Plants require many essential nutrients, including nitrogen, phosphorus, potassium, sulfur, magnesium, calcium, iron, zinc, manganese, copper, boron, and chloride. In South Dakota soils, the nutrients most commonly needed are nitrogen, phosphorus, potassium, and sulfur.
This factsheet provides unit conversions between different units that soil labs recommend for fertilizer application rates to gardens for nitrogen, phosphorus, and potassium.
A 2025 trial in Brookings, South Dakota aimed to detect the influences of various warm-season cover crop living mulches on pest pressure in tomatoes and cucumbers and the interactions between both grafted and nongrafted tomatoes and cucumbers and the living mulch.
This fact sheet summarizes research-based practices to help producers, consultants, and conservation professionals make practical decisions that protect both productivity and stewardship.
This fact sheet summarizes what research shows about how swine manure affects SOC and what that means for field-level decisions.