New N test helps get the most out of manures

摘要

There's no doubt manure is valuable, but difficulties and uncertainties in assessing its nutrient content may put many farmers off using manure nutrients to replace bought-in fertiliser. Not so for Philip Huxtable of 3,600ha JSR Farms in East Yorkshire, who can clearly see its value. He applies slurry to his wheat in the spring through a 24m dribble bar boom and later uses a tractor-mounted N-sensor to detect areas in need of a top-up with bagged N fertiliser.