Show simple item record

dc.contributor.authorAlzaben, Heba
dc.contributor.authorFraser, Roydon
dc.contributor.authorSwanton, Clarence 14:11:46 (GMT) 14:11:46 (GMT)
dc.description.abstractNitrogen is one of the most important yield-limiting nutrients for corn (Zea mays). The ability of thermal remote sensing to detect nitrogen deficiency in corn may enable precision agriculture to modify nitrogen rates according to field conditions. This study applies the exergy destruction principle as a theory to explain the inverse relationship between surface temperature and nitrogen rate. Two hypotheses were developed. First, it was hypothesized that agricultural crops experiencing greater growth and providing greater yield will have lower surface temperature. The second hypothesis was that corn grown under optimum levels of nitrogen will have lower surface temperatures compared to corn grown under nitrogen stressed conditions. Field studies were conducted during two summer seasons (2016 and 2017) on an established long-term field trial of corn yield response to varying rates of nitrogen. It was found that corn surface temperature decreased as the rate of nitrogen increased. A shallow but statistically significant (P < 0.05) negative slope was observed consistently with increasing rates of nitrogen. Surface temperature measurements, however, were variable. This variability was the result of external and weather dependent variables that influenced leaf surface temperature. Despite this variability, the exergy destruction principle provides a theory from which thermal remote sensing can be applied through the use of surface temperature measurements to detect physiological stress in crop plants.en
dc.description.sponsorshipNatural Sciences and Engineering Research Council || Growing Forward 2en
dc.subjectexergy destruction principleen
dc.subjectthermal remote sensingen
dc.subjectcrop stressen
dc.titleAn Inverse Correlation between Corn Temperature and Nitrogen Stress: A Field Case Studyen
dcterms.bibliographicCitationAlzaben, H., Fraser, R., & Swanton, C. (2019). An Inverse Correlation between Corn Temperature and Nitrogen Stress: A Field Case Study. Agronomy Journal, 111(6), 3207-3219.en
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen

Files in this item


This item appears in the following Collection(s)

Show simple item record


University of Waterloo Library
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
519 888 4883

All items in UWSpace are protected by copyright, with all rights reserved.

DSpace software

Service outages