Insecticide applications are not recommended for the control of lygus bugs after crop stage 5.2. Insecticide use has not been warranted for control of painted lady larvae in sunflower. Severe leaf damage may occur to plants in the 2 to 6 leaf stage when adults are numerous, and on growing plants throughout the season when larvae are numerous. Sunflower Maggots Crop Threshold Notes Sunflower None established. Sunflower Midge Crop Threshold Notes Sunflower Destruction of seeds and distortion of heads can cause serious losses in fields in the Red River Valley of Manitoba.
Losses are more severe around field edges.
Reinfestation of the field may occur in areas with a high weevil population. The user of this information agrees to the terms and conditions in the copyright and disclaimer . Her Majesty the Queen in the Right of Alberta. All rights reserved.