Natural technology that offers season-long protection from corn earworm damage for profit driven soybean production:

Features and Benefits

Feature Benefit
Naturally occurring biological insecticide

Safe for people, animals and the environment

Self replicating

Season long control

Novel mode of action

Control caterpillars resistant to chemicals

Highly specific to Helicoverpa and Heliothis

No impact on beneficial species

Targeted control of Helicoverpa and Heliothis

Ideal for Integrated Pest Management

No residuesNil withholding period
High concentration formulation

Low application rates and reduced storage requirements

Versatile application options

Can be applied by ground, air or chemigation

Rainfall enhances performance

No need to delay application if rain was expected

What is Heligen and how does it work?

Technical information


Jason Hamlin
Jason Hamlin Owner North Delta Crop Consulting

"We had continual corn earworm pressure and a second generation developed in the untreated block. Three weeks after application, I observed six 3rd - 5th instars/25 sweeps in the untreated block but none in the Heligen treated fields".

“Getting comfortable with how the virus works has been a learning curve. 4-6 days after application, I tend to catch more worms because they are infected with the virus and come to the top of the canopy. Those worms are clearly infected with the virus and are no longer feeding normally”.

"I continue to flare bean leaf beetles with my normal pyrethroid and diamide applications. I will use more Heligen in the future to combat this problem".  

Dr Sebe Brown
Dr Sebe Brown LSU AgCenter Extension Entomologist

“Heligen is not like other insecticides, this potent biological insecticide is derived from a naturally occurring baculovirus that is specific to bollworm and budworm.” 

"Heligen's speed of kill is similar to insect growth regulators (IGR), often taking a few days before a significant reduction in larvae occurs. After infection, larvae will begin to migrate to the top of the plant canopy making it appear that more larvae have developed in the same field. However, this is an indication of advanced infection and those larvae will ultimately die".

Hank Jones
Hank Jones RHJ Ag Services

“We applied Heligen to 2nd-3rd instars to a population of 4/25 sweeps compared to Belt. At seven days after application, we were averaging 3/25 sweeps with Heligen but they were all sick and still in the 2nd-3rd instar stage. This is how the virus works; it infects the larvae, they soon quit feeding and thus do not grow. By our 13 day evaluation, all larvae were gone and it remained that way. Pod damage ratings showed no damage for either treatment and there was no advantage to applying Belt over Heligen”.

“Heligen offers consultants a new option for controlling corn earworms in soybeans. Having a virus to add to our insecticide rotation will be crucial in preserving the chemistries we are currently using. Not only is Heligen IPM friendly, it is also economical compared to other options”.

"I like to time applications of Heligen to small worms at half threshold; that seems to be the right way to do this".

Ashley Peters
Ashley Peters Peters Crop Consulting & President of LACA

“By 30 days after application, corn earworm in the standard block (pyrethroid + acephate) was rebounding to 5/25 sweeps, whereas the Heligen block had zero”.

“As growers are having to deal with resistant weed, disease and insect pests in their crops, it is always nice to have another tool to battle that resistance. In the case of corn earworm in soybean, Heligen gives us that ability. We see improved control over pyrethroids and it’s much more economical than some of the other control options. We can use Heligen early season before corn earworm populations build significantly and save our diamide chemistry for late season applications targeting soybean loopers”.


  • Excellent spray coverage critical to achieve good results
  • Larvae must ingest the virus to become infected
  • Apply during warm conditions (77-95°F) when larvae are actively feeding
  • Peak control at 4 to 9 days after application (faster in warm conditions)
  • Provides between 60 to 90% control depending on coverage, environmental conditions and size of larvae