Assessing crop water stress of winter wheat by thermography under different irrigation regimes in North China Plain

Authors

  • Shamaila Zia Institute of Agricultural Engineering in the Tropics and Subtropics (440e), Universit?t Hohenheim, Stuttgart, Germany
  • Wenyong Du College of Science, Centre for Chemicals Application Technology, China Agricultural University, Beijing 100083, China
  • Wolfram Spreer Institute of Agricultural Engineering in the Tropics and Subtropics (440e), Universit?t Hohenheim, Stuttgart, Germany
  • Klaus Spohrer Institute of Agricultural Engineering in the Tropics and Subtropics (440e), Universit?t Hohenheim, Stuttgart, Germany
  • Xiongkui He College of Science, Centre for Chemicals Application Technology, China Agricultural University, Beijing 100083, China
  • Joachim Muller Institute of Agricultural Engineering in the Tropics and Subtropics (440e), Universit?t Hohenheim, Stuttgart, Germany

Keywords:

CWSI, Triticum aestivum L., stomatal conductance, canopy temperature, yield

Abstract

Thermal imaging can be used as an indicator of water stress due to the closure of stomatal aperture. In this paper, we analyzed the robustness and sensitivity of thermography of winter wheat in the North China Plain. The seasonal and diurnal variations of Crop Water Stress Index (CWSI) were evaluated. Five treatments were applied by means of irrigation, with plots receiving 100% of ETo(DI), 50%(D50), 16%(D16) and no irrigation(NI). A high correlation was found between stomatal conductance (gs) and CWSI, depending on the phenological stage of the crop with R2 = 0.44 at pre-heading stage and R2 = 0.77 at post-heading stage. In addition, a high correlation between yield and CWSI at different growth stages indicates that thermography can predict yield. Hourly measurements of canopy temperature were taken to study the effect of the time of day on image acquisition and it was found that midday was the most appropriate time. These results should assist in designing precision irrigation scheduling for setting the threshold values. Keywords: CWSI, Triticum aestivum L., stomatal conductance, canopy temperature, yield DOI: 10.3965/j.ijabe.20120503.003 Citation: Zia S, Du W Y, Spreer W, Spohrer K, He X K, M

Author Biographies

Shamaila Zia, Institute of Agricultural Engineering in the Tropics and Subtropics (440e), Universit?t Hohenheim, Stuttgart, Germany

PhD student, Institute of Agricultural Engineering (440e), University Hohenheim, Germany. Tel: +49(0)71145923119; Fax: +4971145923298

Wenyong Du, College of Science, Centre for Chemicals Application Technology, China Agricultural University, Beijing 100083, China

PhD, Tel.:+8615101129260

Wolfram Spreer, Institute of Agricultural Engineering in the Tropics and Subtropics (440e), Universit?t Hohenheim, Stuttgart, Germany

PhD, Garbenstrasse 9, D-70593, Universitat Hohenheim, Stuttgart, Germany. Tel.: +49(0)71145923119 Fax: +4971145923298

Klaus Spohrer, Institute of Agricultural Engineering in the Tropics and Subtropics (440e), Universit?t Hohenheim, Stuttgart, Germany

PhD, Tel.: +49(0)71145922858 Fax: +49 (0)71145922712

Xiongkui He, College of Science, Centre for Chemicals Application Technology, China Agricultural University, Beijing 100083, China

PhD, Professor. Tel.: +861062731446 Fax: 86-10-62731446

Joachim Muller, Institute of Agricultural Engineering in the Tropics and Subtropics (440e), Universit?t Hohenheim, Stuttgart, Germany

PhD, Professor, Tel.:+49(0)711 45922490 Fax: +49(0)71145923298

References

[1] Li J, Inanaga S, Li Z, Eneji A E. Optimizing irrigation scheduling for winter wheat in the North China Plain. Agriculture Water Management, 2005; 76: 8-23.
[2] Zhang J, Sui X, Li B, Su B, Li J, Zhou D. An improved water-use efficiency for winter wheat grown under reduced irrigation. Field Crop Research, 1998; 59: 91-98.
[3] Jinsheng J, Jingjie Y, Changming L. Groundwater regime and calculation of yield response in North China Plain: a case study of Luancheng County in Hebei Province. Journal of Geographical Science, 2002; 12: 217-225.
[4] Grant O M, Tronina ?, Jones H G, Chaves M M. Exploring thermal imaging variables for the detection of stress responses in grapevine under different irrigation regimes. Journal of Experimental Botany, 2006a; (special edition): 1-11.
[5] Spreer W, Ongprasert S, Hegele M, W

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Published

2012-09-21

How to Cite

Zia, S., Du, W., Spreer, W., Spohrer, K., He, X., & Muller, J. (2012). Assessing crop water stress of winter wheat by thermography under different irrigation regimes in North China Plain. International Journal of Agricultural and Biological Engineering, 5(3), 24–34. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/573

Issue

Vol. 5 No. 3 (2012): IJABE

Section

Natural Resources and Environmental Systems

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