By Leon J. Wrage, SDSU Extension Weed Specialist and Darrell L. Deneke, SDSU Extension IPM Coordinator
Residue tolerances are established for grazing and harvesting hay. The interval between application and harvest may specify lactating dairy or slaughter. In situations where CRP is approved for haying or grazing, the field may have been spot treated for noxious weeds. If the interval is restrictive for hay harvest, it may be possible to omit those patches from the harvest.
| Product | Grazing Restriction | Haying Restriction |
|---|---|---|
| Tordon | 1 qt/A or more Lactating dairy - 14 dy Non-lactating dairy & Beef - none¹ Slaughter interval - 3 dy |
1 qt/A or more - 14 days |
| 2,4-D | Lactating dairy - 7 dy Slaughter interval - 3 dy |
30 dy |
| Grazon P + D (picloram + 2,4-D amine) |
Lactating dairy - 14 dy Other livestock - no restrictions |
30 dy |
| Banvel, Clarity, Sterling (dicamba) |
Lactating dairy: 1 pt/A - 7 dy 1 qt/A - 21 dy 2 qt/A - 40 dy Non-lactating dairy & Beef - none Slaughter interval - 30 dy |
Lactating dairy: 1 pt/A - 37 dy 1 qt/A - 51 dy 2 qt/A - 70 dy |
| Stinger Transline (clopyralid) |
none¹ |
none |
| Curtail (clopyralid + 2,4-D) |
Lactating dairy - 14 dy |
30 dy |
| Ally/Cimarron Escort (metsulfuron) |
None >1.66 oz - 3dy |
Use not listed >1.66 oz - 3 dy |
| Cimarron Max (metsulfuron-methyl) |
Lactating dairy - 7 dy Slaughter interval - 30 dy |
Lactating dairy - 37 dy |
| Crossbow (triclopyr + 2,4-D) |
Lactating dairy: |
Lactating dairy - next yeat |
| Redeem (triclopy + clopyralid) |
Lactating dairy - 14 dy Other livestock - no restriction¹ |
Lactating dairy - do not harvest until next growing season. Other livestock - 7 dy |
| Glyphosate Products | Slaughter interval - 3 dy Spot Treatment* - 14 dy Broadcast treatment - 8 wks |
Spot treatment - 14 dy Broadcast treatment - 8 wks |
| Plateau (imazameth) |
None | Do not harvest for 7 dy |
| Telar (chlorosulfuron) |
None for <1.3 oz | Use not limited |
| Amber (Triasulfuron) |
None | 30 dy |
| Rave/Fuego (triasulfuron + dicamba) |
Lactating dairy - 7 dy Slaughter interval - 30 dy |
Use not listed |
¹Remove livestock to untreated grass pasture for 7 days before transferring livestock to broadleaf or broadleaf-mixed pasture areas. Otherwise urine may contain enough product to cause injury to sensitive broadleaf plants.
²Withdrawal not needed if 2 weeks or more time elapsed since application
³If less than 25% of grazed area is treated, there is no grazing restriction
*Do not treat more than 10% of any given acre at one time with spot or wiper applications. Remove livestock before application.