Nitrogen (15N)-Enriched Fertilizer Preparation and Application
2:40
Field Sample Processing: Aboveground Corn Biomass
3:32
Field Sample Processing: Soil
4:20
Lab Sample Processing: Soil and Plant Sample Grinding
4:51
Sample Encapsulation for Processing
6:22
Results: Representative Fertilized-Derived Nitrogen (FDN) Partitioning and Budgeting
8:04
Conclusion
Transcription
This methodology can help researchers quantify the impacts of fertilizer drive nitrogen on the soil crop system and answer questions about nitrogen use efficiency. The main advantage of this technique is that it allows for multiple in seasons soil
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A microplot design for 15N tracer research is described to accommodate multiple in-season plant and soil sampling events. Soil and plant sample collection and processing procedures, including grinding and weighing protocols, for 15N analysis are put forth.