The alfalfa weevil is a major spring insect pest of South Dakota alfalfa. Before 2018, this insect was reported as having large populations throughout much of South Dakota. However, during 2018 and 2019, we received fewer reports of alfalfa weevils, which may have been a result of the cooler and wetter spring conditions that were observed.
During the last week, the colder weather that we experienced across South Dakota resulted in very little degree day accumulation. However, in some areas enough degree days have accumulated to potentially lead to adult activity within alfalfa fields.
The arrival of spring in South Dakota means warmer weather and more outdoor activities. However, it also brings an increase in tick activity.
August 10, 2020
One of the latest issues to result from the COVID-19 pandemic is the changes in the distillers grain marketplace.
It is finally warming up across much of South Dakota and that means the degree days are beginning to accumulate more rapidly. Alfalfa weevil activity is likely in areas around Rapid City, Hot Springs, Cottonwood, Mission, Pierre, Winner and Vermillion.
Although bean leaf beetles won’t be emerging for a while yet, it is important to be prepared for potential early season defoliation. Once soybean are planted and begin emerging, the overwintering population of bean leaf beetle adults will move into soybean fields and begin feeding on the seedlings.
Spring green-up is the time to be watching for black grass bug activity. Large populations of this early-season pest can cause severe damage to pasture (up to 90% forage reduction) and infest the edges of wheat fields.
COVID-19 and the energy economy has had a dramatic negative impact on the ethanol industry, resulting in limited availability of corn distiller’s grains. This has changed availability and pricing of protein feeds.
Fact sheet about insecticide treatment options for protecting ash trees against emerald ash borer.
In abnormal situations, like with the packing plant closure we’re currently dealing with, pork producers may need to “hold” their pigs past normal marketing dates in order for other processing options to open up. We can accomplish that in two ways: altering internal barn environment and changing diets.