THanks, argo.

Here's a link from the same site detailing the use of copper soap on vegetables and the potential environmental impact. (It claims that as a micro nute, copper can stimulate plant growth and that phytotoxicity is a concern mostly for perennial gardens.)

https://www.umassvegetable.org/docume...erJune2010.pdf

lw

[LazLo]

In an effort to try a more organic approach than using fungicide, I used a 3% solution of hydrogen peroxide as a foliar spray and added to water to act as systemic. 1 tsp per 16 oz spray and 1/4 cup per gallon of water. Did that on Aug 16 and after checking on the girls today, it apparently worked or the shit ran its course. No more dead or dying leaves.

Found this chart but used less than the recommended amount.

To spray on sick or fungusy plants:
TO THIS AMOUNT OF WATER ADD THIS AMOUNT OF 3% HYDROGEN PEROXIDE

1 cup add 1 tablespoon
1 pint add 2 tablespoons
1 quart add 1/4 cup
1 gallon add 1 cup

Hope this helps others with the same issue.

[Dorje113]

Laz, hope so.... I can tell you the Septoria(?) on one of my plants is not affected by Serenade, Copper Soap, or pH UP (foliared at 8.5-9). It is defoliating my plant from the bottom up.... no big deal indoors as I lollipop heavily anyway, but if it gets near the top of the plant it's going to be bad... I need to stop it NOW.

What strain of yours is getting hit badly, dorje?

lw

[Dorje113]

Originally Posted by el dub

What strain of yours is getting hit badly, dorje?

lw

It's a clone of Pineapple Express i got locally. The other 2 in my garden are Blowfish and White Rhino, they are not infected even though the plants are right next to each other. I don't see this as a normal condition, I think the Pineapple just has low immunity for whatever reason. But... it is bad and kills leaves pretty quickly. I keep on removing affected leaves, but in another week it's going to really fuck things up if I can't stop it... there's going to be no more fan leaves left.

[ghost of sage]

Where do you get this 3% hydrogen peroxide???is it the kind at the pharmacy or is it the 35% food grade diluted down??

[hamstring]

OK I thought I would add some more pics of what leaf spot in my area looks like. Also compare to what DS posted before because this is most likely the same disease although it does express itself differently. As you can see on most of my plants its everywhere.

A few comments tying into what others have said.

1. I did collect samples and it does seem to hit the wild cheery trees the hardest I saw many trees completely void of leaves.

2. I checked a soybean field in the lowlands and did not see enough sign to say it attacks them. I did see some sign albeit very little on areas referred to as "ponding" when it floods these areas hold water and can kill large areas of crop. I found leaf spot where the beans where near trees but other wise nothing. I assume that soybeans are either not vulnerable or the have been bred to withstand this disease.

3. I used Serenade this time as my fungicide vs. Green Cure.

[hamstring]

On this second set of pics I am focusing on the plant itself. If you read the captions you will see that the disease affects plants at a varying degree depending on strain and even phenos within the same strain. Not only that but the way it affects them is different also. My camera is shitty but the disease eventually attacks the buds also. If it doesn’t destroy the whole bud it leaves dead patches allowing mold to infect much easier. This could be a hash year for me.

This is actually the same strain BFM but since I grew from seed you have different phenos and one of them was way more disease resistant than the other.






Now each strain reacts differently the BFM keeps its leaves until they die and fall off where as the WW looses its leaves shortly after they contract the disease. Too bad there isnt a plant in these pics that is less than 6ft.






Here is a 10ft high GHS WW the biggest strain I have grown. The tree next to it is over 20ft. I hope it gives a size perspective.

[hamstring]

Here is a second plot it contains GGX Skunk and GGXBluebonic. Some of these plants have a chance depending on weather some are as good as gone. What I noticed at this site because there are fewer trees is that if under a tree they contract the disease worse.

In my OPINION the disease in my area always starts from the ground in the undergrowth but once it affects the trees the contaminate anything below them because of the contaminated water dripping off there leaves onto the plants.

Just to emphasize this I don’t think the disease starts in the trees they are more of a carrier.

DS, all: I checked and found my last GHS WW covered with the tiny yellow dots/holes from bottom up. This plant is nearly done flowering (it was very early and started budding in July), pistils have all changed color but trichs still mostly clear, so I decided to trim off all the shade leaves and let it go one more week because the weather is sunny and no rain, then I'll have to chop. I hope the buds survive one more week. Not quite the yield I'd hoped for. Two weeks ago there was no sign of this, then the heat and humidity went nuts.

Also found my biggest Haw Snow squashed flat and stem split 3 ways from a big deer or hippo laying on it. I taped it back together and splinted it, but it doesn't look like it will make it. It had just finished pre-flowering and stretch and was looking very good. It had 4 main branches down low from being almost completely eaten as a small plant - in the future I will reinforce these areas because they are structurally weak.

I'll be abandoning this area after this. I've had enough problems: deer, hogs, bugs, and now this shit. I need to find a better micro-climate somewhere else...