Drought: Crops

All Drought: Crops Content

Adult twospotted spider mites crawling on webbing that is attached to a leaf

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.

Mother cow with calf in a dry, drought-stressed rangeland.

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.

Color-coded drought monitor map of South Dakota. As of July 27, north-central South Dakota is facing extreme drought, while the rest of the state is under abnormally dry to severe drought conditions. A small portion of the southwest has adequate moisture.

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).

Small black beetles covering a partially defoliated leaf.

Flea Beetles Causing Issues in Canola

Large flea beetle populations in canola have been observed in neighboring states and within South Dakota. The hot, dry and sunny conditions that we have been experiencing throughout 2021 have been ideal for flea beetle populations.

Gray beetle with long antennae that are alternating white and black pattern on green leaf petiole.

Dectes Stem Borer May Be More of an Issue During 2021

Dectes stem borers are an annual pest of sunflower in South Dakota. During most years, they do not cause major issues in sunflower. However, we have observed increased issues with this pest during dry years.

Green and brown grasshoppers on the leaves of a sunflower plant.

Grasshoppers Already Moving Into Sunflower Fields

With grassland food sources being depleted earlier than usual due to drought, grasshoppers are moving into nearby crops in search of vegetation. In parts of western South Dakota, grasshopper nymphs have already been observed feeding on young sunflower plants.

a map of South Dakota showing the drought conditions

July Drought Hours to Address Livestock Nutrition, Crop Quality Concerns

July 15, 2021

More South Dakota acres are now in an extreme drought condition as lack of moisture and high temperatures continue to impact much of the state.

Corn plant with yellowing leaf edges due to potassium deficiency.

Corn Potassium and Drought

For many crop producers, potassium deficiency has become an increased concern, and this year’s drought conditions have resulted in potassium deficiency symptoms showing up in fields where it would normally not occur.

Two mites. From left: Green leaf with two yellow spider mites with dark spots. Green leaf with yellow spider mite.

Spider Mites Reported in South Dakota Crops

With drought conditions continuing in South Dakota, it isn’t surprising that two-spotted spider mite infestations are being reported throughout the state. With hot temperatures in the forecast and limited chances for precipitation, we can expect spider mite populations to thrive in infested fields.

Tan grasshopper with light colored stripes on its back sitting on the soil surface.

Grasshoppers Are Causing Concerns in South Dakota Crops

In 2020, grasshopper populations were an issue in parts of central and western South Dakota. The populations this year are moving into crops earlier and appear to be as bad as the ones observed last year.