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Azolla: Potential Biofertilizer For Increasing Rice Productivity, And Government Policy For Implementation

Author

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  • Parbati Thapa

    (Institute of Agriculture and Animal Science, Lamjung Campus, Sundarbazar 07, Sundarbazar Municipality, 33600, Nepal.)

  • Kabita Poudel

    (Institute of Agriculture and Animal Science, Lamjung Campus, Sundarbazar 07, Sundarbazar Municipality, 33600, Nepal)

Abstract

Rice is the staple food for the significant population of Asia. Due to projected population growth in this region, the demand for this food is also predicted to be increased exponentially soon. Nitrogen (N) plays a dominant role in increasing rice yield as it is the most critical yield-limiting nutrient of rice. Chemical N fertilizers which are a major source in supplying N nutrients to rice, have adverse effects on overall soil and environmental health in the long term. The application of free-floating aquatic fern Azolla as a biofertilizer can be an alternative to improve rice yield without degrading the environment. It provides a natural source of many nutrients, especially N, improves the availability of other nutrients, plays a critical role in weed suppression, enhances soil organic matter, and improves efficiency of the inorganic fertilizers while maintaining the suitable soil pH condition for rice growth, which overall contribute to rice yield increment. Therefore, Azolla application has tremendous potential to improve soil health and boost yield sustainability.

Suggested Citation

  • Parbati Thapa & Kabita Poudel, 2021. "Azolla: Potential Biofertilizer For Increasing Rice Productivity, And Government Policy For Implementation," Journal of Wastes and Biomass Management (JWBM), Zibeline International Publishing, vol. 3(2), pages 62-68, August.
    • Handle: RePEc:zib:zbjwbm:v:3:y:2021:i:2:p:62-68
    DOI: 10.26480/jwbm.02.2021.62.68
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    References listed on IDEAS

    as
    1. Ana Luisa Pereira, 2018. "The Unique Symbiotic System between a Fern and a Cyanobacterium, Azolla-Anabaena azollae: Their Potential as Biofertilizer, Feed, and Remediation," Chapters, in: Everlon Cid Rigobelo (ed.), Symbiosis, IntechOpen.
    2. Prasanna, P.H.S.N. & Gunaratne, L.H.P & Withana, W.D.R.S., 2004. "Economic Analysis of Paddy Threshing Methods," Sri Lankan Journal of Agricultural Economics, Sri Lanka Agricultural Economics Association (SAEA), vol. 6, pages 1-17.
    3. Ya-Nan Zhao & Xin-Hua He & Xing-Cheng Huang & Yue-Qiang Zhang & Xiao-Jun Shi, 2016. "Increasing Soil Organic Matter Enhances Inherent Soil Productivity while Offsetting Fertilization Effect under a Rice Cropping System," Sustainability, MDPI, vol. 8(9), pages 1-12, September.
    4. Razavipour, Teimour & Moghaddam, Sina Siavash & Doaei, Sahar & Noorhosseini, Seyyed Ali & Damalas, Christos A., 2018. "Azolla (Azolla filiculoides) compost improves grain yield of rice (Oryza sativa L.) under different irrigation regimes," Agricultural Water Management, Elsevier, vol. 209(C), pages 1-10.
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