Tobacco Insect Scouting Report. July 9, 2014
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Photo: Cameron McLamb
It is week eleven for our weekly scouting reports. Budworm pressure is relatively similar to last week. With most sites planning to top within the next week or two, we expected to see the budworm pressure decrease.
None of our on-farm sites were over threshold for any insects this week, although we have seen some surprising numbers of parasitized budworms in the Piedmont.
Scouting Report, Eastern 1 – Grower Standard Field
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infested plants | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0 beetles/plant – No treatment | 0 – No treatment | 0 – No treatment | 0 – No treatment | None observed |
Scouting Report, Eastern 2 – IPM Field
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infested plants | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No Treatment | 0 beetles/plant – No treatment | 2% tobacco budworm infested plants – No treatment | 0 hornworms/plant – No treatment | 0 – No Treatment | None Observed |
Scouting Report , Eastern 3 – Grower Standard Field
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infested plants | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0 beetles/plant – No treatment | 5% tobacco budworm budworm infested plants – No treatment | 0 – No treatment | 0 – No treatment | None observed |
Scouting Report, Eastern 4 – IPM Field
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infested plants | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No Treatment | 0.05 beetles/plant – No treatment | 8% tobacco budworm infested plants – No treatment | 0 hornworms/plant – No treatment | 0 – No Treatment | None observed |
Scouting Report Piedmont 1 – Grower Standard Field
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infested plants | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No treatment | 0 – No treatment | 8% tobacco budworm infested plants – No treatment | 0 – No treatment | 0 – No treatment | 20% of plants observed had parasitized tobacco budworms |
Scouting Report, Piedmont 2 – IPM Field
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infested plants | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No Treatment | 0 – No treatment | 8% tobacco budworm infested plants – No treatment | 0 – No treatment | 0 – No Treatment | 12% of plants observed had parasitized tobacco budworms |
Here are the scouting reports from the control plots for our experiments at the Upper Coastal Plain Research Station near Rocky Mount, NC and the Lower Coastal Plain Research Station near Kinston, NC. For some of these experiments, the control plots receive no insecticide treatments for the entire season. For some of the experiments, we are interested in only caterpillar pests so all plants in the experiment, including the control plots, are treated in the greenhouse with imidacloprid to prevent other early season pests.
On Station, Kinston – Control plants with no insecticide treatment
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infestation | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 9% aphid infested plants – No Treatment | 0 beetles/plant – No treatment | 28% budworm infested plants – No treatment** | 0 – No treatment | 0 – No Treatment | 4% of plants infected with Tomato spotted wilt virus |
On Station, Kinston – Control plants treated with imidacloprid
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infestation | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No Treatment | 0 beetles/plant – No treatment | 66% budworm infested plants – No treatment** | 0 – No treatment | 0 – No Treatment | 4% of plants infected with TSWV |
On Station, Rocky Mount – Control plants with no insecticide treatment
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infestation | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No Treatment | 0 beetles/plant – No treatment | 8% budworm infested plants – No treatment | 0% Hornworm infested plants – No treatment | 0 – No Treatment | 1% of plants infected with TSWV |
On Station, Rocky Mount – Control plants treated with imidacloprid
| Insect observation | No. aphid infested plants | Flea beetles/plant | Percent tobacco budworm infestation | Hornworms/plant | Percent cutworm damaged plants | Other insects |
| Treatment needed? | 0 – No Treatment | 0 – No treatment | 15% budworm infested plants – No treatment | 1% Hornworm infested plants – No treatment | 0 – No Treatment | 1% plants found with parasitized budworms |
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