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Collaborative project: Improved assessment of the greenhouse gas emission reduction by catch crops in arable crop production and development of an advisory tool for more precise nitrogen fertilization after catch crop cultivation – subproject 5 (THG-ZWIFRU)
Project
Project code: 281B201116
Contract period: 10.08.2018
- 09.10.2021
Budget: 243,133 Euro
Purpose of research: Applied research
Keywords: crop production, catch crop, fertilization, emissions, sustainable crop production, reduction of greenhouse gas emissions
Results from the joint project “THG-ZwiFru” show major differences in the site-specific climate impact of various catch crops (CC; oilseed radish, saia oats, spring vetch, winter rye) compared to bare fallow. On sandy soils with maize cropping sequences prone to leaching losses (Kiel, Uelzen), direct N2O emissions from CC could be compensated by reduced indirect emissions from NO3 leaching, lower N fertilizer need and long-term carbon sequestration (best effect: oilseed radish, saia oat). In sugar beet cropping sequences on loess soils (Göttingen, Stuttgart), higher direct N2O emissions from CC cultivation could not be compensated by positive CC services (fertilizer need, carbon sequestration) (best effect summer vetch). In particular, mouldboard ploughing of winter-hardy rye CC was unfavourable. Overall, the positive effects predominated on sandy sites – the cultivation decision there should focus on reduced nitrate leaching. On loamy sites, the avoidance of direct N2O emissions should be the focus of the cultivation decision.
Section overview
Subjects
- Crop Production
- Resource management
- Climate Change
Framework programme
Funding programme
Excutive institution
Funding institution
Project management agencies
Associated projects: THG-ZWIFRU
- Collaborative project: Improved assessment of the greenhouse gas emission reduction by catch crops in arable crop production and development of an advisory tool for more precise nitrogen fertilization after catch crop cultivation – subproject 1
- Collaborative project: Improved assessment of the greenhouse gas emission reduction by catch crops in arable crop production and development of an advisory tool for more precise nitrogen fertilization after catch crop cultivation – subproject 2
- Collaborative project: Improved assessment of the greenhouse gas emission reduction by catch crops in arable crop production and development of an advisory tool for more precise nitrogen fertilization after catch crop cultivation – subproject 3
- Collaborative project: Improved assessment of the greenhouse gas emission reduction by catch crops in arable crop production and development of an advisory tool for more precise nitrogen fertilization after catch crop cultivation – subproject 4
- Collaborative project: Improved assessment of the greenhouse gas emission reduction by catch crops in arable crop production and development of an advisory tool for more precise nitrogen fertilization after catch crop cultivation – subproject 6
- Collaborative project: Improved assessment of the greenhouse gas emission reduction by catch crops in arable crop production and development of an advisory tool for more precise nitrogen fertilization after catch crop cultivation – subproject 7
