Karl is the plant pathologist for our part of Texas. This is his follow up reply about the effects of using mustards for a winter crop and then tilling them into the soil for spring. As usual if we actually wanted tests done with daffodils then we would have to do this as a group on our own fields. It looks like 30 days after tilling in the mustard it is safe to replant some of the crops. Keith Kridler Mt. Pleasant, Texas