Yield Goal versus Delta Yield for Predicting Fertilizer Nitrogen Need in Corn

By John A. Lory, P. Scharf. 2003

141 citations recorded by the source corpus.

Subfields: Agronomy and Crop Science, Ecology, Evolution, Behavior and Systematics, Environmental Engineering

View Paper: https://www.semanticscholar.org/paper/a7ff1d0bb04872af457b0a508ad7b405b848c713

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Agronomy and Crop Science

1. John F. Shanahan
2. Richard B. Ferguson
3. Newell R. Kitchen
4. Kenneth A. Sudduth
5. James S. Schepers
6. P. Scharf

In Ecology, Evolution, Behavior and Systematics

1. Anatoly A. Gitelson

In Environmental Engineering

1. Richard B. Ferguson
2. John F. Shanahan
3. Anatoly A. Gitelson
4. P. Scharf
5. Jinru Xue
6. Baofeng Su
7. Andrés Viña

Citations in the corpus

• The myth of nitrogen fertilization for soil carbon sequestration. (2007, background): “Such evidence is substantiated by on-farm N-response studies because there is often a limited diff erence, if any, between fertilized and unfertilized (check) plot yields (e.g., IAEA, 1970; Bundy and Malone, 1988; Blackmer et al., 1989, 1992; Fox et al., 1989; Meisinger et al., 1992; Schmitt and Ran”
• Active Sensor Reflectance Measurements of Corn Nitrogen Status and Yield Potential (2008, background): “, 2005), and (iii) failure to account for temporal variability and the infl uence of weather on mid-season N needs (Lory and Scharf, 2003).”
• Sensor‐Based Nitrogen Applications Out‐Performed Producer‐Chosen Rates for Corn in On‐Farm Demonstrations (2011, background): “Scharf et al. (2006a) showed in a large and geographically-dispersed study that chlorophyll meter (transmittance) measurements of corn leaves provided much better prediction of the EONR than any of 26 soil N tests.”
• Need for a Soil‐Based Approach in Managing Nitrogen Fertilizers for Profitable Corn Production (2006, background): “Such sites have often been excluded in averaging response data to evaluate yield-based N recommendations (e.g., Vanotti and Bundy, 1994; Brown, 1996; Lory and Scharf, 2003; Nafziger et al., 2003), but even so, the recommended rates tend to be excessive.”
• Spatially variable corn yield is a weak predictor of optimal nitrogen rate (2006, background): “Lory and Scharf (2003) combined results from a large number of N rate plot experiments with corn in humid regions of the USA, concluding that there was only a very weak relationship between yield goal and economically optimal N fertilizer rate in these experiments.”