How much nitrogen (N) does an organic grain or silage corn crop need? This project team, led by Jason Kaye at Penn State University, developed a model that predicts unfertilized corn yield, based on the N contributions of SOM and decomposing cover crops. This model has been integrated into an N decision support tool, which calculates the supplemental N fertilizer requirements for organic grain and silage corn in Pennsylvania.

Check out this Organic Crop Insurance resource kit from the Organic Agronomy Training Service (OATS). In it, you'll find a wide variety of helpful resources, including links to a short course, a podcast series, useful factsheets, articles, and more.

The National Organic Program Organic Integrity Learning Center supports the professional development and continuing education of professionals working to protect organic integrity by providing free online training. Explore The Learning Center and all it has to offer in terms of free training and outreach materials for organic farmers/operators and organic handlers.

This resource provides an overview and worksheet to assist farmers and researchers in estimating nitrogen budgets, addressing the complexities of managing organic nitrogen from compost, manures, and crop residues for optimal plant availability.