Irrigation scheduling using the crop water stress index in Arizona

D. J. Garrot, M. W. Kilby, S. W. Stedman, D. D. Fangmeier, M. J. Ottman, J. M. Harper, S. H. Husman, D. T. Ray

Research output: Contribution to journalConference articlepeer-review

6 Scopus citations


Field studies were conducted on five crops in Arizona to determine relationships between crop yield and the crop water stress index (CWSI). Small plots and/or commercial fields of long and short staple cotton, wheat, pecans, and watermelon were irrigated at preselected CWSI values representing low to high crop water stress levels. When using optimum CWSI irrigation scheduling values, a lower CWSI irrigation threshold should be used based on the time expected to elapse between the last CWSI reading and the actual irrigation event.

Original languageEnglish (US)
Pages (from-to)281-286
Number of pages6
JournalASAE Publication
Issue number4-90
StatePublished - 1990
EventProceedings of the Third National Irrigation Symposium held in conjunction with the 11th Annual International Irrigation Exposition - Phoenix, AZ, USA
Duration: Oct 28 1990Nov 1 1990

ASJC Scopus subject areas

  • Engineering(all)


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