Why Use Heligen® on Sorghum?
The new, safe and effective option
for controlling corn earworm
One application in sorghum at early flowering provides season-long control from corn earworm, since the virus replicates and spreads from dying larvae in the field.
Why use Heligen®?
Corn Earworm can be managed effectively with a single, well-timed Heligen® application during flowering, providing a high level of control through to harvest.
Minimize Grain Loss
Early sprays targeting small larvae and sub-threshold pest populations ensure minimal grain loss by controlling before they reach late instars, where 80% of damage occurs.
Reduced Input Cost
Using Heligen® in this way reduces grain loss and the need to spray multiple times, resulting in savings to the grower and increased profit potential.
NPV Control Progression Timeline
1-2 Days After Application
Feeding may continue, but at a reduced rate after infection.
4-6 Days After Application
Larvae will become discolored and slow-moving.
Upon death, large amounts of virus is released back into the crop, which serves as the source for secondary infection. As healthy larvae feed on the virus-laden crop, ongoing corn earworm control can last from weeks to months after the initial spray.
Preparing To Spray
Keys to maximizing results
Ground Rig: Minimum of 10 gallons per acre
Aerial Application: Minimum of 3 gallons per acre
1/4 inch or less: 0.7 oz per acre or 1 gallon per 183 acres
Up to 1/2 inch: 1.4 oz per acre or 1 gallon per 91 acres
Heligen® is packaged in 2 x 1 gallon case
Spray Solution pH
NPV can be degraded rapidly by high (alkaline) pH.
pH levels above 8.5 will damage the virus, which means reduced or no control.
If the spray mixture pH is above 8.0, a buffer or acidifier should be added.
Ideal Application Timing
When checking for midge during early flowering, also look for headworm larvae inside the heads. Midge sprays during this period are an ideal time to tank-mix a low rate of Heligen®.
One Heligen® application at 50% flowering will provide headworm control to harvest.