In this publication, we provide information on the identification, life cycle, damage and pest management strategies for the insect pests of sunflowers in the northern Great Plains of the United States and southern Canada.Sunflowers can be a high-risk crop because of potential losses from diseases, insects, birds and weeds.
Recognizing which species are pests and which are beneficial is important.
Economic loss results when pest numbers increase to a point where they cause crop losses that are greater than or equal to the cost of controlling the pest.
An economic injury level (EIL) is defined as the minimum pest density that will cause economic damage.
Fewer ETs have been established for non-economical pests, such as sunflower root weevil or sunflower bud moth.
The ET varies significantly among different pest species.