Rapid assessment of nitrogen uptake in winter wheat
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Global goals
- 2. Zero hunger
- 6. Clean water and sanitation
- 13. Climate action
- 14. Life below water
Short summary
The project calibrates simple sensors for determining nitrogen uptake in winter wheat. The aim is to make it easier to take soil nitrogen supply into account when applying supplementary nitrogen fertilizer.
Assessment of current nitrogen (N) uptake is important for the possibility to adapt supplemental N rates in winter wheat to local and current conditions. Then, the yield potential can be exploited, and a high N efficiency can be achieved. For broad use and a large overall effect, it is important with verified, simple and openly available methods for all advisors and farmers who want to measure N uptake in, for example, zero plots.
Therefore, we are going to test a number of different measurement methods – including handheld sensors and drone-mounted cameras – for rapid assessment of N uptake in winter wheat. We will also test whether reflectance-based calibration models can be transferred to satellite use.
The end-goal is an independent, open and active website where field-based methods for N uptake assessment in winter wheat are evaluated, compared, and described. The project is carried out within the framework of the Laboratory for agricultural decision support systems (LADS).