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Collaborative project: Nitrogen Stabilization and Subsurface Placement as Innovative Technologies Enhancing the Resource Efficiency of Fertilized Urea - subproject 6 (StaPlaRes)
Project
Project code: 2818102715
Contract period: 25.07.2016
- 30.06.2020
Budget: 231,587 Euro
Purpose of research: Experimental development
"R&D project StaPlaRes."
"N-Stabilization and Placement close to the roots as innovative technologies to optimize Resource efficiency in urea fertilization."At three very different arable sites, the urea fertilization variants (1) standard, (2) stabilization and (3) placement were tested with respect to their effects on NH3 and N2O losses, yield parameters and N efficiency in the crop rotation winter oilseed rape winter wheat winter barley. The results can be summarized as follows: Loss reduction: gaseous N losses from standard urea (spread, not stabilized) were very low and well below official emission factors. Nevertheless, both stabilization with urease and nitrification inhibitor and near-root placement caused significant NH3 loss reduction. Here, placement mostly resulted in increased N2O losses, while stabilization provided complex mitigation of all gaseous N losses. Fertilizer N efficiency / eco-efficiency: Urea placement led to an increase in efficiency only in one site. With N stabilization, an increase was generally achieved in oilseed rape and wheat. In barley, corresponding advantage effects were absent due to suboptimal fertilization dates. In a comparative eco-efficiency analysis, stabilization proved to be most preferable. Transfer to practice: Both placement and stabilization require special application strategies. Adapted systems already exist for stabilized systems. These will be successively developed, e.g. in the follow-up project StaPrax-Regio (started early 2021). The double-stabilized fertilizer specialty ALZON® neo-N was launched in 2018. Placement close to the roots has corresponding utilization potential especially in specialty crops and in organic farming. Scientific exploitation: The results have been widely published. From July 2021, all datasets will be available in the public database StaPlaRes-DB-Thuenen (www.openagrar.de)."
Section overview
Subjects
- Plant Nutrition
- Resource management
Framework programme
Funding programme
Excutive institution
Funding institution
Project management agencies
Associated projects: StaPlaRes
- Collaborative project: Nitrogen Stabilization and Subsurface Placement as Innovative Technologies Enhancing the Resource Efficiency of Fertilized Urea - subproject 1
- Collaborative project: Nitrogen Stabilization and Subsurface Placement as Innovative Technologies Enhancing the Resource Efficiency of Fertilized Urea - subproject 2
- Collaborative project: Nitrogen Stabilization and Subsurface Placement as Innovative Technologies Enhancing the Resource Efficiency of Fertilized Urea - subproject 3
- Collaborative project: Nitrogen Stabilization and Subsurface Placement as Innovative Technologies Enhancing the Resource Efficiency of Fertilized Urea - subproject 4
- Collaborative project: Nitrogen Stabilization and Subsurface Placement as Innovative Technologies Enhancing the Resource Efficiency of Fertilized Urea - subproject 5
- Collaborative project: Nitrogen Stabilization and Subsurface Placement as Innovative Technologies Enhancing the Resource Efficiency of Fertilized Urea - subproject 7
- Collaborative project: Nitrogen Stabilization and Subsurface Placement as Innovative Technologies Enhancing the Resource Efficiency of Fertilized Urea - subproject 8
