Skip to main content

Search

Color-coded map of South Dakota indicating the fiftieth percentile, for first fall occurrence of 32 degrees Fahrenheit. For assistance reading this graphic and data set, please call SDSU Extension at 605-688-4792.

First Fall Frost Dates

The first fall frost often marks the end of the growing season, and many garden plants may not survive the freezing temperatures. Learn about some available tools we can use to predict the first fall frost dates around the state.

small light green mites on a green stem

Which mite is it? Identifying the mites in wheat fields

In South Dakota, the most commonly encountered mites in wheat are wheat curl mite and brown wheat mite. In addition to feeding, wheat curl mites are vectors of Wheat streak mosaic virus. Brown wheat mites can build up large populations and injure wheat through feeding. There are other species of mites that may also be observed in wheat, but generally do not reach populations large enough to cause significant injury.

Color-coded map of the United States showing October 2022 temperature outlook. Temperatures in South Dakota are leaning above average. For assistance reading this graphic and data set, please call SDSU Extension at 605-688-4792.

2022 Fall and Early Winter Climate Outlook

The warmth of September is likely to continue into October with odds leaning towards drier than average conditions according to the latest climate outlook released on September 15, 2022.

Eastern South Dakota Water Conference participants.

Registration Open for the 2022 Eastern South Dakota Water Conference

September 21, 2022

Registration is open for the 2022 Eastern South Dakota Water Conference to be held on Wednesday, Oct. 12, at the McCrory Gardens Education and Visitor Center in Brookings, South Dakota.

A creamy white larva next to a hole where it had previously been feeding.

Biology and Management of Squash Vine Borer in the Garden

Squash vine borer larvae are serious pests of pumpkins, zucchini and other winter squashes. Learn how to identify and manage infestations before they impact plant health and productivity this fall.

Several brownish gray moths with light markings present on their wings.

Army Cutworms Returning to South Dakota

A black light trap at the SDSU West River Research Farm near Sturgis has started capturing army cutworm moths. This indicates that the moths that migrated west this spring are returning to the South Dakota plains to lay eggs.

A brownish tan grasshopper with black chevron marking on its hind legs sitting on a ripening tomato.

Protecting Tomatoes From Grasshoppers in the Garden

During dry summers, it's no surprise when grasshoppers start causing issues in gardens. Learn about some common grasshoppers that feed on tomato plants along with some ways to manage populations.

Lake water with intense algae bloom throughout.

Liebig’s Law of the Minimum and Phosphorus in South Dakota Surface Waters

Too much phosphorus in water can lead to increased growth of aquatic plants, algae blooms and fish kills. Learn about some recent research investigating the impact of phosphorus runoff on South Dakota's water resources.

Tablet computer displaying precision planting data.

The 5 R’s of Precision Agriculture

Precision agriculture is a management strategy that uses cutting-edge technology to gather, process and analyze information to provide optimized crop inputs. Learn about the five R's that guide its use on farms.

corn field with sunrise in the background

2019 Survey South Dakota Corn Nutrient Management Practices

Data from the 2019 survey South Dakota farmers was used to examine how local and operational characteristics such as geographic location within SD, tillage practice, and farm size were related to the adoption of various nutrient management practices.