<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi!<div class=""><br class=""></div><div class=""><div><blockquote type="cite" class=""><div class=""><div class="WordSection1" style="page: WordSection1; font-family: Helvetica; font-size: 16px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-family: Calibri, sans-serif; background-color: white; background-position: initial initial; background-repeat: initial initial;" class=""><o:p class=""> </o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif;" class=""><span style="font-family: Calibri, sans-serif; background-color: white; background-position: initial initial; background-repeat: initial initial;" class="">How do wetting events influence the model? For example, Cougar blight only uses accumulations of degree hours and status of fire blight in the orchard the previous seasons.<span class="Apple-converted-space"> </span></span></div></div></div></blockquote><div><br class=""></div></div>A short wetting event is necessary for infection, bacteria need to move from the flower stigma to the nectarthodes. Detecting it is not easy (ex: dew), so some programs (like Cougar) don’t include it. But wetness is still necessary. </div></body></html>