On Wed, 24 Feb 2010 15:23:34 -0000, "Bob Hobden"
wrote:

How much manure do you put on your potato bed each year, I
spread about 4 inches thick layer all over before digging it in and I'm on
clay/silt,

I normally do that but this year our manure was contaminated with that
persistent herbicide :-(
--
Mike.