Agriculture & Natural Resources
Sivanto Prime available on sweet sorghum for 2018
Source: Dr. Ric Bessin, UK Extension Entomologist
The Kentucky Department of Agriculture (KDA) just announced that Kentucky will again have Sivanto Prime available for use on sweet sorghum to fight sugarcane aphid. This is good news, as this insecticide is so effective and the sugarcane aphid is so damaging to this crop.
This marks the third year that the emergency use of this material has been secured for Kentucky.
Last year, sugarcane aphid was found over the entire state for the first time; however, each year this insect must recolonize the state from southern overwintering areas. There will be an announcement if and when it is detected in Kentucky in 2018. Sivanto Prime is used as a rescue treatment when sugarcane aphid reaches an average of 50 or more aphids on 25 to 30 percent of the leaves. In order for a producer to use Sivanto Prime on sweet sorghum, they need to have a copy of the section 18 label in their possession, be a certified applicator (either private or commercial), and report the acreage treated to help ensure we will be eligible to obtain these exemptions in the future. Reports can be made to the Woodford County Extension Service, Dr. Ric Bessin, or the Kentucky Dept. of Agriculture. With this label, a producer may make up to four applications per year. The lower rate is four fluid ounces per acre, which was reduced from last year, and the maximum rate is 10.5 fluid ounces. The maximum for the entire year may not exceed 28 fluid ounces per acre.
There needs to be at least seven days between applications and at least 21 days from the last application until harvest.