14 April 1995

Nutrients sampled

IT IS one thing to spread muck and slurry on to land, but it is quite another to know just what nutrients are being applied – and at what rate.

A well supported argument which most would agree with but few appear to act on.

"Slurry nutrient analysis can be determined both cheaply and quickly using a simple hydrometer," says Bob Painting of Chippenham-based machinery importer Qualex.

According to Mr Painting, a dry matter reading of, say, 8% in cattle slurry, would result in each 10t of the slurry containing 43kg of nitrogen, 8kg of phosphorous and 31kg of potash.