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SDSU Extension to host Wheat Walks in June
May 13, 2021
The 2021 Wheat Walks are slated for June 2 and 3 and will be held near Pierre, Clark and Mount Vernon.
Alfalfa Weevil Activity Prediction Update: May 13, 2021
Although last week was warmer, we still didn’t accumulate a lot of degree days for alfalfa weevils. However, the upcoming forecast looks more favorable for alfalfa growth and alfalfa weevil development.
Common Stalk Borer Activity Estimate: May 13, 2021
The upcoming weather forecast looks warmer than the last few weeks, and that means we will begin to accumulate degree days for the common stalk borer at an increased rate.
Alfalfa Weevils Are Active, and It’s Time to Scout
Scouting and managing alfalfa weevils when they reach the determined thresholds can prevent yield loss and encourage healthy regrowth of infested alfalfa stands.
Small Aphid Populations Observed in Wheat
This week we received the first report of aphids in wheat for the 2021 season. The populations won’t be increasing rapidly until the daily temperatures warm up, but it is still a good idea to scout fields and determine if aphids are present.
Watch Closely for Weed Emergence
Cool, dry conditions have slowed weed emergence and growth, but dry conditions also have limited the activation of preemergent chemicals. Given this scenario, fields need to be scouted closely to ensure that weeds do not get away.
Alfalfa Weevil Activity Prediction Update: May 20, 2021
This week we accumulated degree days for alfalfa weevils at a rapid rate. As a result, we observed many areas of the state potentially move through more than one larval life stage.
Common Stalk Borer Activity Estimate: May 20, 2021
Warmer weather is finally here. Although we have accumulated quite a few degree days for common stalk borers, nowhere in the state has reached accumulation levels for common stalk borer caterpillar movement into corn fields.
Cabbage White Butterflies Are Here!
Keep an eye out for cabbage white butterflies in your garden. These butterflies lay eggs on the underside of the vegetable leaves. Once the eggs hatch, their caterpillars feed on cabbage, broccoli, Brussel sprouts, cauliflower, kale, turnips and radishes.
Seedcorn Maggot Degree Day Activity Estimates: May 20, 2021
Seedcorn maggots can be an early-season pest of corn and soybean in South Dakota, typically affecting crops that are emerging or have recently emerged. Seedcorn maggots can cause direct loss by destroying planted seeds.