Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Fig. 1. The effectiveness of yield at the economically optimum N rate (EONR) rate as a predictor of EONR for corn. Data summarize 298 experiments of corn response to fertilizer N in five states.





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HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Crop Science Vadose Zone Journal
Journal of Natural Resources
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