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Yellow wheat field with green weeds throughout.

Weed Control Field Test Data

Data books to use as a reference to select appropriate herbicide(s) for row crops

Color-coded map showing rainfall accumulation at the locations of the four hub study sites in South Dakota. For assistance reading this graphic and data set, please call SDSU Extension at 605-688-6729.

Range Roundup: Precision Agriculture Range Project With Producer Participation

SDSU Extension researchers started a new precision agriculture range project using remote sensing, machine learning, and ground-collected vegetation samples to develop an application to measure forage quality and quantity throughout the state in near real-time.

Crop Hour

SDSU Extension will deliver a series of virtual Crop Hour webinars January 7 to February 27, 2025, every Tuesday, Wednesday and Thursday from 10:00 a.m.-11:00 a.m. CST.

Spring Wheat Variety Trial Results

The 2025 spring wheat variety trials were planted throughout various locations in South Dakota.

Women look through potted plants on a table in a classroom

Registration open for 2026 SDSU Extension Master Gardener training

January 29, 2026

Registration is open for the 2026 South Dakota State University Extension Master Gardener training that will be offered from April 1 to July 31, 2026.

A sprawling sorghum field ready for harvest

Sorghum Trial Results

In 2025, sorghum trials were conducted in 2 locations in South Dakota.

Plastic bag containing numerous green larvae.

Let SDSU Extension know how alfalfa insects are affecting you

January 29, 2026

South Dakota State University Extension is encouraging forage producers to participate in a survey about managing alfalfa insects.

An oats field with numerous small rows of green, oat grass emerged throughout.

Oat Nitrogen Fertilizer Rate Guidelines: Do we use the yield goal or maximum return to nitrogen approach?

Nitrogen is an essential plant nutrient commonly applied to oat crops. It is important to apply an appropriate rate of nitrogen fertilizer to oats, as too little can reduce economic return, while too much can lead to potential negative environmental effects.

Nitrogen rate map layered on top of a field

SDSU Extension invites corn farmers to join on-farm nitrogen fertilizer trial program

February 06, 2026

South Dakota State University Extension and Premier Crop Systems are recruiting corn farmers to participate in nitrogen fertilizer trials.

A herd of cattle gather around a stock pond on a vast, lush grassland. Courtesy: USDA [CC BY 2.0]

Weed Control: Pasture and Range

There are many undesirable plants or invasive plant species in South Dakota's 24 million acres of native and tame pasture range. This guide provides a summary of different herbicide suggestions and uses.