South Dakota Extension & Soil Testing Directory
Find your local South Dakota County Cooperative Extension office, official state university soil analysis lab, and Master Gardener volunteer plant clinics.
🔬 State Soil Testing Laboratory
Official Lab: SDSU Extension Soil Testing Partners
Standard Fee: $15 routine soil analysis
Turnaround Time: 5 to 7 business days
State residents can obtain soil sample bags and submittal forms at any local county extension branch.
🌱 State Growing Conditions
Soil Types: Great Plains Black Prairie Loam
Hardiness Zones: Zone 4a / 5b
Popular Crops: Sunflowers, corn, soybeans, spring wheat, cool-season turf
South Dakota prairie soils are deep; maintain soil structure with organic mulch.
Featured County Directories in South Dakota (5 Listings)
Minnehaha County
Extension Office: South Dakota State University Extension - Minnehaha County
Soil Lab Fee: $15 routine soil analysis
Phone: (460) 555-0199
Pennington County
Extension Office: South Dakota State University Extension - Pennington County
Soil Lab Fee: $15 routine soil analysis
Phone: (461) 555-0199
Lincoln County
Extension Office: South Dakota State University Extension - Lincoln County
Soil Lab Fee: $15 routine soil analysis
Phone: (460) 555-0199
Brown County
Extension Office: South Dakota State University Extension - Brown County
Soil Lab Fee: $15 routine soil analysis
Phone: (460) 555-0199
Brookings County
Extension Office: South Dakota State University Extension - Brookings County
Soil Lab Fee: $15 routine soil analysis
Phone: (460) 555-0199
📦 Recommended Mail-In Soil Test Kits & Meters
FTC Affiliate Disclosure: We may earn a commissionIf you need immediate results without waiting for university mail-in lab turnaround times, these top-rated professional home soil test kits provide fast pH, N, P, and K diagnostic analysis:
MySoil Soil Test Kit
Professional mail-in kit analyzed by accredited labs. Returns 13 essential nutrient values (N, P, K, pH, Micronutrients) & customized fertilizer recommendations via app.
Luster Leaf Rapitest 1601
Popular color-comparator kit for 10 instant soil tests (pH, Nitrogen, Phosphorus, Potash). Includes tailored plant preference chart.
Sonkir 3-in-1 Soil Tester
Instant probe sensor for soil moisture, pH, and sunlight levels. Requires no batteries. Perfect for potted plants, lawns, and raised beds.
📋 Request Local Extension & Lawn Testing Assistance in South Dakota Statewide
Need help interpreting your lab results or finding local agricultural extension agents? Fill out the brief form below:
Frequently Asked Questions: South Dakota Soil & Extension
How do I get my soil tested in South Dakota?
To test your soil in South Dakota, collect 10 to 12 soil cores from a depth of 4 to 6 inches across your garden or field, air-dry the sample indoors, fill out your county extension submission form, and submit it to SDSU Extension Soil Testing Partners or your local county extension office.
How much does soil testing cost in South Dakota?
Routine soil fertility analysis in South Dakota typically costs $15 routine soil analysis. Turnaround time for results is usually 5 to 7 business days.
Does every county in South Dakota have a Cooperative Extension Office?
Yes. Every county in South Dakota is served by the state's Land-Grant University Extension system. While our directory highlights primary regional office hubs and university labs, local extension agents serve horticulturists, farmers, and home gardeners across all counties in South Dakota.
Written & Verified by Sahajul
Verified Author & Founder
Sahajul is an independent agricultural data researcher based in India and founder of LocalSoilLab.com. He specializes in compiling, structuring, and verifying US land-grant university extension services, soil lab testing fee schedules, and county Master Gardener contact directories directly from official .edu and USDA NIFA portals.