Written collaboratively by: Jonathan Kleinjan, Christopher Graham, Karl Glover, Sunish Sehgal, Shaukat Ali, Kevin Kirby, Shawn Hawks, Bruce Swan, and Christopher Nelson
Crop performance testing results are released annually through the activities of SDSU Extension and the South Dakota Agricultural Experiment Station at SDSU.
View archived reports including data from 2003 - 2017 (when available) in the SDSU Extension Publications Archive.
Potato leafhoppers are a migratory pest that commonly impact alfalfa fields throughout South Dakota. Feeding injury caused by potato leafhoppers resembles drought stress and, if left untreated, can reduce both yield and forage quality.
Banded sunflower moths are active in South Dakota, which means it is time to start scouting sunflowers for their eggs. Banded sunflower moth caterpillars can reduce yields and oil content by feeding on the developing florets and tunneling into developing seeds.
When scouting sunflower, the most observed weevil is the red sunflower seed weevil. However, there are two species of seed weevils that can be present on sunflower heads in South Dakota.