Tobacco Insect Scouting Report. August 29, 2014

— Written By and last updated by
Tobacco from our Piedmont site has grown noticeably over the past few weeks.

Tobacco from our Piedmont site has grown noticeably over the past few weeks.

We are at week eighteen of scouting.  Two of our eastern sites are almost done with harvesting, while harvesting continues at our other locations. None of our grower plots have hornworms or flea beetles above threshold, and hornworm pressure has definitely declined in our untreated on-station plots.  Our Eastern 3 and 4 locations have low levels of aphid infested plants.  At Eastern 4, 70% rates of parasitism were observed with only one plant having more than 50 healthy aphids per leaf.

Scouting Report, Eastern 1 – Grower Standard Field

Insect observation No. aphid infested plants Flea beetles  per plant Percent tobacco budworm infested plants Hornworms per plant Percent cutworm damaged plants Other insects
Treatment needed?
0 – No treatment
1.98 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
0.22 stilt bugs/plant
0.04 lady beetles/plant

Scouting Report, Eastern 2 – IPM Field

Insect observation No. aphid infested plants Flea beetles per plant Percent tobacco budworm  infested plants Hornworms per plant Percent cutworm damaged plants Other insects
Treatment needed?
0 – No Treatment
4.82 flea beetles/plant – No treatment
0% tobacco budworm infested plants  – No treatment 
0  – No treatment
0 – No Treatment
0.18 stilt bugs/plant
0.02 stink bugs/plant

Scouting Report , Eastern 3 – Grower Standard Field

Insect observation No. aphid infested plants Flea beetles per plant Percent tobacco budworm infested plants Hornworms per plant Percent cutworm damaged plants Other insects
Treatment needed?
0.025 – No treatment
4.05 flea beetles/plant – No treatment
0% tobacco budworm infested plants – No treatment
0 – No treatment
0 – No treatment
 0.025 lady beetles/plant
0.025 parasitized budworms/plant

Scouting Report, Eastern 4 – IPM Field

Insect observation No. aphid infested plants Flea beetles per plant Percent tobacco budworm  infested plants Hornworms per plant Percent cutworm damaged plants Other insects
Treatment needed?
0.025 – No Treatment
2.75 flea beetles/ plant– No treatment
0% tobacco budworm infested plants – No treatment 
0 – No treatment
0 – No Treatment
0.15 stilt bugs/plant 
0.025 lady beetle/plant
 

Scouting Report Piedmont 1 – Grower Standard Field

Insect observation No. aphid infested plants Flea beetles per plant Percent tobacco budworm infested plants Hornworms per plant Percent cutworm damaged plants Other insects
Treatment needed?
0 aphid infested plants – No treatment
0.775 flea beetles/plant – No treatment
0% tobacco budworm infested plants – No treatment
0 – No treatment
0 – No treatment
0

Scouting Report, Piedmont 2 – IPM Field

Insect observation No. aphid infested plants Flea beetles per plant Percent tobacco budworm  infested plants Hornworms per plant Percent cutworm damaged plants Other insects
Treatment needed?
0 – No Treatment
2.34 flea beetles/plant– No treatment
0% tobacco budworm infested plants – No treatment
0 – No treatment
0 – No Treatment
0.16  stilt bugs/plant
0.02 stink bugs/plant
0.04 lady beetles/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% aphid infested plants – No Treatment 0 beetles/plant – No treatment 0% budworm infested plants – No treatment 0 hornworms/ plant – No treatment 0 – No Treatment 0.015 parasitised hornworms/plant

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 0% budworm infested plants – No treatment 0 hornworms/plant – No treatment 0 – No Treatment 0 parasitised hornworms/plant

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? 0.015 aphid infested plants – No Treatment 0 beetles/plant – No treatment 0.005% budworm infested plants – No treatment 0.045 hornworms/plant – No treatment 0 – No Treatment 0.2 parasitised hornworms/plant

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 0.005% budworm infested plants – No treatment 0.02 hornworms/plant – No treatment 0 – No Treatment 0.055 parasitised hornworms/plant

More Information:

To see last weeks scouting report, click here.

Written By

Tiffany ToennissonResearch Associate (919) 515-2746 (Office) tatoenni@ncsu.eduEntomology and Plant Pathology - NC State University
Updated on Jan 14, 2016
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