[Auntiemogs]

I know i know, but i like things to be just so

I think it's my engineering background that make me think and plan logically and formally 

Argh, im afflicted with something Argh   

I shal try to be less precise and specific and, ohh, no use.   

blimey is that what my husband suffers from (him being an engineer) speaks in mm complicates EVERYTHING by thinking to hard drives me nuts he trys to work out everything before it happens just in case it might which is why its now my allotment and not ours 

Ummm....probably.....

[lacewing]

Why not try common sense.  Rotation:  move stuff around and follow on with crops which will benefit from what was grown in the bed previously.....simples!

[Yorkie]

Why not try common sense.  Rotation:  move stuff around and follow on with crops which will benefit from what was grown in the bed previously.....simples!

That's exactly what the standard rotation plans do - they just help you by telling you which plants follow on best. 

However, the suggestion that "common sense" is all you need, implies that the answer can be worked out without any knowledge of the subject.  If you don't know the details of fertilisers and elements, i.e. why which plant family follows on best from which, then you need a plan.  The answer is only easy if you know it.  Which is where the original question comes in.

[sunshineband]

Coming got this thread rather belatedly (and I have read it  ) there is a refinement to the two beds for brassicas and not following on from other brassicas' model that is useful imho

Use one for tall, long-time-in- the -ground sorts, like PSB and sprouts and one for the quicker sorts like caulis and cabbages. Plant the winter cabbages where the spring ones were, to keep things tidy, just give the ground a good feed of somehting nitrogenous like chicken pellets in between and ensure it is still compact enough. (I grow only a very few summer ones)

Werks fer me 

[lacewing]

Why not try common sense.  Rotation:  move stuff around and follow on with crops which will benefit from what was grown in the bed previously.....simples!

That's exactly what the standard rotation plans do - they just help you by telling you which plants follow on best. 

However, the suggestion that "common sense" is all you need, implies that the answer can be worked out without any knowledge of the subject.  If you don't know the details of fertilisers and elements, i.e. why which plant family follows on best from which, then you need a plan.  The answer is only easy if you know it.  Which is where the original question comes in.

Would it not be a geed idea then  to study 'knowledge of the subject' if you intend to grow vegetables?

[Yorkie]

Of course, and part of studying is asking questions of more experienced people - which is what this forum is for 

[lacewing]

Blame the weather, I need to get to the plot!

[stompy]

Thans for all the answers guys.

I know that brassicas are supposed to go in after legumes due to legumes being nitrogen  fixers so thsts not a problem for one bed, but it's the second bed!

I think im getting a little too fixated on rotation because of disease.

[Salmo]

There is really only one answer to this. You are trying to grow too many brassicas for the space you have available.

I am amazed that so many wise people have encouraged you to grow brassicas two years running. 3 or 4 years gap is sensible.

Either scale down the amount of each brassica you grow or cut out the types that are not profitable or you do not really like.

If you grow brassicas too much you will almost certainly run into trouble with clubroot. As many on this site will tell you, once you have it you cannot get rid of it.

[mumofstig]

In one way I agree Salmo, but if brassicas are what crops you want/need to grow, why feel that you have to grow other crops instead.
growing brassicas doesn't give you clubroot, you have to import it in some way and as long as you don't accept seedlings from others, or buy them from market stalls, you stand a good chance of staying clear of it.

One way of looking at it is........worry about clubroot when you get it

As long as you don't follow one crop with the same family the next year, I don't see a rotation problem.