This season, sugarcane aphid was first spotted close to the same time as last year. Generally, populations were slow to build, but this year a number of growers were prepared to treat with Sivanto Prime, which is available through an emergency exemption Section 18.
The results using this insecticide have been very good, but growers still need to continue to monitor for sugarcane aphid on a weekly basis.
Growers using Sivanto Prime on sweet sorghum are reminded that they need to:
- Have a copy of the section 18 label in their possession
- Be a KDA-certified pesticide applicator
- Report acreage treatment to me or the Kentucky Department of Agriculture (KDA). The KDA needs to report the number of applications and total acreage treated to the Environmental Protection Agency (EPA) in order for Kentucky to continue to qualify for the section 18.
The action threshold recommended on sweet sorghum is: 25% of the leaves have over 50 aphids. Fifty aphids can cover an area less than the size of a dime.