Effects of Plant Growth Promoting Bacteria on Canopy Cover of Rangelands in Eastern Region of Turkey

This study was conducted on high-elevation rangelands of Erzurum, Turkey, between ۲۰۱۱ and ۲۰۱۴ for four year. The aim was to determine the effects of Plant Growth Promoting Bacteria (PGPBs) applications on rangeland canopy cover ratio. PGPBs strains (Pseudomonas fluorescens T۲۶, Pantoea agglomerans ۱۶B, Paenibacillus polymyxa TV-۱۲E, Bacillus cereus TV-۳۰D, and Bacillus megatherium TV-۳D) used in this study were obtained from the culture collection unit in the Department of Plant Protection, Faculty of Agriculture at Atatürk University, Erzurum, Turkey. Four study year results showed that PGPBs treatments had significant effects on the canopy cover of rangelands. The highest canopy cover ratio occupied was in treatment T۲۱ (۵۰ kg N ha-۱+۲۵ kg P۲O۵ ha-۱+B. megatherium. TV-۳D). There was a significant difference between treatments T۲۱ and the other treatments, while the lowest was in treatment T۱۴ (۵۰ kg N ha-۱+B. cereus TV-۳۰D). In plots of P. polymyxa TV-۱۲E, P. fluorescens T۲۶, and B. megatherium TV-۳D bacteria strains plus half of N+P fertilizer, the canopy cover was higher than that of the other treatments.

کلیدواژه ها:

Bacteria treatment ، Environmentally friendly ، Natural rangelands ، Plant cover ، Rangeland fertilization.