Thermal imaging for estimating and mapping crop water stress in cotton

E. Sela, Y. Cohen, V. Alchanatis, Y. Saranga, S. Cohen, M. Möller, M. Meron, A. Bosak, J. Tsipris, V. Orolov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

13 Scopus citations

Abstract

Water is a scarce resource and a major factor limiting crop productivity. Precision irrigation might promote water saving. In order to implement precision irrigation, efficient techniques for estimating spatial crop water status are needed. Thermal and visible images of cotton canopies were used in this study for estimating and mapping leaf water potential (LWP) and their application in cotton fields. Data were collected from cotton canopies representing a range of plant water status, phenological stages, growing seasons, species and locations. Fusion of visible and thermal images was used for detecting temperatures of sunlit canopy. The crop water stress index (CWSI) statistics were calculated using canopy temperatures and theoretical and empirical references. Models for estimating LWP from the thermal index CWSI were built. The models that were based on empirical references showed good correlation with measured LWP. The accuracy of the LWP-CWSI model was highest during the last phenological stage. The model was then used for generating LWP maps of plots with different water status.

Original languageAmerican English
Title of host publicationPrecision Agriculture 2007 - Papers Presented at the 6th European Conference on Precision Agriculture, ECPA 2007
Pages365-371
Number of pages7
StatePublished - 2007
Event6th European Conference on Precision Agriculture, ECPA 2007 - Skiathos, Greece
Duration: 3 Jun 20076 Jun 2007

Publication series

NamePrecision Agriculture 2007 - Papers Presented at the 6th European Conference on Precision Agriculture, ECPA 2007

Conference

Conference6th European Conference on Precision Agriculture, ECPA 2007
Country/TerritoryGreece
CitySkiathos
Period3/06/076/06/07

Keywords

  • CWSI
  • LWP
  • Precision irrigation
  • Thermal imagery

Fingerprint

Dive into the research topics of 'Thermal imaging for estimating and mapping crop water stress in cotton'. Together they form a unique fingerprint.

Cite this