Estimation of Leaf Wetness Duration Using An Empirical Model

  • Kim, Kwang-Soo (Department of Agronomy, Iowa State University) ;
  • S.Elwynn Taylor (Department of Agronomy, Iowa State University) ;
  • Mark L.Gleason (Department of Plant Pathology, Iowa State University) ;
  • Kenneth J.Koehler (Department of Statistics, Iowa State University)
  • Published : 2001.06.01

Abstract

Estimation of leaf wetness duration (LWD) facilitates assessment of the likelihood of outbreaks of many crop diseases. Models that estimate LWD may be more convenient and grower-friendly than measuring it with wetness sensors. Empirical models utilizing statistical procedures such as CART (Classification and Regression Tree; Gleason et al., 1994) have estimated LWD with accuracy comparable to that of electronic sensors.(omitted)

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