10/13/2026
What if there were a way to estimate manure nitrogen levels instantly and affordably? That’s the question at the heart of new research co-led by Sustainable Conservation that looked at whether electrical conductivity could serve as a potential proxy measurement for nitrogen concentrations in liquid manure.
The team is excited by the initial results of this research and is looking forward to seeing how this practical indicator could empower growers with real-time data to confidently put dairy manure nitrogen to beneficial use, while helping protect the groundwater and waterways that California communities depend on.
Across three California dairies and more than 90 samples, EC measurements closely tracked total nitrogen, ammonium, and estimated plant-available nitrogen concentrations in blended lagoon water. The relationship was strong across farms and different manure management conditions, suggesting EC could....