Tobacco Insect Scouting Report. June 12, 2014

— Written By tcmclamb and last updated by
Tobacco at the Eastern 4 location. Phjoto: Cameron McLamb

Tobacco at the Eastern 4 location. Photo: Cameron McLamb

It is our seventh week of scouting at our IPM and grower standard fields. The tobacco plants are looking healthy, given substantial sunshine and rain over the past week. Budworms have started showing up in greater numbers, and flea beetles numbers have started to decline at most locations. Tomato spotted wilt virus infections have started developing in greater number of plants, but they are still at low levels in all of our fields.

Here is the week seven scouting report for our commercial fields:

Scouting Report , Eastern 1 – Grower Standard Field

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
0.02 beetles/plant – No treatment
0 – No treatment
0 – No treatment
0 – No treatment
2.6 thrips/plant
 
4% of plants infected with Tomato spotted wilt virus

Scouting Report, Eastern 2 – IPM Field

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
2% budworm infested plants – No treatment
0 – No treatment
0 – No Treatment
2.9 thrips/plant
6% of plants infected with TSWV
 

Scouting Report , Eastern 3 – Grower Standard Field

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
0.15 beetles/plant – No treatment
0 – No treatment
0 – No treatment
0 – No treatment
26.9 thrips/plant

Scouting Report, Eastern 4 – IPM Field

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
0.18 beetles/plant – No treatment
3% budworm infested plants – No treatment
0 – No treatment
0 – No Treatment
42 thrips/plant

Scouting Report , Piedmont 1 – Grower Standard Field

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
0.10 beetles/plant – No treatment
0 – No treatment
0 – No treatment
0 – No treatment
3.2 thrips/plant

Scouting Report, Piedmont 2 – IPM Field

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
0.02 beetles/plant – No treatment
0 – No treatment
0 – No treatment
0 – No Treatment
2.3 thrips/plant

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? 0 – No Treatment 0.03 beetles/plant – No treatment 5% 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 0.09 beetles/plant – No treatment 3% budworm infested plants – No treatment 0 – No treatment 0 – No Treatment 3% 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 0.25 beetles/plant – No treatment 0 – No treatment 0 – No treatment 0 – No Treatment 0 – No treatment

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 1% budworm infested plants – No treatment 0 – No treatment 0 – No Treatment 0 – No treatment

Notes: We have started seeing higher numbers of budworms at our locations, but none are near the threshold where treatment is recommended. Weather could have an effect on pest numbers due to some heavy rainfall over the past week.

More information

For last weeks scouting report, click here.

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