PHOTO: RENÉ KOERHUIS PHOTO: SAMSON AGRO
NUTRIENT ANAL ▶▶▶YSIS
Samson SlurryLab: slurry analysis using MRI technology
BY RENÉ KOERHUIS I
n 2005, German slurry technology spe- cialist Zunhammer was the first to intro- duce a ready-to-use mobile NIR sensor for direct slurry analysis. NIR stands for Near
Infrared (NIR) spectroscopy and with this type of light you can determine the ingredients, nutrients and contents of many products such as soil, grass, tubers and bulbs, maize and also slurry and digestate. Since then, var- ious manufacturers of slurry application equipment have been working on making the technology suitable and (more) reliable for real-time analysis of slurry and digestate to determine how much dry matter, nitrogen, phosphate and potassium it contains. NIR
According to the Danish slurry technology manufacturer Samson Agro and the Danish sensor specialist NanoNord, MRI scanner technology is better suited for mobile slurry analysis than NIR sensors. Ole Jensen, founder of NanoNord, expects a lot from this latest innovative technology.
spectroscopy is an indirect measurement method for which calibration curves are re- quired to translate the measurements into concrete values. The more calibration curves that are available, the more reliable the meas- urements are. And that’s the main challenge with NIR sensor technology. Each type of slur- ry is different, which makes it challenging to make sufficiently accurate measurements us- ing such a sensor.
The Danish slurry and muck application spe- cialist Samson Agro also closely follows NIR sensor developments and is able to equip its slurry tankers with the necessary brackets and technology to bolt on NIR sensors if customers ask for it. “But,” says sales and marketing man- ager Torben Larsen, “we never wanted to in- vest in our own NIR sensor because we think the accuracy of the technology is insufficient for documentation of slurry contents for
In 2005, German slurry technology specialist Zunhammer was the first to introduce a ready-to-use mobile NIR sensor called VAN Control for di- rect slurry analysis.
56 ▶ FUTURE FARMING | 22 May 2020
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