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Estimating Nitrogen Contribution from Cover Crops on Organic Vegetable and Cane Berry Farms : Final report Public Deposited

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  • 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. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog:
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