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Livestock is responsible for about 14.5% of anthropogenic greenhouse gases (GHGs), notably methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O), with N2O being the most potent. Approximately 40% of livestock GHG emissions come from manure management, which also significantly emits ammonia (NH3). Manure distribution technique, slurry characteristics, and environmental conditions impact field fertilization emissions. Direct injection can reduce NH3 emissions by up to 90% but may increase N2O emissions. The LIFE CLINMED-FARM project in Italy tested a nitrapyrin-based nitrification inhibitor (NI) on a cattle farm. Plots fertilized with cattle slurry and digestate, with and without NI, were monitored. The NI significantly reduced cumulative N2O emissions by 43.5% and increased maize and ryegrass yields by 11% and 6%, respectively, although these yield increases were not statistically significant. NH3 emissions were consistently low, representing 0.07% of distributed nitrogen for maize and 0.4% for ryegrass.

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Effect of a Nitrapyrin-Based Nitrification Inhibitor on Yield and Gaseous Emissions from a Maize-Ryegrass Rotation, Fertilized with Two Slurry Types

  • 会议论文

  • 发表日期：

    2025年

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  • Flavia Dela Pierre,
  • Martina Friuli,
  • Luca Rollé,
  • Elio Dinuccio

摘要

Livestock is responsible for about 14.5% of anthropogenic greenhouse gases (GHGs), notably methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O), with N2O being the most potent. Approximately 40% of livestock GHG emissions come from manure management, which also significantly emits ammonia (NH3). Manure distribution technique, slurry characteristics, and environmental conditions impact field fertilization emissions. Direct injection can reduce NH3 emissions by up to 90% but may increase N2O emissions. The LIFE CLINMED-FARM project in Italy tested a nitrapyrin-based nitrification inhibitor (NI) on a cattle farm. Plots fertilized with cattle slurry and digestate, with and without NI, were monitored. The NI significantly reduced cumulative N2O emissions by 43.5% and increased maize and ryegrass yields by 11% and 6%, respectively, although these yield increases were not statistically significant. NH3 emissions were consistently low, representing 0.07% of distributed nitrogen for maize and 0.4% for ryegrass.