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Ag Water, Soil Amendments, Exemption Conditions Top List of FSMA Concerns

New federal regulations will likely bring big changes in how food is grown, harvested, packed, and processed in the U.S.; small farms and local and regional food systems will feel it too. The Food Safety Modernization Act, ...

Nick Andrews, Lauren Gwin | Jul 2013 | Article

Estimating Nitrogen Contribution from Cover Crops on Organic Vegetable and Cane Berry Farms

The main objective of this project was to compare on-farm measurement techniques for estimating N-contributions from cover crops using 1) separated species lab tests (a standard experimental method), 2) bulked species lab tests, 3) fresh weight, 4) dry weight and 5) canopy height and density. We also recorded relative weed biomass in different cover treatments. After the project started, collaborating growers said they were interested in predicting available N from cover crops. We used a mineralization model to compare the ability to predict plant-available nitrogen (PAN) from bulked species and separated species sampling methods.

Nick Andrews, Garry Stephenson | Apr 2018 | Fact Sheet