Low temperatures during the early morning hours of May 9–11, 2020 may have had detrimental effects on winter wheat in some areas of South Dakota. However, cooler spring temperatures that have slowed the winter wheat development this year may have actually been beneficial to S.D. producers, as later-maturing wheat is not as susceptible to injury from freezing temperatures.
This is your unbiased, research-based guide to soybean production to help increase yield, reduce input costs and protect your investment.
Factsheet about Soybean Cyst Nematode history, biology and management in South Dakota
While research has shown that pollinators, specifically honey bees, can’t survive on dandelion pollen alone, this doesn’t mean that the dandelions aren’t still important for pollinators.
Tan spot and powdery mildew as well as barley yellow dwarf were found developing at low levels in winter wheat fields scouted the week of May 24, 2020.
Smut is a fungal disease that can attack the leaves, stalks, tassels, silks and cobs. While many fungal diseases cause spots on the leaves or stems, smut is much more flamboyant.
Activity of alfalfa weevils has been documented in many areas of South Dakota during the last week. At this time, the entire state has accumulated enough degree days for alfalfa weevils to be active.
The 2018 and 2019 alfalfa weevil populations were relatively low, and as a result, we didn’t receive very many calls regarding this pest during those years. However, 2020 has been quite a bit different, and alfalfa weevil populations seem to be much higher.
Winter wheat is starting to flower. It is important to monitor weather conditions from when wheat is heading until flowering to decide the need for fungicide application to manage Fusarium head blight.
Of all of the potential early season pests, the seedcorn maggot is rarely an issue in South Dakota. However, we have started receiving reports of soybean fields that have poor emergence or seedling stand reductions occurring.