Telone formulations have been the most effective fumigants for pepper. Combinations of Telone C- 17 and other fumigants with Devrinol, Dual and Tillam have not produced deleterious effects on pepper except some occasional injury from Tillam and Dual. Although Tillam seldom has been injurious in experiments at Bradenton, it has produced damage in some trials at other locations and is not labeled for use in pepper. Tillam is not likely to be labeled in pepper due to this issue. Dual has a third party registration in pepper row middles in Florida, but the manufacturer has not expressed interest in full registration in the bed until recently.
Peppers are very rate sensitive.
Dual at I pint per acre is safe but 2 pints produce injury sometimes. Unfortunately, the I pint rate does not give very good control of nutsedge. Dual needs to be incorporated in the bed, just like Tillam and Devrinol. In fact, all of our work indicates that whatever the product, if it is not incorporated to the full depth of the bed, nutsedge control will be reduced. One interesting aspect of all of this work has been the effect these alternatives have on double cropping.