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Location

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Ontario, Canada.

Winning the battle today but may yet loose the war...

Any one have thoughts on spraying foliar with sugars as a stimulant for PM? Would be interesting to here some ideas or see some documents. I usually avoid foliar fish emulsions after July for this reason. Been wondering about the affects of sugars on PM growth.

8/31/2017 8:43:16 AM

Anamosa, IA BPIowegian@aol.com

I have added molasses to foliar feed in past years and not seen a problem, We got PM in our patch without any foliar feeding this year, I think high humidity and poor air circulation are the main causes.

8/31/2017 11:46:30 AM

Ireland

Foliar feeding should not cause Powdery Mildew if anything it would prevent infection.

8/31/2017 5:54:13 PM

nOVA sCOTIA

What causes Powdery Mildew???

8/31/2017 10:03:14 PM

nOVA sCOTIA

Is it weather (warm days cool nights)? Poor soil conditions?Foliar feeding ?? I have never had a PM problem in my patch ?

8/31/2017 10:07:57 PM

nOVA sCOTIA

So what brings on PM Russ???

8/31/2017 10:10:02 PM

Central Illinois

I think humid conditions is the biggest factor,adding fans may help and reduce soil moisture. Have a preventative systemic program going well before PM may appear

9/1/2017 8:41:24 AM

JACKSON, WISCONSIN. ; )

I used General hydro subculture B one year I had it real bad and it knocked down the PM fast sprayed every leaf that year with a pump up sprayer.. I also used it this year threw my tanks but then I got hail so... no more leafs to get powdery mildew on problem solved ... but all my pop up growth looks amazing now... leafs are over rated..lol

9/1/2017 9:05:25 AM

Ontario, Canada.

Not after a cause. The question is does sugary solutions enhance PM?

9/1/2017 9:43:01 AM

Ontario, Canada.

So When a mold spore lands on a plant leaf, it wants to send down a feeding tube to get to the water between the cells to germinate and spread.

Do sugars enhance this process? My observation is yes however I'm looking for documentation for proof.

9/1/2017 10:01:12 AM

SW Ohio

https://pdfs.semanticscholar.org/a164/c58c22a9d753b79166e2391c64cf4bafe244.pdf

9/1/2017 5:15:03 PM

Ontario, Canada.

Good link thanks so much

9/2/2017 8:19:28 AM