Determining irrigation management zones in precision agriculture using the water deficit index at high spatial resolutions

P. D. Colaizzi, C. Y. Choi, P. M. Waller, E. M. Barnes, T. R. Clarke

Research output: Contribution to conferencePaper

Abstract

A method using the Water Deficit Index (WDI) as a guide to determining irrigation management zones and reducing soil samples needed to characterize plant available water is proposed. The WDI is an expansion of the Crop Water Stress Index (CWSI) where soil background under partial canopy cover is accounted for. WDI maps did not appear similar to a map of plant available water; thus, it had limitations in defining irrigation management zones. A WDI map generated four days after an irrigation did provide a suitable guide for soil sampling locations. Point locations where soil plant available water was known could be selectively reduced by 75% using the WDI map with only an average error of 0.08 cm, and error was within 10% for 98% of the field area.

Original languageEnglish (US)
Pages2635-2656
Number of pages22
StatePublished - Dec 1 2000
Event2000 ASAE Annual International Meeting, Technical Papers: Engineering Solutions for a New Century - Milwaukee, WI., United States
Duration: Jul 9 2000Jul 12 2000

Other

Other2000 ASAE Annual International Meeting, Technical Papers: Engineering Solutions for a New Century
CountryUnited States
CityMilwaukee, WI.
Period7/9/007/12/00

    Fingerprint

Keywords

  • Irrigation management
  • Precision agriculture
  • Remote sensing
  • Water deficit index

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Colaizzi, P. D., Choi, C. Y., Waller, P. M., Barnes, E. M., & Clarke, T. R. (2000). Determining irrigation management zones in precision agriculture using the water deficit index at high spatial resolutions. 2635-2656. Paper presented at 2000 ASAE Annual International Meeting, Technical Papers: Engineering Solutions for a New Century, Milwaukee, WI., United States.