University of
Nebraska
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of Entomology

Insecticides for Greenbug Control in Sorghum

Updated January 26, 2009

Planting-Time Treatments

Post Emergence Treatments

Economic Thresholds:

Seedling (0-5 leaves)Treat if greenbug colonies are present on 10-20 percent of plants, and visible yellowing or spotting on leaves is present.
Plants 6 inches tall to bootTreat if greenbug colonies are beginning to cause red or yellow leaf spotting on lower leaves of most plants AND parasite numbers are low (less than 20 percent of greenbugs parasitized).
Boot to headingTreat if greenbug colonies are present on most plants, and have killed one lower leaf,and if parasite numbers are low (less than 20 percent of greenbugs parasitized).
Heading to hard doughTreat if greenbug colonies are present on most plants and have killed two normal-sized leaves, and if parasite numbers are low (less than 20 percent of greenbugs are parasitized.)

For information on biology and management of greenbugs, consult NebGuide G87-838, Management of Greenbugs in Sorghum.

This list is not inclusive. See http://www.greenbook.net or other resources for additional registrations.
This information is presented in abbreviated form. Be sure to consult the label for additional information and restrictions.

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IRAC Mode of Action Classification:
  • Group 1 = Acetylcholine esterase inhibitors; 1A = Carbamates, 1B = Organophosphates
  • Group 3 = Sodium channel modulators
  • Group 4 = Nicotinic acetylcholine receptor agonists/antagonists; 4A = Neonicotinoids
R = Restricted-Use Product

At Planting

Mode of
Action
Product
Name
Common
Name
Rate
(Formulation)
Restrictions/Comments

1B R Counter 15G
Banded Applications
terbufos 7 oz/1000 row ft Place granules in a 5 to 7 inch band directly behind the planter shoe in front of the press wheel and incorporate lightly. Use only 1 application per year.
1B R Counter 15G
Knifed-In Applications
terbufos 7 oz/1000 row ft Drill granules 1 to 4 inches directly below the seed or 1 to 4 inches below and up to 5 inches to the side of the seed. PHI is 50 days for forage and 100 days for fodder or grain.
4A Cruiser (Adage) 5FS
seed treatment
thiamethoxam 5.1 fl oz/cwt of seed Purchase treated seed from seed dealers. There is a 120 day plant-back interval for soybeans and corn.
1A R Furadan 4 F
("24-C")
carbofuran 2.5 oz/1000 row ft Apply directly into seed furrow using 7-20 gallons per acre spray volume. Do no graze or harvest forage or silage within 75 days of planting.
4A Gaucho
seed treatment
imidacloprid 8.0 oz/cwt of seed Purchase treated seed from seed dealers. There is a 30 day plant-back interval for soybeans and corn.
4A Poncho 600 clothianidin 5.1 to 6.4 fl oz/cwt of seed  
1B R Thimet 20 G phorate 6 oz/1000 row ft Place granules in a 7-inch band over the row at planting and incorporate into the soil. Do not apply directly on the seed.

Post-Emergence

Mode of
Action
Product
Name
Common
Name
Rate
(Formulation)
Restrictions/Comments

1B, 3 R Cobalt chlorpyrifos and
gamma-cyhalothrin
13 - 38 fl oz/acre Use a higher labelled rate when greenbug populations are high. Do not apply to drought stressed sorghum within 3 days following irrigation or rain, except when applied in irrigation water.
1B Dimethoate 4 EC,
Dimate 4EC
dimethoate 0.5 - 1.0 pt/acre Apply in 25-40 gallons of water per acre for ground application and in one or more gallons if applied by air. May apply up to 3 applications per year but do not apply after heading.
1A R Furadan 4 F
("24-C")
carbofuran 0.5 - 1.0 pt/acre Apply in sufficient water to obtain thorough coverage. Do not make more than 2 foliar applications per season or apply after heads emerge. Do not graze treated fields or cut for silage or forage within 30 days following treatment.
1B R Lorsban 4 E
(numerous products)
chlorpyrifos 0.5 - 1.0 pt/acre Apply in sufficient water to obtain thorough coverage. Do not apply more than 3 pints of Lorsban per acre in one season. Treated crop cannot be used for grain, forage, fodder, hay or silage within 30 days after treated with one pint per acre or for 60 days for applications of more than one pint per acre.
1B Malathion 57 EC malathion 1.5 pts/acre Apply in sufficient water to obtain thorough coverage and repeat application if needed.

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