Seasonal evapotranspiration estimation using canopy reflectance: A case study involving pink beans

H. Jayanthi, C. M.U. Neale, J. L. Wright

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

In the estimation of crop evapotranspiration (ET) crop coefficients are employed to simulate soil moisture in the crop root zone. Remote sensing offers an excellent means of determining near real time crop coefficients for most irrigated crops. In the absence of prior knowledge of planting, emergence and/or full effective cover dates, canopy reflectance can be used to establish the growth rate of the crop, and subsequently can be used to fractionalize the reference ET for irrigation scheduling. This paper presents the results of extending the reflectance-based crop coefficient methodology, initially developed for corn, to pink beans. Simulation results indicate that the reflectance-based coefficients follow the actual crop growth in the field, and thus can simulate the measured soil moisture content.

Original languageEnglish (US)
Pages (from-to)302-305
Number of pages4
JournalIAHS-AISH Publication
Issue number267
StatePublished - 2000
Externally publishedYes

Keywords

  • Basal crop coefficient
  • Evapotranspiration
  • Idaho
  • Kimberly
  • Pink beans
  • Reflectance-based crop coefficient
  • Root zone soil waer balance
  • Soil adjusted Vegetation Index (SAVI)

ASJC Scopus subject areas

  • Oceanography
  • Water Science and Technology

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