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Related Experiment Video

Updated: Jun 11, 2025

Procedures of Laboratory Fumigation for Pest Control with Nitric Oxide Gas

Procedures of Laboratory Fumigation for Pest Control with Nitric Oxide Gas

Published on: November 24, 2017

Forage conservation is a neglected nitrous oxide source.

Seongmin Yang¹, Maheen Mahmood¹, Rudra Baral²

¹Department of Civil Engineering, Kansas State University, Manhattan, KS 66506, USA.

|October 1, 2024

Summary

This summary is machine-generated.

Forage conservation, like silage production, is a significant source of nitrous oxide (N2O), a potent greenhouse gas. Adding chlorate effectively reduced N2O emissions, offering a mitigation strategy for this agricultural source.

Keywords:

denitrification forage conservation greenhouse gas nitrous oxide sustainable agriculture

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Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

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Last Updated: Jun 11, 2025

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Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

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Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Published on: May 10, 2020

Area of Science:

Agricultural Science
Environmental Science
Atmospheric Chemistry

Background:

Agricultural activities are a primary source of nitrous oxide (N2O), a significant greenhouse gas and ozone-depleting substance.
The contribution of forage conservation, specifically silage production, to N2O emissions has been largely understudied.

Purpose of the Study:

To investigate nitrous oxide (N2O) production during simulated silage fermentation of major US forage crops.
To identify effective mitigation strategies for N2O emissions from silage production.

Main Methods:

Simulated silage production using maize, alfalfa, and sorghum.
Measurement of N2O production under various conditions, including the application of chlorate, acetylene, and intermittent oxygen exposure.
Molecular analyses to identify microbial pathways responsible for N2O production.

Main Results:

Substantial N2O emissions were observed from simulated silage, potentially positioning forage conservation as the third largest agricultural N2O source.
Chlorate addition significantly reduced N2O production.
Acetylene and intermittent oxygen exposure had no significant impact on N2O emissions.
Molecular analyses confirmed denitrifiers, not nitrifiers, as the primary drivers of N2O production.

Conclusions:

Forage conservation, particularly silage production, represents a significant and previously underestimated source of agricultural nitrous oxide (N2O).
The use of chlorate as an additive shows promise as an effective mitigation strategy to reduce N2O emissions from silage.
Understanding the microbial mechanisms, specifically the role of denitrifiers, is crucial for developing targeted strategies to mitigate N2O emissions from agricultural practices.