In addition to the PHIs provided by Dr. Marshall, note that the PHI for Cadre is 90 days. The PHI is the minimum number of days that must pass between application of a pesticide and harvesting (threshing/combining - not digging.) For example, if peanuts were harvested October 1, the last date a herbicide with a PHI of 75 days could be sprayed would be July 15. For Cadre, the last date would be July 1. For herbicides with a PHI of 45 days, the last date for application would be August 15 if peanuts were harvested October 1.

Until we get to early to mid-September it is difficult to know when we will dig and/or combine peanuts. A key to minimizing risk of residues in peanuts is to apply herbicides as early in the season as possible. Effective weed control with PPI, PRE and early POST applications of herbicides is important. When POST herbicides are applied early in the season with herbicides that have residual activity, it is more likely that a late-season POST herbicide will not be needed.

We need to be aware of the challenges the shelling community faces in terms of residues with some of their buyers. Access to markets benefits all segments of the peanut industry.