About 20 years ago, a theory emerged that the soils of the earth were in need of remineralising. It suggests that glaciers spread highly mineralised soil over the earth, increasing fertility when the glaciers retreated. Since then, most of this has been used up, and needs replacing.
Spreading rock dust (from quarries) has been tried for years by the SEER centre in Scotland, near Blairgowrie - good results are claimed, such as larger, healthier veg from previously infertile soil.
'We have been dismissed as cranks and loonies over the years' says SEER founder, Cameron Thompson, 'but we must be doing something right'...
Glasgow Uni has just begun a three year examination of his methods and results.
what do obodies think of this theory?