BBCNEWS BBC Wales Investigates June 4, 2024 05:39:00
They estimate that around 7,500 tonnes of phosphorus gets into the soil around the river wye every year. much of that by spreading muck from poultry farms. but only some of that is absorbed by crops. the rest is extra. youre left with a difference of about 3000 tonnes of phosphorus that is above the crop requirement of what we would call a surplus. which is nationally very high, its about 60% greater than the national average. fundamentally, if you have a surplus, you are too much phosphorus in ...
Source: archive.org