Significance of emergence date in canopy reflectance-based crop coefficient (K cr) formulation

Harikishan Jayanthi, Christopher M.U. Neale, Deepak Lal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the development of canopy reflectance-based crop coefficient (K cr), the soil adjusted vegetation index values of bare soil and 'effective' full cover canopy reflectances are linearly transformed using the corresponding basal (K cb) crop coefficients. This approach has been validated for alfalfa, barley, beans, corn, cotton, potato, sugar beet, and wheat. The basal (K cb) crop coefficient curve assumes uniform ideal crop growth in the field however the actual crop development calls for systematic adjustments of the K cb curve to match the actual growth profile. In the present paper, different instances of variability in actual crop growth are presented. The corresponding influence on the end points of K cb-SAVI linear transformation has been studied using the actual seasonal crop canopy reflectance curves of beans, potato, and sugar beet crops. This data was collected as a part of a multi-year research study towards development of corresponding canopy reflectance-based crop coefficients (K cr), Kimberly, Idaho during 1998 and 1999 seasons.

Original languageEnglish (US)
Title of host publicationAmerican Society for Photogrammetry and Remote Sensing - 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005
Pages38-49
Number of pages12
StatePublished - 2006
Externally publishedYes
Event20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005 - Weslaco, TX, United States
Duration: Oct 4 2005Oct 5 2005

Publication series

NameAmerican Society for Photogrammetry and Remote Sensing - 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005

Conference

Conference20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005
Country/TerritoryUnited States
CityWeslaco, TX
Period10/4/0510/5/05

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Information Systems

Fingerprint

Dive into the research topics of 'Significance of emergence date in canopy reflectance-based crop coefficient (K cr) formulation'. Together they form a unique fingerprint.

Cite this