Being new to vegatable growing more often than not questions arise that cannot be found in books. One being that my soil is alkaline (reading 9ph) Would it be wise to lower the ph with sulphate of ammonia or will I still get a good crop.
Veg being grown. Onions, Garlic, Cabbage, Carrots, Broccoli, Lettuce, Tomato, Parsnip, cucumber and Potato. All of which are in raised bed apart from cucumbers which will be grown in pots.

Advice welcomed. Steve.