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Gaseous Emissions after Soil Application of Pellet Made from Composted Pig Slurry Solid Fraction: Effect of Application Method and Pellet Diameter

Author

Listed:
  • Niccolò Pampuro

    (Institute for Agricultural and Earth Moving Machines (IMAMOTER), Italian National Research Council (CNR)—Strada delle Cacce, 73-10135 Torino, Italy)

  • Patrizia Busato

    (Department of Agricultural, Forestry and Food Sciences, University of Turin—Largo Paolo Braccini, 2–10095 Grugliasco, Italy)

  • Eugenio Cavallo

    (Institute for Agricultural and Earth Moving Machines (IMAMOTER), Italian National Research Council (CNR)—Strada delle Cacce, 73-10135 Torino, Italy)

Abstract

The study aimed at determining ammonia and GHG emissions from soil fertilized with pellets made from composted pig slurry solid fraction and to evaluate the effects of pellet diameter and pellet application method on gaseous emissions. A laboratory scale experiment was carried out investigating two composts: pig slurry solid fraction compost (SSFC) and pig slurry solid fraction mixed with wood chips compost (WCC). The two composts were pelettized in two different diameters—6 and 8 mm—by means of mechanical pelletizer. In total, eight fertilized treatments plus one unfertilized control were included in the experiment. The investigated pellets were applied at the same nitrogen rate (equivalent to 200 kg ha −1 ) using two different methods (on soil surface and incorporated into the soil). Ammonia (NH 3 ) emission was monitored immediately after pellet application, while nitrous oxide (N 2 O), carbon dioxide (CO 2 ) and methane (CH 4 ) were measured on a 57-day incubation period. As expected, ammonia volatilization was not detected from any of the treatments investigated. At the end of the experiment, the cumulative amounts of N 2 O, CO 2 and CH 4 ranged from 2.70 mg N-N 2 O m −2 to 24.30 mg N-N 2 O m −2 , from 601.89 mg C-CO 2 m −2 to 1170.34 mg C-CO 2 m −2 and from 1.22 mg C-CH 4 m −2 to 1.31 mg C-CH 4 m −2 , respectively. The overall results of the investigation highlighted that application on the soil surface reduced nitrous oxide emission, while the carbon dioxide emission increased significantly with smaller pellet diameter.

Suggested Citation

  • Niccolò Pampuro & Patrizia Busato & Eugenio Cavallo, 2018. "Gaseous Emissions after Soil Application of Pellet Made from Composted Pig Slurry Solid Fraction: Effect of Application Method and Pellet Diameter," Agriculture, MDPI, vol. 8(8), pages 1-11, August.
    • Handle: RePEc:gam:jagris:v:8:y:2018:i:8:p:119-:d:161191
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    References listed on IDEAS

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    1. Niccolò Pampuro & Federica Caffaro & Eugenio Cavallo, 2018. "Reuse of Animal Manure: A Case Study on Stakeholders’ Perceptions about Pelletized Compost in Northwestern Italy," Sustainability, MDPI, vol. 10(6), pages 1-10, June.
    2. Ronald Coase & Ning Wang, 2012. "China in Transition," Palgrave Macmillan Books, in: How China Became Capitalist, chapter 2, pages 22-40, Palgrave Macmillan.
    3. Niccolò Pampuro & Christian Preti & Eugenio Cavallo, 2018. "Recycling Pig Slurry Solid Fraction Compost as a Sound Absorber," Sustainability, MDPI, vol. 10(1), pages 1-13, January.
    4. Niccolò Pampuro & Carlo Bisaglia & Elio Romano & Massimo Brambilla & Ester Foppa Pedretti & Eugenio Cavallo, 2017. "Phytotoxicity and Chemical Characterization of Compost Derived from Pig Slurry Solid Fraction for Organic Pellet Production," Agriculture, MDPI, vol. 7(11), pages 1-10, November.
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    1. Mariangela Diacono & Alessandro Persiani & Elena Testani & Francesco Montemurro & Corrado Ciaccia, 2019. "Recycling Agricultural Wastes and By-products in Organic Farming: Biofertilizer Production, Yield Performance and Carbon Footprint Analysis," Sustainability, MDPI, vol. 11(14), pages 1-17, July.

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