Keep Scouting for Insects
As sunflower fields begin to bloom, adults of red sunflower seed weevil (RSSW) will be emerging and will fly to the nearest flowering sunflowers. Trap catches for banded sunflower moth (BSM) and Arthuri sunflower moths (SM) have increased in the last week and are at economic thresholds for control in some locations. Severe infestations of RSSW and moths can be very damaging to the sunflower head and result in seed loss. Once the decision to treat has been made, it is critical to time the spray application correctly to get effective management of all sunflower head insects including RSSW, BSM, SM, and Lygus bug. The best sunflower plant stage to treat is when the majority of plants are in the R5.1 growth stage. To read more about scouting for insects and the best treatments, click here. And to see the insecticides registered in sunflower, click here.