<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Thanks, I was more wondering how close to try and get to the infection period due sometime tomorrow morning. We are mostly</div><div id="AppleMailSignature">in bloom with some varieties nearly complete petal fall and others (honeycrisp) at full bloom. There are very few flowers still to open and I expect that this will be the only strep spray necessary. The forecast is slight chance of showers daily going forward.<br><br>Sent from my iPhone</div><div><br>On May 21, 2017, at 2:13 PM, Vincent Philion <vincent.philion@.<a href="http://qc.ca">qc.ca</a>> wrote:<br><br></div><blockquote type="cite"><div>
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Hi all,
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<div class="">My two cents:</div>
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<div class="">Although streptomycin is degraded by light, this doesn’t really matter: For two to four days, the antibiotic keeps bacterial population at low levels on sprayed flowers.</div>
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<div class="">Once it’s degraded, the flower is also 2 to 4 days older and there is simply not enough time left for the bacteria to multiply back to detrimental levels and infect.</div>
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<div class="">Pusey demonstrated quite well that as flower age, they carry less bacteria and become increasingly more difficult to infect.</div>
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<div class="">Bottom line: Opened flowers that are sprayed stay protected for the life of that flower.</div>
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<div class="">As Quan underlined, you should mostly concentrate on flowers unopened at spraying time:</div>
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<div class="">1) How many flowers weren’t open on the last strep spray?</div>
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<div class="">2) Will the weather for these flowers be conducive for bacteria multiplication and infection?</div>
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<div class="">If so, then you need to consider additional sprays for unsprayed flowers.</div>
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<div class="">Trapman and myself developed RIMpro-Erwinia to help manage which flowers are at risk and at need for a spray. This model is very different from Cougar and Maryblyt and is proving more reliable.</div>
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<div class=""><span style="text-align: -webkit-auto; font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal; font-family: Verdana; font-size: 12px; orphans: 2; widows: 2;" class="">Vincent
Philion, agr., M.Sc.</span><br style="font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; line-height: normal;" class="">
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(pomiculture)</span></div>
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<span style="font-size: 12px; font-family: Verdana;" class="">Institut de recherche et de développement en agro-environnement</span></div>
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<font face="Verdana" class=""><span style="font-size: 12px;" class="">Research and Development Institute for the Agri-Environment</span></font></div>
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<a href="http://www.irda.qc.ca/" class="">www.irda.qc.ca</a></div>
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