The following was released by Kerry Siders, EA-IPM Hockley, Cochran, Lamb.
SUGARCANE APHIDS FOUND IN NORTHERN LAMB COUNTY
I was just contacted by Danny Quisenberry, long-time crop consultant, that he had located sugarcane aphids 4 miles north of Earth, in northern Lamb County. This is on some older grain sorghum, the SCA numbers were not at a treatable level as of yet.
Pre-boot: 20% of plants with aphids
Boot: 20% of plants infested with 50 aphids per leaf.
Flowering to Milk: 30% of plants infested with 50 aphids per leaf.
Soft dough through dough: 30% of plants infested
*Do not let them get too numerous before treating*
Maximize spray coverage best you can - spray AT LEAST 10 GPA by ground and 5 GPA by air; *Spray by ground if possible*
As of today, July 9, 2018, we have not found any sugarcane aphids in Hale, Swisher, or Floyd, nor do we have any reports of the aphid yet. We do have sorghum in our scouting program very near this reported sighting. It is very possible this is an overwintering population establishing in sorghum near Johnson grass where they emerged, or originally migrated to earlier. We will keep an eye on the situation.