https://paglab.org/tag/emission-factors/Emission FactorsHugo Blox Builder (https://hugoblox.com)en-usWed, 01 Apr 2020 00:00:00 +0000https://paglab.org/media/logo_hu_32055a858e223df5.pnghttps://paglab.org/tag/emission-factors/https://paglab.org/project/nh3-min/Wed, 01 Apr 2020 00:00:00 +0000https://paglab.org/project/nh3-min/<h2 id="overview">Overview</h2> <p><strong>NH3-Min</strong> is a national consortium project funded through the <strong>Landwirtschaftlichen Rentenbank</strong>, coordinated by the <strong>Thünen Institute for Climate-Smart Agriculture</strong>. The project quantifies and evaluates <strong>ammonia (NH₃) losses from synthetic nitrogen fertilizers</strong> and develops evidence-based mitigation measures, while simultaneously assessing <strong>nitrogen use efficiency (NUE)</strong> in arable crop production.</p> <p>Around 15% of agricultural NH₃ emissions in Germany originate from synthetic N fertilizers. The four fertilizer types investigated—<strong>urea, calcium ammonium nitrate (CAN), ammonium nitrate urea solution (UAN), and ammonium sulfate urea</strong>—together account for more than 85% of NH₃ emissions from synthetic N fertilizers applied in Germany. <strong>Winter wheat</strong> serves as the model crop across all experimental sites.</p> <h2 id="objectives">Objectives</h2> <ul> <li><strong>Quantify NH₃ emissions</strong> from different synthetic N fertilizer types and application systems across diverse German agro-climatic conditions.</li> <li><strong>Evaluate mitigation options</strong> including incorporation/injection techniques and urease inhibitors.</li> <li><strong>Derive site-differentiated NH₃ emission factors</strong> for synthetic N fertilizers under German production conditions.</li> <li><strong>Assess NUE</strong> of different synthetic N fertilizers and application strategies in field crop experiments.</li> <li><strong>Transfer knowledge</strong> to farmers, advisors, and policymakers.</li> </ul> <h2 id="research-questions">Research Questions</h2> <ul> <li>How large are NH₃ emissions following application of different synthetic N fertilizers?</li> <li>What are the site-differentiated NH₃ emission factors across Germany?</li> <li>How effectively can application techniques (e.g., incorporation, injection) or inhibitors (urease inhibitors) reduce NH₃ emissions?</li> <li>How do fertilizer-dependent NH₃ emissions affect yields, N uptake, and NUE in winter wheat?</li> </ul> <h2 id="project-partners">Project Partners</h2> <ul> <li>Thünen Institute for Climate-Smart Agriculture</li> <li>Technical University of Munich (TUM)</li> <li>Julius Kühn-Institut – Federal Research Centre for Cultivated Plants (JKI)</li> <li>KTBL – Association for Technology and Structures in Agriculture</li> <li>Christian-Albrechts-Universität Kiel</li> <li>Forschungszentrum Jülich</li> <li>Technische Universität Berlin</li> <li>Universität Hohenheim</li> <li>Bayerische Landesanstalt für Landwirtschaft (LfL)</li> <li>Ingenieurgemeinschaft für Landwirtschaft und Umwelt (IGLU)</li> <li>Landwirtschaftskammer Niedersachsen</li> <li>Stickstoffwerke Priesteritz (SKWP)</li> </ul> <p><strong>Duration:</strong> 01.2021 – 12.2024</p>