Investigating Growth of Araucaria excelsa L. in Different Methods of Fertilization

A serious problem in cultivation of ornamental plants is a lack scientific and applied program in fertilization, so that the plant nutrition focused on growth medium. A randomized completely design with 8 different fertilization methods with the use of ammonium sulphate, potassium sulphate, di ammonium phosphate, ferrilene and kristalon was conducted in three replications in a greenhouse of Chaboksar, Guilan, Iran. The height of bush, number of lateral branches, floor distance, number of floor, fresh weight of root and shoot, total fresh and dry weight of root and shoot were measured. The results showed that the growth of plant increased in a treatment including foliar spray of ferrilene and kristalon fertilizers in 1:1000 ratio for three times. In treatment of ammonium sulphate, potassium sulphate and di ammonium phosphate as base fertilizers amounted 2, 1 and 0.5 g per pot, respectively, the growth traits of plant was same to ferrilene and kristalon treatment. In conclusion, the highest plant growth obtained of a treatment including foliar spray of ferrilen and kristalon in 1:1000 ratio for three times.