Jason Clark

Assistant Professor & SDSU Extension Soil Fertility Specialist

Jason Clark
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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

State & Regional Offices

SDSU Campus

Also by Jason Clark

Nitrogen rate map layered on top of a field

South Dakota On-Farm Nitrogen Rate Trial Program

The on-farm corn nitrogen fertilizer rate trial program will help farmers, crop advisors and ag service providers to design, implement, and analyze nitrogen rate trials.

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.

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