Page 1 of 1
club root on cabbages
Posted: Wed Jul 22, 2009 4:56 pm
by david71
Has anyone had experience of using calomal dust to protect plants from clubroot ?
If so could you let me know how it should be used and were to get it.
David 71
Re: club root on cabbages
Posted: Wed Jul 22, 2009 5:09 pm
by Geoff
I think it was withdrawn several years ago.
Re: club root on cabbages
Posted: Wed Jul 22, 2009 7:54 pm
by John
I think Geoff is right. Calomel is a mercury compound and it was withdrawn from insecticide use some time ago now.
John
Re: club root on cabbages
Posted: Wed Jul 22, 2009 10:04 pm
by Geoff
I've found one reference :
"The following correction was printed in the Guardian's Corrections and clarifications column, Saturday April 12 2008
We should not have recommended dipping the roots of brassicas in calomel dust to prevent club root. Calomel (mercurous chloride) is banned in the UK."
Re: club root on cabbages
Posted: Thu Jul 23, 2009 7:48 pm
by david71
Many thanks to John and Geoff, I can stop looking for this product.
David71
Re: club root on cabbages
Posted: Tue Aug 04, 2009 8:01 pm
by allium
I use builders lime on my allotment for club root. I give a good dusting along the rows before planting and then dust inside each planting hole. It does not scorch the plants and I think it helps to deter root fly. If I don't follow this procedure my brassicas only last weeks.