Damage: Aphids can cause premature senescence and reduce yields, especially large populations. But the main economic impact of aphids on potatoes is virus transmission, especially Potato Leafroll Virus (PLRV) and Potato Virus Y (PVY). Green peach aphid and potato aphid are the most common aphid species in potato fields, but other aphids can spread viruses while passing through in search of more suitable hosts.
Scouting: Potato growers should monitor fields for aphids often to identify early infestations. Aphids can reproduce rapidly and large infestations can be difficult to control with a single insecticide application.
Control: Some aphicides are better than others at limiting spread of PVY. Many that work via ingestion kill aphids too slowly to prevent spread; an exception is selective feeding blockers that kill slowly but stop feeding within hours. Contact insecticides can be useful to knockback aphid populations, but many do not have long enough residual activity or coverage of new growth to prevent migrating aphids from spreading PVY between applications.
| Stage of Development: Planting to Pre-emergence | ||||||
|---|---|---|---|---|---|---|
| Pesticide | MOA1 | Efficacy2 | Rate per Acre3 | REI4 | PHI5 | Notes |
| Platinum 75 SG thiamethoxam | 4A | E | 1.66-2.67 oz | 12 h | It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. | |
| Admire Pro (soil application) imidacloprid | 4A | E | 5.7-8.7 fl oz | 12 h | It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. | |
| Belay (soil application) clothianidin | 4A | E | 9-12 fl oz | 12 h | It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. | |
| Thimet 20-G SmartBox phorate | 1 | G-F | See Label | 72 h | 90 d | Expect only 50 days of residual control. It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. |
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: Emergence to Row Closure | ||||||
|---|---|---|---|---|---|---|
| Pesticide | MOA1 | Efficacy2 | Rate per Acre3 | REI4 | PHI5 | Notes |
| Transform WG sulfoxaflor | 4C | E | 0.75-1.5 oz | 24 h | 7 d | Early-to-mid season application will cover aphids and some other migrating pests. Apply when aphids are migrating into potatoes. |
| Vydate C-LV oxamyl | 1A | G-F | 1.1-2.1 pt | 48 h | 7 d | Applications targeting nematodes may suppress aphids but are not expected to control large infestations. Apply before populations build, or before an earlier systemic aphicide breaks down. Re-treat after 14-days if aphids continue to move into the field and your goal is to limit spread of Potato Virus Y. |
| Admire Pro (foliar) imidacloprid | 4A | G | 1.3 fl oz | 12 h | 7 d | Apply to foliage when aphids are first detected. Expect shorter residual activity compared to seed treatment or soil application of Admire Pro. |
| Lannate LV methomyl | 1A | F | 1.5-3.0 pt | 48 h | 6 d | It will knockback aphids. Products with longer residuals are preferred for controlling migratory aphids and limiting Potato Virus Y spread. Better for late season to knockback multiple pests. |
| Carbine 50 WG flonicamid | 29 | E | 2.0-2.8 oz | 12 h | 7 d | Apply before populations start to build, or before a systemic aphicide treatment breaks down. Rapid feeding cessation, so it is a good choice to limit spread of Potato Virus Y. |
| Fulfill pymetrozine | 9B | E | 2.75-5.5 oz | 12 h | 14 d | Apply before populations start to build, or before a systemic aphicide treatment breaks down. Rapid feeding cessation, and aphids die 3-5 days later. A good choice to limit spread of Potato Virus Y. Apply 5.5 oz/A if also targeting psyllids. |
| Movento HL spirotetramat | 23 | E-G | 2.0-2.5 fl oz | 24 h | 7 d | Apply before populations build, or about 10 days before an earlier systemic insecticide breaks down. It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. |
| Asana XL esfenvalerate | 3 | F-P | 5.8-9.6 fl oz | 12 h | 7 d | Apply before aphid populations start to build, but only if it’s before mid-June. Not particularly effective for aphids. |
| Athena abamectin (avermectin) and bifenthrin | 3, 6 | F-P | 7-17 fl oz | 12 h | 21 d | Apply before aphid populations build, but only if it’s before mid-June. Not very effective for aphids. |
| Baythroid XL beta-cyfluthrin | 3 | F-P | 2.8 fl oz | 12 h | 0 d | Apply before aphid populations build, but only if it’s before mid-June. Not very effective for aphids. |
| Warrior II lambda-cyhalothrin | 3 | F-P | 1.28-1.92 fl oz | 24 h | 7 d | Apply before aphid populations start to build, and it is before mid-June. Not particularly effective for aphids. |
| Mustang Maxx zeta-cypermethrin | 3 | F-P | 3.2-4.0 fl oz | 12 h | 1 d | Apply before aphid populations start to build, and it is before mid-June. Not particularly effective for aphids. |
| Dimethoate 400 EC dimethoate | 1B | G | 0.5-1.0 pt | 48 h | 0 d | It will knockback aphid populations, but products with longer residual activity are preferred for controlling migratory aphids and limiting Potato Virus Y spread. Better for late season to knockback multiple pests. |
| Torac tolfenpyrad | 21A | G | 17-21 fl oz | 12 h | 14 d | Apply when aphids are present for knockback control with anti-feeding. Contact insecticide with limited residual activity, so good coverage is important, especially when leaf growth is rapid, and other insecticides may be needed to extend control. |
| Exirel cyantraniliprole | 28 | G | 13.5-20.5 fl oz | 12 h | 7 d | Apply before aphid populations build. Rapid anti-feeding activity helps to limit spread of viruses, like Potato Virus Y, that spread quickly. |
| Minecto Pro abamectin, cyantraniprole | 6, 28 | G | 10 fl oz | 12 h | 14 d | Apply before aphid populations build. Rapid anti-feeding activity helps to limit spread of viruses, like Potato Virus Y, that spread quickly. The abamectin in Minecto Pro is not very effective for aphids. |
| Sivanto 200 SL flupyradifurone | 4D | E | 7-10.5 fl oz | 4 h | 7 d | Early-to-mid season application will cover several migrating pests. Apply before populations build. Rapid anti-feeding activity helps to limit spread of viruses, like Potato Virus Y, that spread quickly. Use the highest allowed rate when aphid pressure is high, foliage is dense, or with aerial application. |
| Assail 70WP acetamiprid | 4A | E | 1-1.7 oz | 12 h | 7 d | Apply when aphids are first detected. |
| Actara thiamethoxam | 4A | E | 3 oz | 12 h | 14 d | Apply when aphids are first detected. |
| Sefina afidopyropen | 9D | E | 3 fl oz | 12 h | 7 d | Apply at the first sign of aphids. Anti-feeding activity should limit spread of potato viruses. |
| Leverage 360 beta-cyfluthrin, imidacloprid | 3, 4 | G | 2.8 fl oz | 12 h | 7 d | Apply before aphid populations build, but only if it’s before mid-June. |
| Brigadier bifenthrin, imidacloprid | 3, 4A | G | 3.8-6.14 fl oz | 12 h | 21 d | Apply before aphid populations build, but only if it’s before mid-June. |
| Cormoran novaluron, acetamidiprid | 15, 4A | G | 9-12 fl oz | 12 h | 14 d | Apply when aphids are first detected. The novaluron in Cormoran is not very effective for aphids. |
| Aza-Direct azadirachtin | NC | F-P | 1-3.5 pt | 4 h | 0 d | Apply when aphids first appear. It may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Does not provide immediate mortality. |
| Neemix 4.5 IGR azadirachtin | NC | F-P | 5-7 fl oz | 4 h | 0 d | Apply when aphids first appear. It may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Does not provide immediate mortality. |
| PyGanic Crop Protection EC 5.0 pyrethrins | 3A | F-P | 4.5-15.61 fl oz | 12 h | 0 d | Apply when insects first appear. Don’t wait until plants are heavily infested. It may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. |
| BioCover MLT mineral oil/petroleum distillate | NC | F-P | See Label | 4 h | Apply when aphids first appear to limit spread of Potato Virus Y, or before aphids are present in large numbers if the goal is to keep aphid numbers in check and virus spread is not a concern. | |
| Trilogy neem oil | NC | F-P | See Label | 4 h | 0 d | Apply before aphids are present in large numbers if the goal is to keep aphid numbers in check and virus spread is not a concern. Apply when aphids first appear to limit virus spread, however it may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Does not provide immediate mortality. |
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 | ||||||
|---|---|---|---|---|---|---|
| Pesticide | MOA1 | Efficacy2 | Rate per Acre3 | REI4 | PHI5 | Notes |
| Transform WG sulfoxaflor | 4C | E | 0.75-1.5 oz | 24 h | 7 d | Early-to-mid season application will cover aphids and some other migrating pests. Apply when aphids are migrating into potatoes. |
| Vydate C-LV oxamyl | 1A | G-F | 1.1-2.1 pt | 48 h | 7 d | Applications targeting nematodes may suppress aphids but are not expected to control large infestations. Apply before populations build, or before an earlier systemic aphicide breaks down. Re-treat after 14-days if aphids continue to move into the field and your goal is to limit spread of Potato Virus Y. |
| Lannate LV methomyl | 1A | F | 1.5-3.0 pt | 48 h | 6 d | It will knockback aphids. Products with longer residuals are preferred for controlling migratory aphids and limiting Potato Virus Y spread. Better for late season to knockback multiple pests. |
| Carbine 50 WG flonicamid | 29 | E | 2.0-2.8 oz | 12 h | 7 d | Apply before populations start to build, or before a systemic aphicide treatment breaks down. Rapid feeding cessation, so it is a good choice to limit spread of Potato Virus Y. |
| Fulfill pymetrozine | 9B | E | 2.75-5.5 oz | 12 h | 14 d | Apply before populations start to build, or before a systemic aphicide treatment breaks down. Rapid feeding cessation, and aphids die 3-5 days later. A good choice to limit spread of Potato Virus Y. Apply 5.5 oz/A if also targeting psyllids. |
| Movento HL spirotetramat | 23 | E-G | 2.0-2.5 fl oz | 24 h | 7 d | Apply before populations build, or about 10 days before an earlier systemic insecticide breaks down. It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. |
| Dimethoate 400 EC dimethoate | 1B | G | 0.5-1.0 pt | 48 h | 0 d | It will knockback aphid populations, but products with longer residual activity are preferred for controlling migratory aphids and limiting Potato Virus Y spread. Better for late season to knockback multiple pests. |
| Torac tolfenpyrad | 21A | G | 17-21 fl oz | 12 h | 14 d | Apply when aphids are present for knockback control with anti-feeding. Contact insecticide with limited residual activity, so good coverage is important, especially when leaf growth is rapid, and other insecticides may be needed to extend control. |
| Exirel cyantraniliprole | 28 | G | 13.5-20.5 fl oz | 12 h | 7 d | Apply before aphid populations build. Rapid anti-feeding activity helps to limit spread of viruses, like Potato Virus Y, that spread quickly. |
| Minecto Pro abamectin, cyantraniprole | 6, 28 | G | 10 fl oz | 12 h | 14 d | Apply before aphid populations build. Rapid anti-feeding activity helps to limit spread of viruses, like Potato Virus Y, that spread quickly. The abamectin in Minecto Pro is not very effective for aphids. |
| Sivanto 200 SL flupyradifurone | 4D | E | 7-10.5 fl oz | 4 h | 7 d | Early-to-mid season application will cover several migrating pests. Apply before populations build. Rapid anti-feeding activity helps to limit spread of viruses, like Potato Virus Y, that spread quickly. Use the highest allowed rate when aphid pressure is high, foliage is dense, or with aerial application. |
| Assail 70WP acetamiprid | 4A | E | 1-1.7 oz | 12 h | 7 d | Apply when aphids are first detected. |
| Actara thiamethoxam | 4A | E | 3 oz | 12 h | 14 d | Apply when aphids are first detected. |
| Sefina afidopyropen | 9D | E | 3 fl oz | 12 h | 7 d | Apply at the first sign of aphids. Anti-feeding activity should limit spread of potato viruses. |
| Cormoran novaluron, acetamidiprid | 15, 4A | G | 9-12 fl oz | 12 h | 14 d | Apply when aphids are first detected. The novaluron in Cormoran is not very effective for aphids. |
| Aza-Direct azadirachtin | NC | F-P | 1-3.5 pt | 4 h | 0 d | Apply when aphids first appear. It may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Does not provide immediate mortality. |
| Neemix 4.5 IGR azadirachtin | NC | F-P | 5-7 fl oz | 4 h | 0 d | Apply when aphids first appear. It may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Does not provide immediate mortality. |
| PyGanic Crop Protection EC 5.0 pyrethrins | 3A | F-P | 4.5-15.61 fl oz | 12 h | 0 d | Apply when insects first appear. Don’t wait until plants are heavily infested. It may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. |
| BioCover MLT mineral oil/petroleum distillate | NC | F-P | See Label | 4 h | Apply when aphids first appear to limit spread of Potato Virus Y, or before aphids are present in large numbers if the goal is to keep aphid numbers in check and virus spread is not a concern. | |
| Trilogy neem oil | NC | F-P | See Label | 4 h | 0 d | Apply before aphids are present in large numbers if the goal is to keep aphid numbers in check and virus spread is not a concern. Apply when aphids first appear to limit virus spread, however it may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Does not provide immediate mortality. |
| Asana XL esfenvalerate | 3 | P | 5.8 to 9.6 fl oz | 12 h | 7 d | Not particularly effective for aphids. Use of pyrethroid insecticides is not recommended mid-season. If used, monitor for subsequent pest outbreaks. |
| Baythroid XL beta-cyfluthrin | 3 | P | 2.8 fl oz | 12 h | 0 d | 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. |
| Warrior II lambda-cyhalothrin | 3 | P | 1.28-1.92 fl oz | 24 h | 7 d | 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. |
| Mustang Maxx zeta-cypermethrin | 3 | P | 3.2-4.0 fl oz | 12 h | 1 d | 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. |
| Athena abamectin (avermectin) and bifenthrin | 3, 6 | P | 7 to 17 fl oz | 12 h | 21 d | Use of pyrethroid insecticides, including package mixes with other active ingredients, is not recommended mid-season. If used, apply before aphid populations build. Monitor for subsequent pest outbreaks. |
| Leverage 360 beta-cyfluthrin, imidacloprid | 3, 4 | P | 2.8 fl oz | 12 h | 7 d | Use of pyrethroid insecticides is not recommended mid-season. If used, apply before aphid populations build. Monitor for subsequent pest outbreaks. |
| Brigadier bifenthrin, imidacloprid | 3, 4A | P | 3.8-6.14 fl oz | 12 h | 21 d | Use of pyrethroid insecticides is not recommended mid-season. If used, apply before aphid populations build. Monitor for subsequent pest outbreaks. |
| Notes: Early-to-mid season application will cover aphids and some other migrating pests. Apply when aphids are migrating 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 | ||||||
|---|---|---|---|---|---|---|
| Pesticide | MOA1 | Efficacy2 | Rate per Acre3 | REI4 | PHI5 | Notes |
| Carbine 50 WG flonicamid | 29 | E | 2.0-2.8 oz | 12 h | 7 d | Apply before populations start to build, or before a systemic aphicide treatment breaks down. Rapid feeding cessation, so it is a good choice to limit spread of Potato Virus Y. |
| Fulfill pymetrozine | 9B | E | 2.75-5.5 oz | 12 h | 14 d | Apply before populations start to build, or before a systemic aphicide treatment breaks down. Rapid feeding cessation, and aphids die 3-5 days later. A good choice to limit spread of Potato Virus Y. Apply 5.5 oz/A if also targeting psyllids. |
| Exirel cyantraniliprole | 28 | G | 13.5-20.5 fl oz | 12 h | 7 d | Apply before aphid populations build. Rapid anti-feeding activity helps to limit spread of viruses, like Potato Virus Y, that spread quickly. |
| Minecto Pro abamectin, cyantraniprole | 6, 28 | G | 10 fl oz | 12 h | 14 d | Apply before aphid populations build. Rapid anti-feeding activity helps to limit spread of viruses, like Potato Virus Y, that spread quickly. The abamectin in Minecto Pro is not very effective for aphids. |
| Sivanto 200 SL flupyradifurone | 4D | E | 7-10.5 fl oz | 4 h | 7 d | Early-to-mid season application will cover several migrating pests. Apply before populations build. Rapid anti-feeding activity helps to limit spread of viruses, like Potato Virus Y, that spread quickly. Use the highest allowed rate when aphid pressure is high, foliage is dense, or with aerial application. |
| Assail 70WP acetamiprid | 4A | E | 1-1.7 oz | 12 h | 7 d | Apply when aphids are first detected. |
| Actara thiamethoxam | 4A | E | 3 oz | 12 h | 14 d | Apply when aphids are first detected. |
| Sefina afidopyropen | 9D | E | 3 fl oz | 12 h | 7 d | Apply at the first sign of aphids. Anti-feeding activity should limit spread of potato viruses. |
| Cormoran novaluron, acetamidiprid | 15, 4A | G | 9-12 fl oz | 12 h | 14 d | Apply when aphids are first detected. The novaluron in Cormoran is not very effective for aphids. |
| Aza-Direct azadirachtin | NC | F-P | 1-3.5 pt | 4 h | 0 d | Apply when aphids first appear. It may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Does not provide immediate mortality. |
| Neemix 4.5 IGR azadirachtin | NC | F-P | 5-7 fl oz | 4 h | 0 d | Apply when aphids first appear. It may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Does not provide immediate mortality. |
| PyGanic Crop Protection EC 5.0 pyrethrins | 3A | F-P | 4.5-15.61 fl oz | 12 h | 0 d | Apply when insects first appear. Don’t wait until plants are heavily infested. It may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. |
| BioCover MLT mineral oil/petroleum distillate | NC | F-P | See Label | 4 h | Apply when aphids first appear to limit spread of Potato Virus Y, or before aphids are present in large numbers if the goal is to keep aphid numbers in check and virus spread is not a concern. | |
| Trilogy neem oil | NC | F-P | See Label | 4 h | 0 d | Apply before aphids are present in large numbers if the goal is to keep aphid numbers in check and virus spread is not a concern. Apply when aphids first appear to limit virus spread, however it may work too slowly to limit spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Does not provide immediate mortality. |
| Lannate LV methomyl | 1A | E | 1.5 to 3.0 pt | 48 h | 6 d | It will knockback aphids. Lannate LV is best used late season to knockback multiple pests. |
| Asana XL esfenvalerate | 3 | F-P | 5.8 to 9.6 fl oz | 12 h | 7 d | Not particularly effective for aphids. |
| Dimethoate 400 EC dimethoate | 1B | G | 0.5-1.0 pt | 48 h | 0 d | It will knockback aphid populations. |
| Torac tolfenpyrad | 21A | G | 17-21 fl oz | 12 h | 14 d | Apply when aphids are present for knockback control with anti-feeding. |
| Leverage 360 beta-cyfluthrin, imidacloprid | 3, 4 | E-G | 2.8 fl oz | 12 h | 7 d | Apply before aphid populations build. |
| Brigadier bifenthrin, imidacloprid | 3, 4A | E | 3.8-6.14 fl oz | 12 h | 21 d | Apply before aphid populations build. |
| Transform WG sulfoxaflor | 4C | E | 24 h | 7 d | Apply when aphids are present. | |
| Athena abamectin (avermectin) and bifenthrin | 3, 6 | F-P | 12 h | 21 d | Apply before aphid populations build. Not very effective for aphids, especially compared to most other target pests. | |
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: Preplant | ||||||
|---|---|---|---|---|---|---|
| Pesticide | MOA1 | Efficacy2 | Rate per Acre3 | REI4 | PHI5 | Notes |
| Cruiser Maxx Potato Insecticide and Fungicide thiamethoxam + fludioxonil | 4A; 12 | E | See Label | 12 h | It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Apply at 0.19-0.27 fl oz/100 lb seed. | |
| Admire Pro (seed treatment) imidacloprid | 4A | E | See Label | It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Apply at 0.17-0.35 fl oz/100 lb seed. | ||
| Belay (seed treatment) clothianidin | 4A | E | See Label | It may work too slowly to prevent spread of Potato Virus Y, especially when winged (migratory) aphid numbers are high. Apply at 0.4-0.6 fl oz/100 lb seed. | ||
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.
