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Agriculture 2016, 6(4), 58; doi:10.3390/agriculture6040058

Seasonal Canopy Temperatures for Normal and Okra Leaf Cotton under Variable Irrigation in the Field

Cropping Systems Research Laboratory, 3810 4th St Lubbock, TX 79415, USA
Author to whom correspondence should be addressed.
Academic Editor: Mohammad Valipour
Received: 22 September 2016 / Revised: 20 October 2016 / Accepted: 25 October 2016 / Published: 4 November 2016
(This article belongs to the Special Issue Innovative Approaches to Agricultural Water Management)
View Full-Text   |   Download PDF [3132 KB, uploaded 24 November 2016]   |  


Temperature affects a number of physiological factors in plants and is related to water use, yield and quality in many crop species. Seasonal canopy temperature, measured with infrared thermometers, is often used in conjunction with environmental factors (e.g., air temperature, humidity, solar radiation) to assess crop stress and management actions in cotton. Normal and okra leaf shapes in cotton have been associated with differences in water use and canopy temperature. The okra leaf shape in cotton is generally expected to result in lower water use and lower canopy temperatures, relative to normal leaf, under water deficits. In this study canopy temperatures were monitored in okra and normal leaf varieties for a growing season at four irrigation levels. Differences in canopy temperature (<2 °C) were measured between the two leaf shapes. As irrigation levels increased, canopy temperature differences between the leaf shapes declined. At the lowest irrigation level, when differences in sensible energy exchanges due to the okra leaf shape would be enhanced, the canopy temperature of the okra leaf was warmer than the normal leaf. This suggests that varietal differences that are not related to leaf shape may have more than compensated for leaf shape differences in the canopy temperature. View Full-Text
Keywords: cotton; canopy temperature; okra leaf; normal leaf; leaf shape; water deficits cotton; canopy temperature; okra leaf; normal leaf; leaf shape; water deficits

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Mahan, J.R.; Payton, P.R.; Laza, H.E. Seasonal Canopy Temperatures for Normal and Okra Leaf Cotton under Variable Irrigation in the Field. Agriculture 2016, 6, 58.

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