Imidan 70-W has contact activity only, so good coverage is essential for control. Residues are short-lived. It may knockback some beneficial, predatory insects in addition to pests. It is probably best used late season to knockback multiple pests. Incompatible with alkaline materials (like lime, lime sulfur). Buffer spray solution to pH 3.5 to 5 for optimal residual activity. Make only two consecutive applications before rotating to an insecticide with a different MOA.
| Stage of Development: Emergence to Row Closure | ||||||
|---|---|---|---|---|---|---|
| Pest or Disease | MOA1 | Efficacy2 | Rate per Acre3 | REI4 | PHI5 | Notes |
| Beet Leafhopper (Circulifer tenellus) | 1B | P | 1.33 lb | 5 d | 7 d | It will control BLHs on contact but is not recommended for this pest because residues last only a few days. Products with longer residual activity are better for maintaining control of BLH during their migration periods and limiting spread of phytoplasma diseases (e.g., purple top). |
| Colorado Potato Beetle (Leptinotarsa decemlineata) | 1B | G-F | 1.33 lb | 5 d | 7 d | Apply when about 50% of eggs have hatched and larvae are small for knockback control. |
| Lygus Bugs (Lygus species) | 1B | G-F | See Label | 5 d | 7 d | Lygus bugs are on the label but not in the potato section. It can knockback lygus bugs, especially if applied when nymphs are present. |
| Potato Psyllid (Bactericera cockerelli) | 1B | F-P (a) | 1.33 lb | 5 d | 7 d | It can knockback adult psyllid populations. Products with longer residuals are preferred for controlling psyllids as they slowly migrate into potatoes. |
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 |
| Colorado Potato Beetle (Leptinotarsa decemlineata) | 1B | G-F | 1.33 lb | 5 d | 7 d | Apply when about 50% of eggs have hatched and larvae are small for knockback control. |
| Lygus Bugs (Lygus species) | 1B | G-F | See Label | 5 d | 7 d | Lygus bugs are on the label but not in the potato section. It can knockback lygus bugs, especially if applied when nymphs are present. |
| Potato Psyllid (Bactericera cockerelli) | 1B | F-P (a) | 1.33 lb | 5 d | 7 d | It can knockback adult psyllid populations. Products with longer residuals are preferred for controlling psyllids as they slowly migrate into potatoes. |
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 |
| Colorado Potato Beetle (Leptinotarsa decemlineata) | 1B | G | 1.33 lb | 5 d | 7 d | Apply when about 50% of eggs have hatched and larvae are small for knockback control. |
| Potato Psyllid (Bactericera cockerelli) | 1B | G (a) | 1.33 lb | 5 d | 7 d | It can knockback adult psyllid populations. |
| Tuberworm (Phthorimaea operculella) | 1B | F | 1.33 lb | 5 d | 7 d | Target PTW larvae feeding in the canopy in the weeks prior to vine desiccation or harvest for knockback control. PHI is 7-days. Can be re-applied after 10 days. |
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.
