Teagasc researchers find high NFRV for soiled water

SURPRISINGLY high nitrogen fertiliser replacement values (NFRV) have been found by Teagasc researchers for soiled water.

Results suggest that soiled water applied at 22kg of N/ha could replace 17kg of N/ha (CAN), while maintaining the same grass production.

A dairy farm of 100 cows produces around 600kg of N in soiled water annually. This could replace 480kg of fertiliser N, 570kg of K and 80kg of P (assuming 100% availability of K and P).