White bloches spreading.. Anyone know what's happening???

Hi everyone,

I had this problem in my previous patch, but it is kinda worse with these... If anyone can help me with what is going on, would greatly appreciate it. The white bloches are worse on some leaves than others, and it is on all plants. Here is the troubleshooting form:

indoor or outdoor
E-soil, soilless, coco, aero, or hydroponic
E-specific medium: Fertile soil with pearlite and organic compost
CSL-Soil type/brand: ??
HCL-Hydro/aero/soilless system type
SCL-Anything you have added to the soil Pearlite and compost
SCLR-Soil or slab runoff pH ??
E-Water source: Hawaii tap
E-Source water pH n/a
HRT-Source water EC (if hydro)
E-Age of plant about 8 weeks
E-Type of fertilizer Botanicare Pro Bloom and Calmag
E-Rate of application (if hydro, this is your PPM number, preferably after each component is added) Half dose every other watering
E-Lighting source and distance from plant Sun
E-Air temperature (both day and night if you are running a dark period) 70-90 deg F between day/night
HD-Reservoir temperature
E-Air % Relative humidity high lately
E-Lighting schedule
E-Type of ventilation your room has Breeze
TR-Did you pre-soak your media in pH corrected solution?

Thanks for anyone's help!!

-rider

high man, i don't know if this will help but it could be powdery mildew and,
if it is then you can spray them with a 50\50 solution of milk.

i know that sounds like bs but it really works with pm, here is some info
that will explain better than i can.

Milk is a useful fungicide in the garden, and is more effective than standard chemical brands.


Researchers believe the potassium phosphate in milk boosts a plant's immune system to fight the fungi.

Where most organic gardeners use a baking soda, soap and oil solution, milk may be substituted to combat the unwanted fungus.

Preparing a Milk Solution and Spraying Schedule

The correct dilution and spraying schedule for garden plants depends on the situation and takes some trial and error.

A milk fungicide solution can range from 1 part milk to 9 parts water, to a strong, milk-only solution. A 1:1 dilution may work for a week, but a 1:8 solution requires spraying every 3 or 4 days.

Skim milk may work better than whole milk, as the higher fat milk may clog a sprayer; even reconstituted powdered milk works.

Uses for Milk Fungicide

Milk was originally used in the garden to treat powdery mildew on squash plants. It is now also commonly used on flowers such as rudebekia (Black-eyed Susans) and Begonias to cure powdery mildew.

Milk has also been used to cure Botrytis on a Cyclamen houseplant. This was applied full strength every morning (leftover breakfast milk). Rotten leaves were picked away and the plant pulled through with no more Botrytis.

Black spots and rust on roses can be controlled but not cured with milk. Fortunately, milk can prevent the spread of these fungi to other plants and new leaves. This can be very useful when bringing home a plant from the nursery and finding a black spot.


The copyright of the article Milk as a Garden Fungicide for Powdery Mildew, Botrytis, and Black Spots in Organic Gardening is owned by Deborah Turton. Permission to republish Milk as a Garden Fungicide for Powdery Mildew, Botrytis, and Black Spots in print or online must be granted by the author in writing.


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by Arzeena Hamir
Powdery Mildew

Less than 3 years ago, researchers in South America discovered a new alternative to controlling powdery mildew. Wagner Bettiol, a scientist from Brazil, found that weekly sprays of milk controlled powdery mildew in zucchini just as effectively as synthetic fungicides such as fenarimol or benomyl. Not only was milk found to be effective at controlling the disease, it also acted as a foliar fertilizer, boosting the plant's immune system.

Powdery mildew in the cucurbit family is caused by the organism Sphaerotheca Fuliginea. It is a serious disease that occurs worldwide. For decades, organic gardeners had to rely on making a spray from baking soda to control the disease. Now, instead of measuring out the baking soda and combining it with a surfactant (a "sticking" substance) of either oil or soap, gardeners need only head for their refrigerators.

In his experiments with zucchini plants, Bettiol found that a weekly spray of milk at a concentration of at least 10% (1 part milk to 9 parts water) significantly reduced the severity of powdery mildew infection on the plants by 90%. While some gardeners may be tempted to increase the concentration of milk for more control, Bettiol found that once concentrations rose above 30%, an innoccuous fungus began to grow on the plants. How does milk control powdery mildew?

Scientist aren't 100% sure how milk works to control this disease. It seems that milk is a natural germicide. In addition, it contains several naturally occurring salts and amino acids that are taken up by the plant. From previous experiments using sodium bicarbonate, potassium phosphate, and other salts, researchers have found that the disease is sensitive to these salts. It is possible then, that milk boosts the plant's immune system to prevent the disease.

Milk used around the world
The benefits of using milk to control powdery mildew haven't been isolated to Brazil. Melon growers in New Zealand are saving thousands of dollars every year by spraying their crops with milk instead of synthetic fungicides. The melon growers in New Zealand have been so successful that the wine industry is taking notice and beginning experiments using milk to control powdery mildew in grapes.

What kind of milk should be used?
In Bettiol's original experiment, fresh milk was used, straight from the cow. However, this is obviously not feasible to most home gardeners. The research work in New Zealand actually found that using skim milk was just as effective. Not only was it cheaper, but the fact that the milk had no fat content meant that there was less chance of any odours.

Wagner Bettiol's original article was published in the journal Crop Science (Vol. 18, 1999, pp. 489-92).

you can use hydrogen peroxide too. here is a link to a chart with mixing strengths. it's the second one from the top.

it does look like PM.

-shake

I tried the milk and the H202....the mildew will return within 4-5 days

Then a friend told me about GreenCure.....It works great.....10-14 interval inbetween applications.

GreenCureâ??s active ingredient is totally organic, potassium bicarbonate heres a link 8oz GreenCure Fungicide

Once you have the PM you wont get rid of it totally...its herpes for marijuana:mad: you can only keep it under control....Some strains are resistant to PM grow those strains...White widow, white rhino, Bubba kush ect.

Don't look too serious, brah.

I get da same kine bottom leaf in coco, and in DWC, outdoors.
Started when da vent opened at Hale Mau Mau.

My indoor girls are all green n healthy 'til I put em out in da acid rain.
Mebee we should thank Mdm. Pele, yah?
They still make incredible buds, and by the time they mature, all the fan leaf is gone.
Half my trim work is already done for me.

If you start seeing symptoms in the new growth, worry.

Howdy Neighbor.
Weezard

Quote:

---

If you start seeing symptoms in the new growth, worry.

---

Not true by the time you see pm its to late...I never had PM until I got a clone that had it .....it only started showing during the flower phaze of growing....during veg growth you normally wont see PM unless the conditions (environment) of your grow area permit it.

If you leave this PM untreated it will fuck up your buds....PM usually hits the lower leaves first then it will work its way up to cover the buds.

If you want to knock down this pm hit it with 1/4 cup of h202 (3 % hydrogen peroxide) mixed in a quart spray bottle of water....spray the entire plant in the morning so the buds can dry out or you can get bud rot

Quote:

---

Originally Posted by VapedG13

Not true by the time you see pm its to late...I never had PM until I got a clone that had it .....it only started showing during the flower phaze of growing....during veg growth you normally wont see PM

All this is true.
And it's all based on the assumtion that it is, indeed PM.

Does not look like it to me.
No wanna treat plants for sometin' they no got, yah?
I also flower indoors, where PM would wipe me out.
No sign of it.:cool:

If you leave this PM untreated it will fuck up your buds....PM usually hits the lower leaves first then it will work it way up to cover the buds.

Also, quite correct, if it's PM.

If you want to knock down this pm hit it with 1/4 cup of h202 (3 % hydrogen peroxide) mixed in a quart spray bottle of water....spray the entire plant in the morning so the buds can dry out or you can get bud rot

---

We live Hawaii.
The powdery mildew on da dry side here is rare.
Wet-side, ah dunno.
N. Ca. is many times worse, mildew-wise.

All I'm sayin' here, is I have seen this on the fan leaves since a new gas vent opened on Mauna Loa.
The VOG is thick and the rain tastes sour.
(When our rain gets like that, it actually kills PM.
Unfortunately, it's also hard on the patient.)

The 2 girls under the porch umbrella, and the inside bloomers show no sign. Nice healthy leaves.
The rained-on ladies all have those same symptoms, and I find no trace of PM .

That is what I have observed.
Make of it what you will.:)

Aloha,
Weezard

I thank everyone (Vaped, Headshake, and Weezard) for helping me try to figure this problem out, and figure out a cure. I hope it is just the vog from the new vent opening, but I do feel like I should at least try something. I am on the west side after all. I had also seen tiny gray mites on the bottom of the leaves that were infected, and the infection is spreading to the leaves of the lower buds. I think I am going to try the 1/4 parts milk and 3/4 parts water idea. If anyone can tell me why this method would be a bad idea, please let me know.
Thanks again everyone,

rider

Quote:

---

Originally Posted by justanotherbozo

high man, i don't know if this will help but it could be powdery mildew and,
if it is then you can spray them with a 50\50 solution of milk.

i know that sounds like bs but it really works with pm, here is some info
that will explain better than i can.

Milk is a useful fungicide in the garden, and is more effective than standard chemical brands.


Researchers believe the potassium phosphate in milk boosts a plant's immune system to fight the fungi.

Where most organic gardeners use a baking soda, soap and oil solution, milk may be substituted to combat the unwanted fungus.

Preparing a Milk Solution and Spraying Schedule

The correct dilution and spraying schedule for garden plants depends on the situation and takes some trial and error.

A milk fungicide solution can range from 1 part milk to 9 parts water, to a strong, milk-only solution. A 1:1 dilution may work for a week, but a 1:8 solution requires spraying every 3 or 4 days.

Skim milk may work better than whole milk, as the higher fat milk may clog a sprayer; even reconstituted powdered milk works.

Uses for Milk Fungicide

Milk was originally used in the garden to treat powdery mildew on squash plants. It is now also commonly used on flowers such as rudebekia (Black-eyed Susans) and Begonias to cure powdery mildew.

Milk has also been used to cure Botrytis on a Cyclamen houseplant. This was applied full strength every morning (leftover breakfast milk). Rotten leaves were picked away and the plant pulled through with no more Botrytis.

Black spots and rust on roses can be controlled but not cured with milk. Fortunately, milk can prevent the spread of these fungi to other plants and new leaves. This can be very useful when bringing home a plant from the nursery and finding a black spot.


The copyright of the article Milk as a Garden Fungicide for Powdery Mildew, Botrytis, and Black Spots in Organic Gardening is owned by Deborah Turton. Permission to republish Milk as a Garden Fungicide for Powdery Mildew, Botrytis, and Black Spots in print or online must be granted by the author in writing.


-------------------------------------------------------------------------------


by Arzeena Hamir
Powdery Mildew

Less than 3 years ago, researchers in South America discovered a new alternative to controlling powdery mildew. Wagner Bettiol, a scientist from Brazil, found that weekly sprays of milk controlled powdery mildew in zucchini just as effectively as synthetic fungicides such as fenarimol or benomyl. Not only was milk found to be effective at controlling the disease, it also acted as a foliar fertilizer, boosting the plant's immune system.

Powdery mildew in the cucurbit family is caused by the organism Sphaerotheca Fuliginea. It is a serious disease that occurs worldwide. For decades, organic gardeners had to rely on making a spray from baking soda to control the disease. Now, instead of measuring out the baking soda and combining it with a surfactant (a "sticking" substance) of either oil or soap, gardeners need only head for their refrigerators.

In his experiments with zucchini plants, Bettiol found that a weekly spray of milk at a concentration of at least 10% (1 part milk to 9 parts water) significantly reduced the severity of powdery mildew infection on the plants by 90%. While some gardeners may be tempted to increase the concentration of milk for more control, Bettiol found that once concentrations rose above 30%, an innoccuous fungus began to grow on the plants. How does milk control powdery mildew?

Scientist aren't 100% sure how milk works to control this disease. It seems that milk is a natural germicide. In addition, it contains several naturally occurring salts and amino acids that are taken up by the plant. From previous experiments using sodium bicarbonate, potassium phosphate, and other salts, researchers have found that the disease is sensitive to these salts. It is possible then, that milk boosts the plant's immune system to prevent the disease.

Milk used around the world
The benefits of using milk to control powdery mildew haven't been isolated to Brazil. Melon growers in New Zealand are saving thousands of dollars every year by spraying their crops with milk instead of synthetic fungicides. The melon growers in New Zealand have been so successful that the wine industry is taking notice and beginning experiments using milk to control powdery mildew in grapes.

What kind of milk should be used?
In Bettiol's original experiment, fresh milk was used, straight from the cow. However, this is obviously not feasible to most home gardeners. The research work in New Zealand actually found that using skim milk was just as effective. Not only was it cheaper, but the fact that the milk had no fat content meant that there was less chance of any odours.

Wagner Bettiol's original article was published in the journal Crop Science (Vol. 18, 1999, pp. 489-92).

---

Quote:

---

Originally Posted by riderinthedark4

I thank everyone (Vaped, Headshake, and Weezard) for helping me try to figure this problem out, and figure out a cure. I hope it is just the vog from the new vent opening, but I do feel like I should at least try something. I am on the west side after all. I had also seen tiny gray mites on the bottom of the leaves that were infected, and the infection is spreading to the leaves of the lower buds. I think I am going to try the 1/4 parts milk and 3/4 parts water idea. If anyone can tell me why this method would be a bad idea, please let me know.
Thanks again everyone,

rider

---

you're welcome.

Quote:

---

Originally Posted by riderinthedark4

the infection is spreading to the leaves of the lower buds. I think I am going to try the 1/4 parts milk and 3/4 parts water idea. If anyone can tell me why this method would be a bad idea, please let me know.

rider

---

Bro the milk will work just like the h202 will work.... but you will see after about 5 days the PM will come back.....thats why I recomended the GreenCure because it has up to a 10-14 day residual effect on the plants....you will be spraying twice as often with the milk...

The choice is yours....spray once every 5 days or once every 10-14 days...6 times a month or twice.

If you only have the one plant no problems spray everday...but if your like me and have alot of plants spraying your plants will take hours...less worktime is better.


Here a photo of what my PM looked like

Quote:

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Originally Posted by justanotherbozo

you're welcome.

---

I'm sorry man I didn't mean to leave you out, you're the one that gave me the idea! Thank you very much and it is so cool of you to help the inexperienced out.

I'll update after I see results from the milk.

Thanks again,

rider

Quote:

---

Originally Posted by riderinthedark4

I'm sorry man I didn't mean to leave you out, you're the one that gave me the idea! Thank you very much and it is so cool of you to help the inexperienced out.

I'll update after I see results from the milk.

Thanks again,

rider

---

sorry i seemed out of joint man, lotta shit happenin' in the real if you
know what i mean.

anyway, you should know that the milk won't eradicate the mildew, the
spores are still present so if the conditions are right, the mildew will re-
appear. ...what i do is to just add milk to my foliar spray every 5 days
or so and that keeps the mildew in check.

at some point i'll probably have to stop my cycle and bleach the inside
of my cab to completely eliminate the mildew, and who knows what else
i'll have to do, ...so for now, i just tread water and spray my plants with
milk, lol.