Development of Arbuscular Mycorrhizal Fungi-Organic Fertilizer Pellets Encapsulated with Alginate Film

  • Pornpicha Pitaktamrong Chulalongkorn University
  • Jeerun Kingkaew Mahidol University
  • Suravoot Yooyongwech Mahidol University
  • Suriyan Cha-um National Science and Technology Development Agency
  • Muenduen Phisalaphong Chulalongkorn University

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Abstract

A novel formulation consisting of arbuscular mycorrhizal fungi (AMF) spores mixed with sterilized organic fertilizer (AMF-F) encapsulated by an insoluble calcium alginate film was developed to enhance AMF efficacy and stability. The hardness of the pellets increased from 7–8 N to approximately 80 N by increasing the alginate concentration of the coating film from 1 to 3%. The AMF spore germination rate for the AMF and AMF-F pellets coated with calcium alginate films depended on the alginate concentration. A 2% sodium alginate formulation for the coating films resulted in optimal AMF spore germination rates and mechanical properties for handling, transport, and stability. The inclusion of a sterilized organic fertilizer in the encapsulated AMF-F pellets considerably induced AMF mycelial growth and helped prolong the shelf life of the pellets. In soil, the AMF-F pellets encapsulated with alginate initially degraded faster than the alginate-encapsulated AMF pellets. However, both types of pellets were fully degraded within 30 days. It was demonstrated that AMF and AMF-F could promote colonization and provided resistance to drought stress in maize potted plants.

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Author Biographies
Pornpicha Pitaktamrong

Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand

Jeerun Kingkaew

Food Technology Program, Mahidol University, Kanchanaburi, Thailand

Suravoot Yooyongwech

Department of Agricultural Science, Mahidol University, Nakon Pathom, Thailand

Suriyan Cha-um

National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand

Muenduen Phisalaphong

Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand

Published
Vol 22 No 6, Dec 4, 2018
How to Cite
P. Pitaktamrong, J. Kingkaew, S. Yooyongwech, S. Cha-um, and M. Phisalaphong, “Development of Arbuscular Mycorrhizal Fungi-Organic Fertilizer Pellets Encapsulated with Alginate Film”, Eng. J., vol. 22, no. 6, pp. 65-79, Dec. 2018.

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