Baythroid XL has contact and ingestion activity. It is toxic to many kinds of insects with a relatively long duration of impact from residues.This and other pyrethroid insecticides (Group 3) should not be used mid-season because they kill predatory insects that help to keep aphids, psyllids, thrips, and spider mites in check. Baythroid XL is not systemic or translaminar, but residues should persist for 7-14 days. Re-apply if needed to protect new foliage. Make only two consecutive applications before rotating to an insecticide with a different MOA. Similar products with beta-cyfluthrin are available but use rates vary.
Restricted
Material Type:
Insecticides and Repellents
Chemical Classification:
Pyrethroid
Signal Word:
Warning
Formulation:
Liquid
EPA Number:
264-840
Usage for beta-cyfluthrin on Potatoes
Max Application per Season: 16.8fl oz
Emergence to Row Closure
| Target | Application per Acre | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Aphid | 2.8 fl oz | 12 h | 0 d | 3 | F-P | Apply before aphid populations build, but only if it’s before mid-June. Not very effective for aphids. |
| Armyworms, Cutworms, Loopers | 1.6 to 2.8 fl oz | 12 h | 0 d | 3 | G | Apply when small caterpillars are present, but only if it’s before mid-June. |
| Beet Leafhopper | 0.8-1.6 fl oz | 12 h | 0 d | 3 | G | Apply in May and/or early-to-mid June if BLH populations are building. |
| Colorado Potato Beetle | 1.6-2.8 fl oz | 12 h | 0 d | 3 | G | Apply at 50% egg hatch while larvae are small, but only if it’s before mid-June. |
| Lygus Bugs | See Label fl oz | 12 h | 0 d | 3 | G | Lygus bugs are on the label but not in the potato section. Apply when nymphs are present if it’s before mid-June. |
| Potato Psyllid | 1.6-2.8 fl oz | 12 h | 0 d | 3 | G (n+a) | Apply when adult psyllids are migrating into the field and it’s before mid-June. If early nymphs are present, it may not control nymphs on the underside of leaves where the product is not well distributed. |
Tuber Bulking
| Target | Application per Acre | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Aphid | 2.8 fl oz | 12 h | 0 d | 3 | P | Use of pyrethroid insecticides is not recommended mid-season. Not very effective for aphids. If used, apply before aphid populations build. Monitor for subsequent pest outbreaks. |
| Armyworms, Cutworms, Loopers | 1.6 to 2.8 fl oz | 12 h | 0 d | 3 | P | Pyrethroid insecticides should not be applied mid-season. If used, apply when small caterpillars are present. Monitor for subsequent pest outbreaks. |
| Colorado Potato Beetle | 1.6-2.8 fl oz | 12 h | 0 d | 3 | P | Use of pyrethroid insecticides is not recommended mid-season. If used, apply when larvae are small. Monitor for subsequent pest outbreaks. |
| Lygus Bugs | See Label fl oz | 12 h | 0 d | 3 | P | Lygus bugs are on the label but not in the potato section. Use of pyrethroid insecticides is not recommended mid-season. If used, apply when nymphs are present. Monitor for subsequent pest outbreaks. |
| Potato Psyllid | 1.6-2.8 fl oz | 12 h | 0 d | 3 | P | Use of pyrethroid insecticides is not recommended mid-season. If used, apply when psyllids are present. It may not control nymphs on the underside of leaves where the product is not well distributed. Monitor for subsequent pest outbreaks. |
Late Tuber Bulking to Harvest
| Target | Application per Acre | REI | PHI | MOA | Eff. | Notes |
|---|---|---|---|---|---|---|
| Colorado Potato Beetle | 1.6-2.8 fl oz | 12 h | 0 d | 3 | G | Apply at 50% egg hatch while larvae are small. |
| Potato Psyllid | 1.6-2.8 fl oz | 12 h | 0 d | 3 | G (n+a) | Apply when psyllids are present. |
| Tuberworm | 1.6-2.8 fl oz | 12 h | 0 d | 3 | E | Target PTW larvae feeding in the canopy in the weeks prior to vine desiccation or harvest. Baythroid XL has a 0-day PHI. |