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Soil Fertility

All Soil Fertility Content

A soil coring device that has been pounded into ground. Next to it are trimmed samples in rings used to measure soil bulk density.

Bulk Density is an Indicator of Soil Health

Bulk density is a commonly measured soil property that can indicate how compacted a soil is and can be used to calculate the percent pore space in the soil.

Tractor pulling manure a spreader through a harvested crop field.

Using Feedlot Manure to Reduce Crop Production Costs

Livestock waste can be a valuable source of crop nutrients when correctly managed. Taking a strategic approach to feedlot manure application can increase the value of manure as part of your overall system.

Bare field with visible salt buildup on soil surface.

SDSU Extension hosting Every Acre Counts Bus Tour on Aug. 9

July 26, 2023

South Dakota State University Extension will host an Aug. 9 bus tour highlighting award-winning precision agricultural strategies used by farmers to mitigate saline soils while also maximizing productivity and profitability.

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.

Kristine Lang and Rhoda Burrows look at some plants with two men inside a high tunnel

The South Dakota State University Southeast Research Farm to host Field Day on July 11

June 30, 2023

The South Dakota State University Southeast Research Farm Field Day will be held on July 11 near Beresford, South Dakota.

man holding a small pile of soil in his hands

Fertilizer Recommendation Guide

SDSU Extension fertilizer recommendations are based on field research in South Dakota and neighboring states.

Tractor loading a liquid manure applicator in a bare field.

Swine Manure for Spring Planting

Did you know that swine manure is a valuable fertilizer that offers many benefits? Learn how it can be used to promote healthy plant growth, improve soil fertility, and reduce the need for synthetic fertilizers.

an image of the cover of the SDSU Extension Fertilizer Recommendations Guide

SDSU Extension releases updated 2023 corn nitrogen fertilizer rate guidelines

March 27, 2023

South Dakota State University Extension has updated the corn nitrogen Fertilizer Recommendations Guide to reflect lowered rate recommendations.

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.

Winter wheat emerging in a flooded field.

Effects of Spring Flooding in Winter Wheat

Every winter, growers are curious if their winter wheat will survive the winter. Learn some key factors that determine plant survival along with tips for assessing your fields this spring.