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Optimal length of leys in an area with winter damage problems
Author(s) -
Lien G.,
Kristensen A. R.,
Hegrenes A.,
Hardaker J. B.
Publication year - 2003
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1046/j.1365-2494.2003.00367.x
Subject(s) - software , yield (engineering) , kalman filter , computer science , environmental science , process (computing) , agricultural engineering , operations research , mathematics , engineering , artificial intelligence , materials science , metallurgy , programming language , operating system
A model for investigation of the optimal economic life cycle of grass leys with winter damage problems in northern Norway and the threshold of winter damage before it is profitable to re- seed grasses is presented. A 2-level hierarchic Markov process has been constructed using the MLHMP software. The model takes uncertainty concerning the yield potential, damage estimation and weather dependent random fluctuations into account. A Kalman filter technique is used for updating of knowledge on yield potential and damage level.