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Hands holding a clump of healthy soil from a no-till field.

Biological Agronomy

Biological agronomy is an adaptive soil management system used to build soil microbiology through intensive regenerative practices that increase carbon and nutrient availability for profitable crop production.

Professional portrait of Graig Reicks

SDSU Extension welcomes new Weed Ecology Field Specialist

February 28, 2025

In his role, Reicks will provide guidance for weed management in specialty crops, pastures and rangelands, organic systems, lawns/gardens and public right-of-ways. He is based in Brookings.

Left: Lady beetle on red clover. Right: Cabbage looper on broccolini.

Friends and Foes of Brassica Crops

Brassica crops are a group of plants widely cultivated for their nutritional value and versatility in agriculture. Understanding their relationship with beneficial and detrimental insects is crucial for maintaining healthy crops and productive harvests.

A medium orange and black butterfly resting with its wings open on small green leaves in a grassy area.

Generalist Host Plants in South Dakota

Many butterflies and moths are generalists, meaning that their larva can use a variety of host plants as food. Learn about some of the best host plants you can grow in your yard to support butterflies, moths, and everything that relies on them!

Left: Squash bee adult. Right: Male long-horned bee.

Beneficial Pollinators: Squash Bees and Long-Horned Bees

South Dakota is home to more than 400 species of native bees. In this article, we will highlight the squash bee and the long-horned bee, two beneficial native pollinators.

A fly with a metallic body, long legs, and clear wings with smoky markings.

Flying Gems: Long-Legged Flies

Whether scouting for pests in crops or in a garden, chances are you’ve encountered a long-legged fly. These insects provide essential biocontrol of many insect pests and should be encouraged in the landscape.

A black and yellow striped fly with large red eyes resting on a flower. The fly is covered in yellow pollen.

It’s a Bee! It’s a Wasp! No, It’s a Hover Fly!

Many types of insects are responsible for some degree of pollination in landscapes. In this article, we will focus on the syrphid fly as both an important pollinator and a beneficial insect predator.

Two dandelions side by side. The left has a bee foraging on it. The right has a hover fly foraging on it..

Should I Get Rid Of My Dandelions?

While there is much appeal to having a lawn that is free of other plants, there can be benefits. Some weeds that are sprayed out of lawns, including dandelions, can serve as early-season food sources for pollinators.

A metallic blue-green tiger beetle feeding on a light green caterpillar.

Tiger Beetles: Beneficial Predators and Ecosystem Health Indicators

Tiger beetles are generalist predators, meaning they prey on a wide variety of pests. Observing them in a landscape is a great sign that an ecosystem is healthy and supporting both prey and predators.

Two dandelions side by side. The left has a bee foraging on it. The right has a hover fly foraging on it..

Why Those Dandelions in Your Yard Aren’t So Bad

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.