Information and discussion regarding garden diseases, insects and other unwelcome critters.
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#31 |
Tomatovillian™
Join Date: May 2013
Location: New Mexico
Posts: 2,052
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Doesn't Bill's bleach spray kill powdery mildew?
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#32 |
Tomatovillian™
Join Date: May 2013
Location: New Mexico
Posts: 2,052
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Doesn't Bill's bleach spray kill powdery mildew?
http://www.tomatoville.com/showthrea...t=bleach+spray |
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#33 |
Tomatovillian™
Join Date: Feb 2012
Location: Newfoundland, Canada
Posts: 6,794
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I haven't tried milk or bleach spray... I admit it, I hate to spray anything.
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#34 |
Tomatovillian™
Join Date: Feb 2016
Location: Southeastern PA
Posts: 1,420
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I have used a spray of baking soda and water for powdery mildew on squash. It works by changing the pH and making it unattractive to the organisms that cause the powdery mildew. It does not kill it, just prevents it from growing.
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#35 | |
Tomatovillian™
Join Date: May 2011
Location: Laurinburg, North Carolina, zone 7
Posts: 3,207
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I wonder also if a kefir,yogurt or buttermilk spray would be beneficial, maybe to alternate with the aspirin and compost tea? Years ago,I read a very well done journal paper about adding an aspirin or two to each planting hole and that it had a significant effect on growth and vigor of the plant,too. I haven’t tried it but I think I might start doing this. Last edited by Tracydr; July 30, 2019 at 06:11 AM. |
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#36 |
Tomatovillian™
Join Date: Sep 2009
Location: Alabama
Posts: 7,068
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I have only rarely had mildew on my tomatoes but it is a frequently a problem for squash and sometimes cucumbers. Besides using the bleach spray to kill it you can use a copper spray to help prevent it and even stop mild cases.
I had a big stand of English peas this year and they were constantly having problems with mildew and I used the bleach spray on them with success. I was afraid it might kill them but it had no affect on the healthy leaves but the mildewed ones did turn brown after spraying. Next year I am going to start spraying my peas with copper before the mildew begins and see if it will work to prevent it as it does on squash. My problem right now with something a good bit more virulent is gray mold on my black tomatoes. I have used the bleach spray once and copper once and it is under control for now but all it will take is a day or two of rain for that stuff to start again. If it does the bleach will be used at the first sign of it. The trick with all these types of things is to get it under control early and keep a close eye out for any signs of it returning and treat quickly if it does. Waiting too long with any of these types of problems only makes it much worse and less likely to have a good outcome as the spores spread fairly fast if the weather conditions are right for it. Bill |
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#37 |
Tomatovillian™
Join Date: Feb 2012
Location: Newfoundland, Canada
Posts: 6,794
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Too true about nipping the diseases before they spread. There is a daily cycle apparently and iirc common to release spores in the evening when temperature drops, but it may be different depending on the organism
![]() One thing about grey mold, which we also get here with a vengeance, is that the spent blossoms or flowers that drop are patient zero for the mold. I have found a few varieties less prone to that but in general the floral parts of tomato produce substances which are the ideal substrate for the mold. As soon as they drop unseen onto a leaf or worse yet, a stem, there it spreads and grows. So a key part of sanitation routine for us is to shake off or pick off and dispose those petal or flower drops whenever doing the pruning and tying. If that is done on a regular basis, mold is much less of a risk. The year I looked after the tomatoes at my friend's farm, I found that once a week was just right for those pruning jobs, and kept them pretty much mold free. Some varieties are extra susceptible to mold or other diseases though - I honestly have culled quite a few from my 'want to grow again' list if I find they are high maintenance. ![]() |
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#38 | |
Tomatovillian™
Join Date: Jul 2013
Location: Ontario
Posts: 3,893
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![]() I always used to rinse out my kefir jar and glasses and keep the rinse water for my tomato plants. They didn't mind at all ![]() I bought some Alka Seltzer aspirins for my tomato plants and will use them tomorrow. I hope they will appreciate it ![]() Linda |
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#39 |
Tomatovillian™
Join Date: Feb 2012
Location: Newfoundland, Canada
Posts: 6,794
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Whey from yoghurt or kefir is basically lactobacillus afaik... and that is for sure a healthy friend for plants.
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#40 |
Tomatovillian™
Join Date: Oct 2014
Location: connecticut,usa
Posts: 1,151
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I had brandywine plants in containers that had to be transplanted.
The plants were getting sun but the containers were sheltered by grass and weeds. I transplanted into bigger containers that had sun exposure for the plants and containers,in 1 week the plants had EB. I will try to salvage with the salicylic acid and a white cloth mulch. |
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#41 |
Tomatovillian™
Join Date: Oct 2014
Location: connecticut,usa
Posts: 1,151
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Soil temp was 88 degrees F which is way too high.
Trying to knock it down to see if I can recover. |
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Tags |
compost tea , early blight |
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