Effects of Mycorrhizal Fungi, Growth Promoting Bacteria and Animal Manure on the Performance and Growth Characteristics of Rosa demascena in Layzangan Region of Fars Province

Utilization of damask rose in sanitary and medicinal industries change it to valuable and economic goods. In order to investigate the effects of mycorrhizal fungi, plant growth-promoting bacteria and animal manure on yield and growth characteristics of damask rose, a factorial experiment in a randomized complete block design with four replications was performed in 2014 in Layzgan region of Darab city. The first factor was two levels of animal manure (0 and Two kg of per plant. The second factors was two levels of mycorrhizal fungi (without and with a mixture of three species of mycorrhizal fungi) and the third factor was four levels of plant growth-promoting bacteria (three strains of plant growth-promoting bacteria and no bacteria). The results showed that the effects of animal manure, inoculation with mycorrhizal fungi and inoculation with promoting bacteria had a significant (P < 0.01)) effect on growth characteristics and root colonization of damask rose. Pseudomonas fluorescens had a significant effect on all measured characteristics. Interaction effects of each three factors had the greatest influence on wet and dry weight of flower, height and width of plant, number of flowers pre plant and root colonization which respectively caused the increments of 91, 78.3, 57.3, 34.1, 77.2 and 32.7 percent to control.It was concluded that the simultaneous use of all factors had more positive effects on the improvement of measured characteristics.