James R. Mahan^1*, Andrew W. Young², Paxton Payton¹

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¹ Cropping Systems Research Laboratory, The Agricultural Research Service, United States Department of Agriculture (USDA/ARS#), Lubbock, TX, USA.
² Plant and Soil Science Department, Texas Tech University, Lubbock, TX, USA.
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Abstract: Water deficits are major limiters of crop yield worldwide. The detection of water deficits can be difficult. Measurements of the aerial and soil environment are often used to infer the water status and detect water deficits. Since crop yield accumulates incrementally and cumulatively over seasonal time scales, continuous direct monitoring of the water status of the crop may provide needed insight into plant/environment interactions. Canopy temperature can be measured near continuously on seasonal scales in the field. Cotton was grown under 11 irrigation regimes in 2009 and 2010 with water deficits from 26% to 86% of crop evapotranspiration. Yield varied accordingly from ~500 kg·ha-1 to ~2600 kg·ha-1. Canopy temperature was measured on a 15-minute interval for ~65 days in each year. Yield was described by a linear function of total water (irrigation + rain) for each year with similar slopes and different intercepts. When canopy temperature was used as a surrogate for total water, yield was linearly related to daytime leaf-to-air VPD, mean seasonal canopy temperature, mean seasonal daytime canopy temperature, and cumulative seasonal daytime canopy temperature. Limiting the analysis to daytime periods improved the ability to account for yield variation. Mean daytime seasonal canopy temperature and cumulative seasonal daytime temperature were most effective in accounting for yield variation across the seasons with a single regression line for both years.

Keywords: Canopy Temperature, Cotton, Drip Irrigation, Evapotranspiration, Gossypium hirsutum, Yield

Cite this paper: R. Mahan, J. , W. Young, A. and Payton, P. (2015) Continuously Monitored Canopy Temperature as a Proxy for Plant Water Status. American Journal of Plant Sciences, 6, 2287-2302. doi: 10.4236/ajps.2015.614232.

References

[1]   Smith, D.M. and Allen, S.J. (1996) Measurement of Sap Fow in Plant Stems. Journal of Experimental Botany, 47, 1833-1844.
http://dx.doi.org/10.1093/jxb/47.12.1833

[2]   Steppe, K.D., De Pauw, J.W. and Lemeur, R. (2008) A Step towards New Irrigation Scheduling Strategies Using Plant-Based Measurements and Mathematical Modelling. Irrigation Science, 26, 505-517.
http://dx.doi.org/10.1007/s00271-008-0111-6

[3]   Lee, K.M., Driever, S.M., Heuvelink, E. and Rüger, S. (2012) Evaluation of Diel Patterns of Relative Changes in Cell Turgor of Tomato Plants Using Leaf Patch Clamp Pressure Probes. Physiologia Plantarum, 146, 439-447.
http://dx.doi.org/10.1111/j.1399-3054.2012.01637.x

[4]   Hunsaker, D.J., Barnes, E.M., Clark, T.R., Fitzgerald, G.J. and Pinter, P.J. (2005) Cotton Irrigation Scheduling Using Remotely Sensed and FAO-56 Basal Crop Coefficients. Transactions of the American Society of Agricultural Engineers, 48, 1395-1407.
http://dx.doi.org/10.13031/2013.19197

[5]   Evett, S.R. and Parkin, G.W. (2005) Advances in Soil Water Content Sensing the Continuing Maturation of Technology and Theory. Vadose Zone Journal, 4, 986-991.
http://dx.doi.org/10.2136/vzj2005.0099

[6]   Leib, B.G., Jabro, J.D. and Matthews, G.R. (2003) Field Evaluation and Performance Comparison of Soil Moisture Sensors. Soil Science, 168, 396-408.
http://dx.doi.org/10.1097/01.ss.0000075285.87447.86

[7]   Evett, S.R., Schwartz, R.C., Tolk, J.A. and Howell, T.A. (2009) Soil Profile Water Content Determination: Spatiotemporal Variability of Electromagnetic and Neutron Probe Sensors in Access Tubes. Vadose Zone Journal, 8, 926-941.
http://dx.doi.org/10.2136/vzj2005.0099

[8]   Jackson, R.D., Idso, S.B., Reginato, R.J. and Pinter, P.J. (1981) Canopy Temperature as a Crop Water Stress Indicator. Water Resources Research, 17, 1133-1138.
http://dx.doi.org/10.1029/WR017i004p01133

[9]   Idso, S.B., Jackson, R.D., Pinter, P.J., Reginato, R.J. and Hatfield, J.L. (1981) Normalizing the Stress Degree Day Parameter for Environmental Variability. Agricultural Meteorology, 24, 45-55.
http://dx.doi.org/10.1016/0002-1571(81)90032-7

[10]   Upchurch, D.R., Wanjura, D.F., Burke, J.J. and Mahan, J.R. (1996) Biologically-Identified Optimal Temperature Interactive Console (BIOTIC) for Managing Irrigation. US Patent 5, 539.637.

[11]   Wanjura, D.F., Upchurch, D.R. and Mahan, J.R. (2006) Behavior of Temperature-Based Water Stress Indicators in BIOTIC-Controlled Irrigation. Irrigation Science, 24, 223-232.
http://dx.doi.org/10.1007/s00271-005-0021-9

[12]   Mahan, J.R. and Yeater, K.M. (2008) Agricultural Applications of a Low-Cost Infrared Thermometer. Computers and Electronics in Agriculture, 64, 262-267.
http://dx.doi.org/10.1016/j.compag.2008.05.017

[13]   Mahan, J.R., Young, A.W. and Payton, P. (2012) Deficit Irrigation in a Production Setting: Canopy Temperature as an Adjunct to ET Estimates. Irrigation Science, 30, 127-137.
http://dx.doi.org/10.1007/s00271-011-0269-1

[14]   Murray, F.W. (1967) On the Computation of Saturation Vapor Pressure. Journal of Applied Meteorology, 6, 203-204.
http://dx.doi.org/10.1175/1520-0450(1967)006<0203:OTCOSV>2.0.CO;2

[15]   Allen, R.G., Pereira, L.S., Raes, D. and Smith, M. (1998) Crop Evapotranspiration. FAO Irrigation and Drainage Paper 56. Food and Agricultural Organization of the UN, Rome.

[16]   Barenbrug, A.W.T. (1974) Psychrometry and Psychrometric Charts. 3rd Edition, Cape and Transvaal Printers Ltd., Cape Town.

[17]   Perry, S.W., Krieg, D.R. and Hutmacher, R.B. (1983) Photosynthetic Rate Control in Cotton: Photorespiration. Plant Physiology, 73, 662-665.
http://dx.doi.org/10.1104/pp.73.3.662

[18]   Mahan, J.R. and Upchurch, D.R. (1988) Maintenance of Constant Leaf Temperature By Plants. 1. Hypothesis of Limited Homeothermy. Environmental and Experimental Botany, 28, 351-357.
http://dx.doi.org/10.1016/0098-8472(88)90059-7

[19]   Wanjura, D.F. and Mahan, J.R. (1994) Thermal Environment of Cotton Irrigated Using Canopy Temperature. Irrigation Science, 14, 199-205.
http://dx.doi.org/10.1007/BF00190191

[20]   Smith, M., Allen, R.G., Monteith, J.L., Pereira, L.S., Perrier, A. and Pruitt, W.O. (1991) Report on the Expert Consultation on Revision of FAO Guidelines for Crop Water Requirements, Land and Water Dev. Division, FAO, Rome.
http://www.fao.org/WAICENT/FaoInfo/Agricult/agl/aglw/webpub/REVPUB.htm

[21]   Mauget, S.A. and Leiker, G. (2010) The Ogallala Agro-Climate Tool. Computers and Electronics in Agriculture, 74, 155-162.
http://dx.doi.org/10.1016/j.compag.2010.08.002

[22]   Jackson, R.D. (1981) Soil Moisture Inferences from Thermal Infrared Measurements of Vegetation Temperatures. International Geosience and Remote Sensing Symposium, I, 364-374.

[23]   Tufte, E.R. (2006) Beautiful Evidence. Graphics Press LLC, Cheshire.

[24]   Burke, J.J., Mahan, J.R. and Hatfield, J.L. (1988) Crop-Specific Thermal Kinetic Windows in Relation to Wheat and Cotton Biomass Production. Agronomy Journal, 80, 553-556.
http://dx.doi.org/10.2134/agronj1988.00021962008000040001x

[25]   Dai, Z., Edwards, G.E. and Ku, M.S. (1992) Control of Photosynthesis and Stomatal Conductance in Ricinus communis L. (Castor Bean) by Leaf to Air Vapor Pressure Deficit. Plant Physiology, 99, 1426-1434.
http://dx.doi.org/10.1104/pp.99.4.1426

[26]   Tibbitts, T.W. (1979) Humidity and Plants. BioScience, 29, 358-363.
http://dx.doi.org/10.2307/1307692

[27]   Bunce, J.A. (1997) Does Transpiration Control Stomatal Responses to Water Vapour Pressure Deficit? Plant Cell and Environment, 20, 131-135.
http://dx.doi.org/10.1046/j.1365-3040.1997.d01-3.x

[28]   Angus, J.F. and van Herwaarden, A.F. (2001) Increasing Water Use and Water Use Efficiency in Dryland Wheat. Agronomy Journal, 93, 290-298.
http://dx.doi.org/10.2134/agronj2001.932290x

[29]   Baker, J.T., Gitz, D.C., Payton, P., Wanjura, D.F. and Upchurch, D.R. (2007) Using Leaf Gas Exchange to Quantify Drought in Cotton Irrigated Based on Canopy Temperature Measurements. Agronomy Journal, 99, 637-644.
http://dx.doi.org/10.2134/agronj2006.0062