INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY

Volume 18, No. 01, Month JANUARY, Year 2022, Pages 401 - 420

Potential of pgpr isolated from rhizosphere of pulpwood trees in stimulating the growth of eucalyptus pellita f. muell

Zul, D., Elviana, M., Ismi, K. R. N., Tassyah, K. R., Siregar, B. A., Gafur, A. and Tjahjono, B.

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Eucalyptus pellita is an alternative plant for Acacia crassicarpa and Acacia mangium as raw materials for pulp and paper. E. pellita is a plant that easily adapts to various environmental conditions, but its growth rate is lower than that of A. crassicarpa and A. mangium. The growth rate of E. pellita can be stimulated by applying plant growth-promoting rhizobacteria (PGPR). A study was conducted to characterize and analyze the ability of 25 PGPR isolates that isolated from rhizosphere of E. pellita seedlings in stimulating the growth of E. pellita. Characteristics of PGPR were analyzed consisted of the isolates’ ability to produce IAA, siderophores, phosphate solubilization, ability as a biocontrol, hypersensitivity test using tobacco plants, and compatibility test between isolates. Stimulating the growth of E. pellita seedlings was carried out with the following treatments: inoculation of a consortium of five selected isolates with or without the addition of fungicides. As a comparison, E. pellita seedlings were also treated without inoculation of a PGPR consortium, and some seedlings were added with fungicides, as well as fungicides and fertilizer.ETC...

Keywords

Eucalyptus pellita, IAA, PGPR, Phosphate Solubilization, Siderophores

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