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Zonitis Bilineata on Sunflowers
While scouting sunflower last week we noticed beetles that were present throughout the field on the developing buds. These beetles weren’t feeding on the buds or the bracts that they were often on. So, what were they doing on the sunflowers?
Gray Sunflower Seed Weevils
Gray sunflower seed weevils have been spotted in sunflower fields this week. Although they are a non-economic pest there are times when they can have population outbreaks and reduce sunflower yields.
Poisonous Plants on Rangelands: Hemlock, Halogeton and Buffalo Bur
Several species of poisonous plants are invasive and can easily establish dense stands when there is a disturbance on rangelands. Hemlocks, halogeton and buffalo bur can all be found throughout South Dakota and are toxic to livestock.
Controlling Grasshoppers, Salvaging Drought Corn Kick Off August Drought Hours
August 04, 2021
According to the latest U.S. Drought Monitor, nearly 18% of the state is in Extreme Drought (D3), while another 70% follows as Severe Drought (D2).
Saturated Buffer Situations
What is a saturated buffer and how can they be beneficial to farmers?
Use Caution With Turf Herbicide Applications During Extreme Heat and Drought
Dry conditions cause weeds to be under stress. This decreases herbicide effectiveness with annual, biannual and perennial plants. So, is there a safe option for weed control in yards during high temperatures and dry conditions?
SDSU Extension to Provide Drought Resources, Water and Forage Testing at Dakotafest
August 05, 2021
South Dakota State University Extension invites crop and livestock producers to its new booth location, #216, at the 2021 Dakotafest in Mitchell, South Dakota.
Snailcase Bagworms in South Dakota
A unique insect that has been observed in South Dakota is the snailcase bagworm. Snailcase bagworms are wingless moths that spend their entire life in spiral-shaped “snail” cases, which they build around themselves using a combination of silk, soil particles and fecal matter.
Two-Spotted Spider Mite Populations Reaching Threshold
Drought conditions have continued and worsened in much of South Dakota during this season. As a result, two-spotted spider mite populations have been present in most fields and have recently had large population growth in soybean fields throughout the state.
Red Sunflower Seed Weevils Are Active
Red sunflower seed weevils are active in South Dakota sunflowers. We noticed that many fields at R5 stages are already being sprayed, but scouting should still continue in those fields after application, and it should begin for fields that will reach the R5 stage within the next week.