Heligen® for Season-Long Control of Resistant Corn Earworms (CEW)

An Effective, Economical and Long-Lasting Biological Insecticide without Harming Beneficial Insects

Heligen® is a biological insecticide that controls Helicoverpa zea (cotton bollworm, corn earworm, soybean podworm, etc.) and Heliothis virescens (tobacco budworm) larvae  which are resistant to chemical insecticides.

Corn Earworm melting on a soybean left.

Heligen® is a Novel And Highly Selective Group 31 Mode of Action Insecticide

Download the Tech Sheet per Crop
" We really like the cost effectiveness with Heligen. We have been extremely impressed with how good a job it did in all situations. We learned it was extremely important to ensure coverage, the right pH and timing of spray. That is probably what gave us such a great first run with it.”
Chris Leach, Grower, Plainview, TX
TARGETED PESTS
Helicoverpa zea - Corn earworm (CEW), Soybean Podworm
ACTIVE INGREDIENT
(A.I.): Helicoverpa armigera Nucleopolyhedrovirus
FORMULATION
Suspension Concentrate (SC)
RATE OF USE – KEY CROPS
Sorghum – 1.0 to 1.4 floz/arce
Soybean – 1.28 to 1.6 floz/acre
Peanut – 1.0 to 1.6 floz/acre
Field Corn – 1.0 to 1.6 floz/acre  GPA - Minimum 10 gal/acre
Sweet Corn – 1.2 to 2.4 fl oz/acre  GPA - Minimum 40 gal/acre
Hemp – 2.4 floz/acre  GPA - Minimum 40 gal/acre
Corn Earworm growth chart
HELIGEN® APPLICATION THRESHOLD
≤5 Small ( ≤ ½") Larvae per 25 Sweeps
Thorough crop coverage is essential, as the A.I. in Heligen® must be ingested by larvae to be effective. Heligen® is most effective when applied to small larvae at very early infestation levels.
WHAT TO EXPECT AFTER APPLICATION

Up to 3 days after application
Infected larvae continue to feed but become lethargic and move upward on the crop – thus, exposed to heat and more vulnerable to predators.

4-6 days after application
Feeding gradually stops and, often, sick are found on top of crops or hanging under the plant's canopy, being cannibalized by other CEW larvae. Larval skin bursts open, releasing billions of viral particles onto the crop. These particles are effectively dispersed by wind, rain, and many arthropods, including predators that feed on the dead larvae cadavers extending season-long control of resistant soybean podworms, corn earworms, and bollworms alike.

NOTE!
Do not use Heligen® as a curative treatment past the 4th Instar (medium-large CEW). In this situation, alternative control methods should be considered.
COMPATIBILITY
Heligen® is compatible as a tank mix partner with insecticides, fungicides and fertilizers. Ensure tank mixture solution pH is <8 prior to adding Heligen® to the tank.
CAUTION
Spray solution pH above 8 may damage the virus and reduce performance of Heligen. If needed, use a suitable buffer (acidifier).
THE APPLICATION WINDOW OF HELIGEN FOR OPTIMAL EFFECTIVENESS PER KEY CROP
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Sweet Corn

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Industrial Hemp

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Image of Heligen Gallon Container

Heligen®

Biological insecticide for the control of Helicoverpa spp. larvae

Insect Target
Helicoverpa (formerly Heliothis) insects Helicoverpa armigera and Helicoverpa punctigera larvae (common names include cotton bollworm, corn earworm and tomato fruitworm).

Registered Crops
Sweet Corn, Soybean, Sorghum, Grain Cereal (Corn (maize), popcorn, rice…), Peanuts, Vegetables, Legumes, Alfafa, Cotton, Tobacco, Hemp, Root and Tuber Vegetables, Brassica leafy Vegetables, Leafy Vegetables, Fruiting Vegetables, Legume Vegetables, Cucurbit Vegetables, Berries, Pome Fruit, Ornamental Flowers and Plants, Avocado, Asparagus.

1 Gallon

Technical Information

Scout early! Be proactive with Heligen and get an economical lasting control.
Frequently Asked Questions
What is Heligen®?
A biological insecticide that controls Helicoverpa zea (cotton bollworm, corn earworm, soybean podworm, etc.) and Heliothis virescens (tobacco budworm).

What is the Active Ingredient in Heligen®?
A Natural occurring virus called Helicoverpa NPV nucleopolyhedrovirus.

How Does Heligen® Work?
Heligen® is a suspension of virus particles called Occlusion Bodies (OB’s). When larvae ingest OB’s by eating Heligen® sprayed crops, they become infected with the virus. Using the insect’s own metabolism, the virus replicates itself and invades almost every cell of the insect – causing them to rupture. This releases a virus-laden liquid, which spreads throughout the crop, providing ongoing control of susceptible caterpillars.

What Pests Does Heligen® Control?
Corn earworm and tobacco budworm. In other crops they can be referred to as cotton bollworm, soybean podworm, sorghum headworm, and tomato fruitworm.

Does Heligen® Work on Larvae Populations that have Developed Resistance to Synthetic Insecticides?
Yes. It is a valuable rotational mixing partner in controlling larvae resistant to synthetic insecticides. There are no known cases of resistance developing to NPV-based insecticides anywhere in the world.

Is Heligen® Harmful to Beneficials?
No, Heligen® is a species-specific biological insecticide used to control Corn Earworm and Tobacco Budworm and has no impact on beneficial species. Actually, beneficial species help transmit the virus throughout the ecosystem more quickly, which can result in better coverage and control.

What are the Approved Crops for Heligen?
Crops include: Sweet Corn, Soybean, Sorghum, Grain Cereal (Corn (maize), popcorn, rice…), Peanuts, Vegetables, Legumes, Alfafa, Cotton, Tobacco, Hemp, Root and Tuber Vegetables, Brassica leafy Vegetables, Leafy Vegetables, Fruiting Vegetables, Legume Vegetables, Cucurbit Vegetables, Berries, Pome Fruit, Ornamental Flowers and Plants, Avocado, Asparagus.

What is Heligen®’s PHI or REI?
Heligen® does not have a pre-harvest interval (PHI). The re-entry interval (REI) is 4 hours.
How Much Does Heligen® Cost?
Depending on the rate, about $4 to $6 per acre.

What Should I Expect after Application?
Generally, Heligen® will provide upwards of 90% control dependent upon environmental and weather conditions. Larvae may continue feeding for 1-3 days after becoming infected with NPV and will typically die within 3-9 days. Smaller larvae die faster, and warmer temperatures will increase the speed of kill. Expect slower results when temperatures are cooler (less than 65°F). NPV-infected larvae will not show obvious symptoms of disease until 1-2 days before death.

Is Heligen® Compatible with Other Insecticides?
When mixed with water, Heligen® is highly compatible with the majority of insecticides and fertilizers. Ensure that the mixture has a pH of 8 or less before adding Heligen as alkalinity will damage the virus.

How Should Heligen® be Stored?
Ideally, Heligen® should be stored at temperatures below 34°F, however, it can be stored at room temperature (77°F or less) for up to 6 months and should never be kept in an environment above 86°F. Do NOT leave in direct sunlight for longer than 2 hours or in spray tank for extended periods of time. Unused product can be stored in the original container for future use.

Does Heligen® Have Any Residual Activity?
The virus in Heligen® is degraded by ultraviolet light. As a result, the sprayed virus may only be viable for a few days in the crop. However, once the initial population dies, huge quantities of virus will be released. This replicated virus will last for many weeks and will control recurring populations. Applying the virus while larvae are most active (feeding) increases the likelihood of ingesting and ultimately higher levels of control.

How Do I Know If I Have Corn Earworm or Budworm in My Crop?Look for four prolegs, black spines, orange head capsule, and variable colors. Four pair of prolegs distinguish them from green cloverworms (3 pairs) and loopers (2 pairs). Fall armyworms have an inverted “Y” on their head capsule. They also have 4 black dots on their last abdominal segment