Stale Seedbed
The following herbicides are nonselective and are used to control weeds that are present in a field prior to planting or before the crop emerges, which is especially useful for the Stale Seedbed Technique (see the Weed Management section for more information).
- glyphosate (Roundup Power Max): PHI 14d, REI 4h, Group 9.
- pelargonic acid (Scythe): PHI 1d, REI 12h, Group 0.
Preemergent Herbicides (before weeds germinate)
HRAC Group 15:
- cycloate (Ro-Neet): 0.5 to 0.66 gal/A; PHI 45d, REI 48h. Beets only. Apply before, during, or immediately after planting.
HRAC Group 15:
- s-metolachlor (Dual Magnum): PHI 62d for Swiss chard, REI 24h. MA, ME, and NH only. Restricted label: Make sure the label for your state is available for download before using this product. Full label instructions are supplied to growers who apply through the website www.syngenta-us.com/labels/indemnified-label-login and agree to a waiver of liability. Main target weeds for this registration are galinsoga and yellow nutsedge.
Postemergent Herbicides (after weeds germinate)
HRAC Group 0:
- pelargonic acid (Scythe): 3 to 10% solution; PHI 1d, REI 12h. Apply as a vegetative burndown or as a directed and shielded spray. For beets only, can also be applied after seeding but prior to crop emergence, after harvest, and as a harvest aid. Contact with crop will cause damage.
HRAC Group 1:
- clethodim (Select Max): 9 to 16 fl oz/A; PHI 30d for beets, 14d for Swiss chard, REI 24h. Do not exceed 64 fl oz/A per year. Apply to actively growing grasses.
- sethoxydim (Poast): 0.75 to 2.5 pt/A for beets, 0.75 to 1.5 pt/A for Swiss chard; PHI 60d for beets, 30d for Swiss chard, REI 12h. Do not exceed 5 pt/A per year (beets) or 3 pt/A (chard). Apply to actively growing grasses. BASF has stopped production and will discontinue the registration at the end of 2027.
HRAC Group 4:
- clopyralid (Stinger): 4 to 8 fl oz/A; PHI 30d, REI 12h. Beets only. Do not exceed 8 fl oz/A per year. Apply when beets are in the 2- to 8-leaf stage and weeds are actively growing. Spray additives are not recommended.
HRAC Group 9:
- glyphosate (Roundup Power Max): 10 fl oz to 3.1 qt/A; PHI 14d, REI 4h. Do not exceed 5 qt/A per year. Apply during fallow intervals, prior to planting, at planting, or to row middles with a hooded or shielded sprayer or wiper applicator. For beet roots, can also be applied after direct-seeding but before crop emergence. Spray contact can cause plant death. Spray additive recommendation varies with formulation–see label.
HRAC Group 14:
- carfentrazone (Aim EC): 0.5 to 2 fl oz/A; PHI 0d, REI 12h. Do not exceed 6.1 fl oz/A per year. Apply as a pre-plant burn-down up to 7 days before seeding or 1 day before transplanting, or to row middles of emerged crop with hooded sprayer. Contact with crop will cause damage.