#phosphate pollution

[thoughtlessarse]

Chicken manure can be classified as industrial waste, judge rules

US-style mega-farms in Herefordshire face tough new regulations after high court ruling

Industrial poultry farms face tough new regulations around the disposal of chicken manure after a judge ruled it can be classified as waste and requires a detailed and transparent plan to dispose of it without damaging the environment. The high court ruling means new US-style mega-farms in Herefordshire will have to deal with poultry manure as if it was industrial waste. The ruling has implications for industrial chicken units all over the country. It comes as the English and Welsh governments announced £1m in funding to investigate the devastating pollution of the River Wye, where about 23m chickens are being produced in the river catchment at any one time. The health of the river, which flows for 155 miles from mid-Wales to the Severn estuary in England, has been downgraded by Natural England from “unfavourable-improving” to “unfavourable-declining”, meaning its condition is poor and worsening. Its decline has been linked to intensive chicken farming in the catchment from the spreading of poultry manure, which contains high levels of phosphate, on to fields, which then leaches into the river. Studies have shown 70% of the phosphate in the River Wye catchment comes from agriculture, although not all is chicken-related. One study recommended an 80% reduction in poultry manure in the Wye catchment to protect the river and called for a cut in the overall number of birds and for the exporting of manure out of the area.

continue reading

[thoughtlessarse]

Phosphate fertiliser 'crisis' threatens world food supply

Use of essential rock phosphate has soared, but scientists fear it could run out within a few decades

The world faces an “imminent crisis” in the supply of phosphate, a critical fertiliser that underpins the world’s food supply, scientists have warned. Phosphate is an essential mineral for all life on Earth and is added to farmers’ fields in huge quantities. But rock phosphate is a finite resource and the biggest supplies are mined in politically unstable places, posing risks to the many countries that have little or no reserves. 

Phosphate use has quadrupled in the last 50 years as the global population has grown and the date when it is estimated to run out gets closer with each new analysis of demand, with some scientists projecting that moment could come as soon as a few decades’ time...

...At current rates of use, a lot of countries are set to run out of their domestic supply in the next generation, including the US, China and India, he said. Morocco and the Moroccan-occupied territory of Western Sahara host by far the largest reserve, with China, Algeria and Syria the next biggest, together representing more than 80% of global rock phosphate.

...Potential solutions include recycling phosphate from human sewage, manure and abattoir waste, new plant breeds that can draw the mineral from the soil more effectively and better soil tests to help end the over-application of the fertiliser.