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Response to Ammonia Emission Flux to Different pH Conditions under Biochar and Liquid Fertilizer Application

Author

Listed:
  • Min-Suk Kim

    (OJeong Resilience Institute, Korea University, Seoul 02841, Korea)

  • Hyun-Gi Min

    (Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Korea)

  • Namin Koo

    (Department of Forest Conservation, National Institute of Forest Science, Seoul 02455, Korea)

  • Jeong-Gyu Kim

    (Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Korea)

Abstract

For the ammonia generated in Korea, the contribution rate of livestock manure is high, and a large amount of ammonia (NH 3 ) is emitted into the atmosphere during the soil application process. Volatilization of NH 3 is affected by soil characteristics as well as manure characteristics, but the current inventory does not sufficiently reflect this. This study was conducted to confirm the change of the NH 3 emitted from liquid fertilizer (LF) due to soil pH and to evaluate the impacts of biochar (BC) on the suppression of NH 3 volatilization. Estimating the NH 3 emission flux using the chamber for 24 soils after LF treatment, it showed a tendency to increase exponentially as the pH in soil increased from 4 to 7. In addition, the parallel treatment of BC and LF increased the soil pH, thereby increasing the NH 3 emission flux. The rise of soil pH due to LF treatment is a temporary phenomenon that appears in the early stage, but since NH 3 volatilization is also highest at the beginning of LF application, the effect of soil characteristics on emission factor and its inventory should be considered when calculating the amount of NH 3 emissions. Therefore, follow-up studies such as subdividing and enhancing the NH 3 emission factor by soil characteristics and developing a reduction coefficient to certify the amount of emission reduction are needed.

Suggested Citation

  • Min-Suk Kim & Hyun-Gi Min & Namin Koo & Jeong-Gyu Kim, 2021. "Response to Ammonia Emission Flux to Different pH Conditions under Biochar and Liquid Fertilizer Application," Agriculture, MDPI, vol. 11(2), pages 1-8, February.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:2:p:136-:d:495067
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    References listed on IDEAS

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    1. Min-Suk Kim & Jeong-Gyu Kim, 2020. "Effects of Thickness of Solid Media, Ventilation Rate, and Chamber Volume on Ammonia Emission from Liquid Fertilizers Using Dynamic Chamber-Capture System (DCS)," Agriculture, MDPI, vol. 10(6), pages 1-12, June.
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