Soil Fertility

All Soil Fertility Content

Oats growing in a no-till field.

Updating Oat Nitrogen Fertilizer Rate Recommendations in South Dakota

Research trial results for nitrogen fertilizer rate recommendation for oats in South Dakota.

Aerial view of the SDSU Northeast Research Farm.
Jan      Feb 06 - 26

Crop Hour

SDSU Extension Crop Hour webinars provide valuable information for South Dakota crop producers to help them improve their profitability and prepare for the upcoming season.

man holding a small pile of soil in his hands

Transitioning to Soil Health Systems in Eastern South Dakota Intended for beginners: Where do I start?

Fact sheet for beginners on where to start transitioning to soil health systems in eastern South Dakota.

A group of black heifer calves in a feedlot.

Using Feedlot Manure as a Crop Nutrient Source

Factsheet that reviews the steps to obtain a manure application rate based on crop need, soil and manure testing.

Aerial view of the SDSU Southeast Research Farm.
Jan 06 - 07

Southeast Research Farm Seminars @ Dakota Farm Show

Join SDSU Extension for a series of educational presentations during the Dakota Farm Show from January 6-7, 2026, at the USD DakotaDome (1101 N Dakota St, Vermillion, SD 57069).

Various chemical symbols for common nutrients found in garden soil over a selection of young plants emerging from garden soil.

Managing Phosphorus and Other Nutrients in Gardens

Fact sheet on managing phosphorus and other nutrients in gardens.

Winter wheat field.

Winter Wheat and Nitrogen: Decisions for 2026 Growing Season

With fertilizer representing one of the largest variable costs in wheat production, inefficient nitrogen use can quickly erode profit margins. This being said, an emphasis should be placed on how to improve nutrient management during the 2026 growing season.

Field showing sheet and rill erosion following a heavy rain event.

Soil Erosion Mitigation During Heavy Rainfall Events

Adopting soil health practices that minimize disturbance, increase surface cover and organic matter content, and keep roots growing in the soil can help to increase soil infiltration rates and reduce destruction of soil aggregates from heavy rain.

Gardener inspecting soil in a backyard garden plot.

Are Cheap Home Garden Soil Test Kits Accurate?

Inexpensive soil test kits are a method available for gardeners available to estimate soil pH and the level of nitrogen, phosphorous and potassium present in the soil.

A hand holding a soil sample taken from a soybean field.

Soil Testing Labs

This page contains a list of nearby state or private laboratories that can be used for crop production fields, gardens and lawns.