The first plot i had terry had club root i have tried rhubarb and it did not make a difference to be honest but no harm in having a go. i just made sure the ph level of the planting area was ph7.0 - 8 adding lime as required. Liming wont kill the spores but can aid in them not germinating. Lime 6 weeks before planting and then 2 weeks before.i also used to make up a bucket of water compost and sprinkling of lime mix to a slush and dip the roots in it dig a bigger hole and add the mix then plant and firm in. i tried anything. just a old blurred pic from nearly 30 years ago i never beat it but g