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Len Coop
Assoc. Dir. Decision Support Systems
Oregon IPM Center
Oregon State University
Our disease model system accesses hourly and sub-hourly data from numerous real-time and archival weather stations (>33,000 stations, 2021) to compute a variety of plant disease risk and horticultural models. Currently the following models are available:
Use these models with caution. Please see our Disclaimer.
if ( $lfwetness < 1 ) { $Anomoistcount++; $ADH = 0; if ( $Anomoistcount > 8.8 ) { $AcumDH = 0 } } else { $Anomoistcount = 0; if ( $temp < 32 ) { $ADH = 0 } else { if ( $temp > 66 ) { $ADH = 66 - 30 } else { $ADH = $temp - 30 } $AcumDH += $ADH; } } if ( $AcumDH < 175 ) { $Alabel = $gre . "no app_scab" . $stp } if ( $AcumDH >= 175 ) { $Alabel = $yel . "scab near " . $stp } if ( $AcumDH > 204 ) { $Alabel = $red . "APPLE SCAB!" . $stp } if ( $AcumDH > 275 ) { $Alabel = $red . "SCAB cycle!" . $stp }
if ( $lfwetness < 1 ) { $Pnomoistcount++; $PDH = 0; if ( $Pnomoistcount > 11.8 ) { $PcumDH = 0 } } else { $Pnomoistcount = 0; if ( $temp < 32 ) { $PDH = 0 } else { if ( $temp > 66 ) { $PDH = 66 - 32 } else { $PDH = $temp - 32 } $PcumDH += $PDH; } } if ( $PcumDH < 250 ) { $Plabel = $gre . "no pearscab" . $stp } if ( $PcumDH >= 250 ) { $Plabel = $yel . "scab near " . $stp } if ( $PcumDH > 320 ) { $Plabel = $red . "PEAR SCAB! " . $stp } if ( $PcumDH > 350 ) { $Plabel = $red . "SCAB cycle!" . $stp }