[Apple-Crop] Fireblight

How long will strep protect blossoms that were open at the time  of application? Art Kelly Kelly Orchards Acton, Maine___ apple-crop mailing list apple-crop@virtualorchard.com http://virtualorchard.com/mailman/listinfo/apple-crop

Re: [Apple-Crop] Fireblight

Step can generally last for 2-4 days without rain. As it is degradable by sun light, it lasts longer in over cast days than in sunny days. Rain can wash some off but at least strep is more systemic than other antibiotics such as tetracycline. However, as it does not penetrate into unopened

Re: [Apple-Crop] Fireblight

Hi! Once a flower opens, it needs to get contaminated by an insect and then the population needs to multiply to 100,000 before wetting, otherwise the infection is a dud. That takes 36 hrs when the conditions are perfect for the bacteria (28°C, 82°F), and considerably longer when the

Re: [Apple-Crop] Fireblight

Hi all, My two cents: 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. Once it’s degraded, the flower is also 2 to 4 days older and there is simply not enough time left

Re: [Apple-Crop] Fireblight

Thanks, I was more wondering how close to try and get to the infection period due sometime tomorrow morning. We are mostly 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

Re: [Apple-Crop] Fireblight

We didn't get the shower Thursday night so not only did I not apply strep but we were 10 days out on a scab spray so I covered up today. Sent from my iPhone > On May 21, 2017, at 9:16 PM, Glen Koehler wrote: > > Hi Art > If a flower opened at 7am on Friday May 19,