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Showing 1 to 8 of 8 for “"Eonr"”.
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Late-split application of nitrogen on corn
… to the data, and economically optimum N rates (EONR), the yields at those rates (EOY), and return to nitrogen (RTN) values were calculated. EONR values ranged from 125 to 214 kg N ha-1 in S-C trials conducted during 2016 with EOY values ranging from 14.6 to 15.0 Mg ha-1. EONR values in C-C …
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Dialing in the most corn-profitable and environmentally responsible nitrogen rate
… emissions. The mean economic optimum N rate (EONR) was 173 kg N ha-1, with a coefficient of variation (CV) of 23%, corresponding to an optimum range of 133 to 213 kg N ha-1. Above this threshold, yield gains plateaued or declined while residual soil N, N2O-N emissions, and NO3-N leaching …
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Estimating the Contributions of Soil and Cover Crop Nitrogen Mineralization for Corn
… = 1.6 Mg ha-1) and economical optimum N rate (EONR) (RMSE = 30 kg N ha-1) respectively. Efforts to improve the model by adding economically unresponsive sites improved the model performance to explain 45% of the variability in EONR. For the second objective, a lab incubation was performed to …
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Using crop simulation to optimize variable rate experimentation
… to calculate the Economic Optimum Nitrogen Rate (EONR), and finally use that EONR in a regular crop production. Spatially variable layers of data that characterized a field were transformed into APSIM parameters. Daily weather events were obtained from historical weather data for the field’s …
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Effect of irrigation on fertilizer nitrogen requirement, economic returns, and water availability in a corn-soybean rotation
… affected the economically optimum N rate (EONR) and the yield potential of corn, as affected by irrigation; and 4) Evaluate the effect of irrigation strategy on resilience of maximum corn yield to timing of nitrogen application. Two irrigation experiments were conducted at UNIVERSITY OF …
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Nitrogen recommendation systems, weather effects on nitrogen response, and the prediction of nitrogen response in Illinois
… site-specific economically optimal N rates (EONR) that change based on expected or observed weather remains elusive. Being able to predict N response will allow producers to adjust N application to be closer to economically optimal given expected growing conditions, increasing profitability …
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Effects of Anhydrous ammonia application timing on corn yield and profitability
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Evaluation of nitrogen management strategies and policies using high-throughput crop simulations
… time, they recommend N rates below the observed EONR at harvest. In that situation, the yield penalty is higher, and it is usually not compensated by other more successful recommendations. Static tools that tend to over-predict, avoid that penalty, and provide similar value as that of the more …