[Rich72]

I was busy planting out my brassicas yesterday (4 x red cabbage, 10 x green cabbage, 6 x Brussels and 8 x cauli) my plot neighbour asked me if I had ever thought of putting a piece of rhubarb in the brassica planting hole as a club root deterant. He says it reduces club root by 60%. He is a very knowledgable chap and always gives me advice, so I thought 'why not'. Got loads of rhubarb spare so 1-2 inch piece of rhubarb went into each hole. Has anyone else heard of this?
I hope it works, out of 12 spring cabbages planted last year, 1 fell prey to a very determined pigeon and 6 just keeled over and died

[sunshineband]

Heard of it yes, any use: no!

Club root likes acid conditions so putting rhubarb in increases acidity = not going to help

One of those urban myths  

Better solution (if you actually do have club root) is to grow plants in modules and plant them out at about 4 - 6 ins tall, when they have a fighting chance. Add lime to the soil before planting, and keep plants netted against butterfiles and pigeons  

[Rich72]

I thought it sounded a little too simple to be of benefit. All my brassicas were about 6 inches high when I planted them out, didn't put any lime in though.

[sunshineband]

If they are growing well then the roots are functioning properly, so no club root.

You can easily tell if there is something wrong as they don't thrive