605-688-4395
Berg Agricultural Hall 310
Agronomy, Horticulture & Plant Science-Box 2207A
University Station
Brookings, SD 57007
Soil fertility guidelines for South Dakota cropping systems
Jason Clark
Assistant Professor & SDSU Extension Soil Fertility Specialist
Also by Jason Clark
Mar
03
Soil Health Hour
Join SDSU Extension experts to learn about soil health practices during this free webinar series on the first Wednesday of each month from October 7 through March 3 at 10:00 a.m. CDT.
Does It Pay to Build Up Soil Phosphorus in High-pH Fields?
In high-pH soils, Phosphorus fertilizer can react with calcium already in the soil and form compounds that crops cannot easily use. It means that applied Phosphorus fertilizer can become “tied up” in the soil, leaving many farmers wondering whether the fertilizer they pay for is really working for them.
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.