Pistacia atlantica ( Seedlings in the Nursery

To determine the most appropriate type of fertilizer, this study was carried out to investigate the improvement of quantitative characteristics of seedlings of three species of Hawthorn, Hackberry, and Persian Turpentine under different fertilization treatments in the nursery of the General Department of Natural Resources of Zanjan Province. A completely randomized block was designed with biofertilizers, biofertilizers and chemical fertilizers released, vermicompost, compost, animal manure, and chemical fertilizers. At the end of the growing season (early October), to measure the characteristics, at first three pots were randomly selected from each treatment and then the characteristics of collar diameter, main stem height, root, and root volume were measured. Based on the results in hawthorn species, the highest collar diameter was observed in vermicompost-gradual treatment (2.23 cm) and the highest stem length was observed in bio-gradual treatment (0.9 cm). In terms of root volume, vermicompost fertilizer treatment with 33.33 cm3 showed the highest growth. In Hackberry species, the largest collar diameter in bio-gradual treatment (2.21 cm), the maximum stem length in livestock-gradual treatment (31.67 cm), the maximum root length in vermicompost-gradual treatment (36.68 cm), and the highest root volume was observed in bio-chemical-gradual treatment (25.0 cm3). In Persian Turpentine species the highest collar diameter in vermicompost treatment (4.06 cm), the maximum stem length in chemical-gradual treatment (10.34 cm), the highest root length of coriander seedlings in chemical treatments (33.68 cm), and the highest amount Root volume was observed in vermicompost treatment with 7.34 cm3.