Microbial exploration of the origin of the Pandeglang cocoa plant (Theobroma cacao L.) rhizosphere as potential biofertilizer


  • N Nurmayulis Sultan Ageng Tirtayasa University
  • Fitria Riany Eris
  • Dewi Hastusi
  • Abdul Hasyim Sodiq
  • Yus Rama Denny
  • Dwi Ningsih Susilowati Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development, Jl. Tentara Pelajar No. 3A, Bogor 16111, Indonesia




Azospirillium, phosphate-solubilizing bacteria, phytohormone, rhizosphere, total Azotobacter


This study aimed to determine the ability of microorganisms originating from the root ecosystem (Rhizosphere) of cocoa (Theobroma cacao L) as a potential superior to biological agents. For the experiment, soil samples were observed from the rhizosphere of cocoa plants in Pandeglang Regency. At this stage, the research was focused on finding out the extent of microbe screening results from cocoa rhizosphere soil in producing phytohormones. The results from the initial selection showed a population of Azotobacter 2.8 x 105 cfu/mL, a population of Azospirillium of 0.3 x 102 cfu/mL, and a population of Phosphate-solubilizing bacteria (PSB) 4.1 x 107 cfu/mL. In the hemolysis test conducted for 9 isolates, only 1 isolate showed a negative result. From the test of the ability to produce phytohormones showed respectively from the highest values were IAA 5.467 mg/L, gibberellin 3.768 mg/L, zeatin 1.321 mg/L, and kinetin 0.886 mg/L. The land rhizosphere of Pandeglang cocoa plant had superior potential microbes which could be used as biological fertilizers.

Author Biography

N Nurmayulis, Sultan Ageng Tirtayasa University



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How to Cite

Nurmayulis, N., Eris, F. R., Hastusi, D., Sodiq, A. H., Denny, Y. R., & Susilowati, D. N. (2020). Microbial exploration of the origin of the Pandeglang cocoa plant (Theobroma cacao L.) rhizosphere as potential biofertilizer. Journal of Degraded and Mining Lands Management, 8(2), 2611–2616. https://doi.org/10.15243/jdmlm.2021.082.2611



Research Article