Assail 70 WP works via contact and ingestion. Translaminar and foliar systemic (moves to new leaves). Use a non-ionic or silicone surfactant or a MSO spray adjuvant to enhance spray coverage. Don’t use stickers. Chemigation may be best when the canopy is dense; use 0.2-inch water or less and the highest allowed rate. Don’t apply Assail 70WP or other neonicotinoid insecticides (Group 4A) if one was applied at planting or at hilling. Make only two consecutive in-season, foliar applications of Assail 70WP. Similar products with acetamiprid are available but use rates vary.
| Stage of Development: Emergence to Row Closure | ||||||
|---|---|---|---|---|---|---|
| Pest or Disease | MOA1 | Efficacy2 | Rate per Acre3 | REI4 | PHI5 | Notes |
| Aphid (various species) | 4A | E | 1-1.7 oz | 12 h | 7 d | Apply when aphids are first detected. |
| Beet Leafhopper (Circulifer tenellus) | 4A | E | 0.6-1.7 oz | 12 h | 7 d | Apply when BLHs are present to minimize spread of phytoplasma diseases (e.g., purple top). Retreat after 7-10 days to maintain control of incoming BLHs. |
| Colorado Potato Beetle (Leptinotarsa decemlineata) | 4A | E | 0.6-1.7 oz | 12 h | 7 d | Apply when about 50% of the eggs have hatched larvae are small. |
| Potato Psyllid (Bactericera cockerelli) | 4A | G (a) | 0.6-1.7 oz | 12 h | 7 d | The label does not mention potato psyllids, but applications targeting other pests can control them. Apply when adult psyllids are migrating into the field. |
1Mode of action. NC = not classified..
2 Efficacy ratings denote the relative ability of a pesticide to control its target. The ratings are E = excellent, G = good, F = fair/suppression; P = poor, and ND = no data. Efficacy ratings are based on the inherent toxicity of the pesticide against its target, the likelihood that the target will contact or ingest the product as applied, duration of impact on the target, and undesired effects, such as negative impacts on natural enemies that could lead to future pest outbreaks.
3 Rate per acre per application. Refer to the product label for maximum use rate per season.
4 Reentry interval.
5The minimum pre-harvest interval. Some products do not list PHI.
Note: always read and follow the directions on the pesticide label.
| Stage of Development: Tuber Bulking | ||||||
|---|---|---|---|---|---|---|
| Pest or Disease | MOA1 | Efficacy2 | Rate per Acre3 | REI4 | PHI5 | Notes |
| Aphid (various species) | 4A | E | 1-1.7 oz | 12 h | 7 d | Apply when aphids are first detected. |
| Beet Leafhopper (Circulifer tenellus) | 4A | E | 0.6-1.7 oz | 12 h | 7 d | Apply when BLHs are present to minimize spread of phytoplasma diseases (e.g., purple top). Retreat after 7-10 days to maintain control of incoming BLHs. |
| Colorado Potato Beetle (Leptinotarsa decemlineata) | 4A | E | 0.6-1.7 oz | 12 h | 7 d | Apply when about 50% of the eggs have hatched larvae are small. |
| Potato Psyllid (Bactericera cockerelli) | 4A | G (a) | 0.6-1.7 oz | 12 h | 7 d | The label does not mention potato psyllids, but applications targeting other pests can control them. Apply when adult psyllids are migrating into the field. |
1Mode of action. NC = not classified..
2 Efficacy ratings denote the relative ability of a pesticide to control its target. The ratings are E = excellent, G = good, F = fair/suppression; P = poor, and ND = no data. Efficacy ratings are based on the inherent toxicity of the pesticide against its target, the likelihood that the target will contact or ingest the product as applied, duration of impact on the target, and undesired effects, such as negative impacts on natural enemies that could lead to future pest outbreaks.
3 Rate per acre per application. Refer to the product label for maximum use rate per season.
4 Reentry interval.
5The minimum pre-harvest interval. Some products do not list PHI.
Note: always read and follow the directions on the pesticide label.
| Stage of Development: Late Tuber Bulking to Harvest | ||||||
|---|---|---|---|---|---|---|
| Pest or Disease | MOA1 | Efficacy2 | Rate per Acre3 | REI4 | PHI5 | Notes |
| Aphid (various species) | 4A | E | 1-1.7 oz | 12 h | 7 d | Apply when aphids are first detected. |
| Colorado Potato Beetle (Leptinotarsa decemlineata) | 4A | E | 0.6-1.7 oz | 12 h | 7 d | Apply when about 50% of the eggs have hatched larvae are small. |
| Potato Psyllid (Bactericera cockerelli) | 4A | G (a) | 0.6-1.7 oz | 12 h | 7 d | The label does not mention potato psyllids, but applications targeting other pests can control them. Apply when adult psyllids are migrating into the field. |
1Mode of action. NC = not classified..
2 Efficacy ratings denote the relative ability of a pesticide to control its target. The ratings are E = excellent, G = good, F = fair/suppression; P = poor, and ND = no data. Efficacy ratings are based on the inherent toxicity of the pesticide against its target, the likelihood that the target will contact or ingest the product as applied, duration of impact on the target, and undesired effects, such as negative impacts on natural enemies that could lead to future pest outbreaks.
3 Rate per acre per application. Refer to the product label for maximum use rate per season.
4 Reentry interval.
5The minimum pre-harvest interval. Some products do not list PHI.
Note: always read and follow the directions on the pesticide label.
