Chlorophyll meter readings can predict nitrogen need and yield response of corn in the north-central USA

By Peter C. Scharf, S. Brouder, R. Hoeft. 2006

156 citations recorded by the source corpus.

Subfields: Environmental Chemistry, Environmental Engineering, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/e0e4d980cbfc005d25a4faddb38728e5336f65a8

How researchers see this paper

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

In Environmental Chemistry

1. D. Karcher
2. Daniel W. Barker
3. John E. Sawyer
4. Tyson E. Ochsner
5. Andres Patrignani
6. M. Richardson

In Environmental Engineering

1. Richard B. Ferguson
2. John F. Shanahan
3. Daniel W. Barker
4. John E. Sawyer
5. Anatoly A. Gitelson
6. P. Scharf
7. Jinru Xue
8. Baofeng Su

In Water Science and Technology

1. Daniel W. Barker
2. John E. Sawyer

Citations in the corpus

• Active Sensor Reflectance Measurements of Corn Nitrogen Status and Yield Potential (2008, background): “Work by Blackmer et al. (1993) and Blackmer and Schepers (1994, 1995) has shown that CM assessments can be used to monitor corn N status for more effi cient fertilizer N application.”
• Sensor‐Based Nitrogen Applications Out‐Performed Producer‐Chosen Rates for Corn in On‐Farm Demonstrations (2011, background): “As corn growth stage advances, the diff erence in spectral properties between N-suffi cient and N-stressed corn gets larger 1686 Agronomy Journa l • Volume 103, Issue 6 • 2011 (Scharf et al., 2006a).”
• Using Relative Chlorophyll Meter Values to Determine Nitrogen Application Rates for Corn (2007, methodology): “In a regional project, Scharf et al. (2006) found that CM readings were related to EONR and corn yield response to N. The relationships were stronger for normalized than absolute readings, with CM readings taken later in the season, and when N had not been applied.”
• Association of “Greenness” in Corn with Yield and Leaf Nitrogen Concentration (2011, background): “Scharf et al. (2006) found that the relationship between SPAD values and economically optimum N rate was much stronger when using normalized values as opposed to absolute values.”
• SPAD Values and Nitrogen Nutrition Index for the Evaluation of Rice Nitrogen Status (2014, background): “99 have been reported between relative grain yield (ratio of grain yield to the highest yield) and RSPAD values in corn (Piekielek et al., 1995; Waskom et al., 1996; Scharf et al., 2006).”