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ive been using diluted liquid copper, applying every week for 3 weeks. what is the best remedy for this little issue. also is it true mites will only attack the leaves not the buds?![]()
I would not spray any of your buds with ANYTHING PERIOD.Go get yourself some Serenade. It can be sprayed pretty close to harvest. I was using apple cider vinegar and water which just wasn't cutting it. Sprayed serenade two times and it suppressed it well enough to get it through the rest of the way. I highly recommend this.
https://www.begonias.org/Articles/Vol72/PowderyMildew.htm said:Infection by mildew is highly dependent on temperature. Most powdery mildews have an optimum temperature of 21°C (Celio & Hausbeck, 1998). The germination of spores is less efficient at higher temperatures. Also the growth of hyphal threads will be curbed at higher temperatures.
Again PM exists in LOW HUMIDITY environments.https://www.begonias.org/Articles/Vol72/PowderyMildew.htm said:The fungal spores contain 70% liquid, so they do not need water from the outside to germinate. (Agrios, 1997). So infection is possible at low humidity, in contrast with other fungi like botrytis and rust, these need high humidity for germination and infection.
Go get yourself some Serenade. It can be sprayed pretty close to harvest. I was using apple cider vinegar and water which just wasn't cutting it. Sprayed serenade two times and it suppressed it well enough to get it through the rest of the way. I highly recommend this.