Tobacco Insect Scouting Report, May 29 2015

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— Written By Jeremy Slone and last updated by Hannah Burrack
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Burrower Bug

Burrower bug, not a pest of tobacco. Photo: Jeremy Slone

This is the fourth week of scouting, and although flea beetle pressure remains low, we are seeing other insects, including thrips at all of our sites. Thrips are largely a pest because they vector Tomato Spotted Wilt Virus while feeding on young plants. The distribution of TSWV varies by county and preventative treatments may only be necessary if the viral load is annually higher in a given region. See this post from last year for more details on why treating thrips with foliar insecticides is generally not recommended in tobacco.

In addition to thrips, we are also seeing several other insects which are actually not pests at all. We have observed burrower bugs (pictured above), pygmy grasshoppers, and some mottled tortoise beetles, but none of these are pests of concern in tobacco. Insects such as lady beetles and stilt bugs are actually predatory and help control eggs and larvae.

Although a grower may want to spray to control any insects that are present and abundant in the field, in some instances it may be both costly and unnecessary. We did see our first budworm this week in our research plots at the Upper Coastal Plains Research Station in Rocky Mount. We saw signs of both budworms and hornworms in some of our Eastern sites, and some larvae that were quite large. Yet even though budworm or hornworm larvae may be present, it is only recommended that you treat when they reach 10% infestation in the field. This may actually reduce the frequency of necessary foliar applications while providing effective control. For more information, view our recent post on budworms.

Eastern 1

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
0.0 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

Scouting Report, Eastern 1 – 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
0.1 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

Eastern 2

Scouting Report, Eastern 2 – 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
0.0 flea beetles/plant– No treatment
1.4% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

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
0.10 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

Eastern 3

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 – No treatment
0.02 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

Scouting Report, Eastern 3 – 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
0.04 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

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Piedmont 1

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 – No treatment
0.02 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

Scouting Report, Piedmont 1 – 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
0.37 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

Piedmont 2

Scouting Report, Piedmont 2 – 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
0.02 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

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
0.0 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

Piedmont 3

Scouting Report, Piedmont 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 – No treatment
0.02 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

Scouting Report, Piedmont 3 – 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
0.0 flea beetles/plant– No treatment
0% budworm infested plants – No treatment 
0 – No treatment
0 – No treatment
 

More information

Tobacco insect scouting methods – Tobacco Growers Information Portal

Previous scouting reports – Tobacco Growers Information Portal

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Updated on Jan 14, 2016
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