At our allotment association quarterly get together we had an interesting presentation from Selwyn Richardson, soil scientist & ex-agricultural adviser. Selwyn handed out a really useful guide for anyone who wants to understand how to feed their veg properly.
I've managed to get a copy of the guide. To download a copy go to my blog site below & click the link under the Welcome! section on the top right. A window will open for Ovi, just page down & click the 'Download' link.
What makes the guide so useful? It not only explains the major nutrients that vegetables need, but gives the content of these in various manures (including whether spread autumn or spring), the spread rate, when to apply on a 4 year or 5 year rotation, and if you're not doing things organically how much nutrients to apply directly.
Selwyn said he buys his nutrients (e.g. nitrogen) from Garden Direct (
Garden Direct, Weed Killers, Fertilisers, Garden Compost Products, Garden Fertilizers, Wood Treatment, Cuprinol Sprayer, Moss Killer)... he recommended against such things as Growmore ( weak fertiliser, high price) or seaweed (little nutritional value). Happily he gave me another reason to value my chickens... they produce by far the best of the manures he listed.
Hope you find the guide useful. John
Allotment Heaven