When it comes to gardening, preparing your soil before you plant often gets ... However, if the pH is over 7, it's too alkaline, and you'll add sulfur to get it closer to neutral and retest.

In 1922, treatment of a light soil at Ormskirk with sulphur had given promising results, whilst in 1924 the amount of disease was reduced from 73 per cent, in untreated soil to 8 per cent ...