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EMERGENCY!!!! powdery mildew
- Thread starter swampdank
- Start date
G
Guest
Purchase a sulfur vaporizer or a spray on product such as
Serenade. Trim foliage 6 or more inches above the soil. Use a fan to provide air circulation at pot level, and reduce humidity.
Baking soda has Sodium (Salt) in it, not the best idea. This information is on the side panel of the Arm & Hammer baking soda box.
good luck,
tystik
Serenade. Trim foliage 6 or more inches above the soil. Use a fan to provide air circulation at pot level, and reduce humidity.
Baking soda has Sodium (Salt) in it, not the best idea. This information is on the side panel of the Arm & Hammer baking soda box.
good luck,
tystik
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thanks for the quick replies fellas.
im sitting here waiting on advice what to do.
i tried the milk thing. last crop, it worked.
TY: im afraid i dont have time to order anything like seranade. stores here suck.
Hey Quad: kelp huh? i got summa that.
its this particular strain i have. none of the others in the garden have it, but i have had issues with it in all dj short lines. they attract everything. this stuff spread so fast this time, i was shocked. i kept it to a minimum last crop, but this time i think it might murder my ladies if i dont act fast. its that bad.
i know baking soda has salt in it. but in small doses, the salt shouldnt hurt.
wheres jaykush? i think it was seawater he suggested.
im sitting here waiting on advice what to do.
i tried the milk thing. last crop, it worked.
TY: im afraid i dont have time to order anything like seranade. stores here suck.
Hey Quad: kelp huh? i got summa that.
its this particular strain i have. none of the others in the garden have it, but i have had issues with it in all dj short lines. they attract everything. this stuff spread so fast this time, i was shocked. i kept it to a minimum last crop, but this time i think it might murder my ladies if i dont act fast. its that bad.
i know baking soda has salt in it. but in small doses, the salt shouldnt hurt.
wheres jaykush? i think it was seawater he suggested.
sophisto
Member
Compost teas can help you a ton...sorry I dont have a link but I have seen disease suppression reports that clearly show the evidence as to the impact good microbials can have on inconvenient microbials...DAMN PM.....
To speak from my own experience with PM and baking soda, 1 tablespoon per gallon of baking soda is good....I would however apply it at night ( 1/2 hour before lights off)wash off the foliage the day after to prevent frying your plants, you can always repeat the process if needed......( It's usually needed)
Serenade, smells like dirty gym socks x 10 and the PM always came back ( just my experience). Copper soap sprays work ok, again wash off the foliage as this stuff has burned some plants of mine. Ed Rosenthals crud smells good but I had not so good results with it either....
In the end the best result I had was High Ph water 11-12, PH up is potassium bicarbonate sprayed just before lights off rinsed the next day and repeated for a week, daily...All of this was also done with the addition of a dehumidifier.....It worked like a champ....In a week it was gone completely and it hasnt come back in over three months.....( knock on wood)
Sulfur burners work period.....A store owner here that has giant commercial greenhouses told me he burns sulfur 1 time a week at night for 7 hours and has never had PM ever....
Hope you werent a victim of those haphazard cutters here in So CAl....A couple cloners down here spread PM across the country......Careless, and costly for many, all to make 10 bucks a slice......They should be ashamed....
To speak from my own experience with PM and baking soda, 1 tablespoon per gallon of baking soda is good....I would however apply it at night ( 1/2 hour before lights off)wash off the foliage the day after to prevent frying your plants, you can always repeat the process if needed......( It's usually needed)
Serenade, smells like dirty gym socks x 10 and the PM always came back ( just my experience). Copper soap sprays work ok, again wash off the foliage as this stuff has burned some plants of mine. Ed Rosenthals crud smells good but I had not so good results with it either....
In the end the best result I had was High Ph water 11-12, PH up is potassium bicarbonate sprayed just before lights off rinsed the next day and repeated for a week, daily...All of this was also done with the addition of a dehumidifier.....It worked like a champ....In a week it was gone completely and it hasnt come back in over three months.....( knock on wood)
Sulfur burners work period.....A store owner here that has giant commercial greenhouses told me he burns sulfur 1 time a week at night for 7 hours and has never had PM ever....
Hope you werent a victim of those haphazard cutters here in So CAl....A couple cloners down here spread PM across the country......Careless, and costly for many, all to make 10 bucks a slice......They should be ashamed....
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organick
Member
Right after watering sprinkle a top-dress of very dry fine (broken-up with hands) mulch, or other "weak" bio-matter.
here goes the explenation without a degree:
The Microbes of the top dressing compete with the microbes of the powdery mildew. The mildew has something to do with the soil (well, heck the whole enviroment), especially the top layer. Also the microbe action of the "fresh" food helps to give the plant "immunity".
Also, if Air Flow was a chick I would marry it, my next grow im trying to bring in the variable of increased and variable air-flow at flowering, if light and nutrients increase,why not air?
Thanks for keeping me thinking Swamp and others for the info.
here goes the explenation without a degree:
The Microbes of the top dressing compete with the microbes of the powdery mildew. The mildew has something to do with the soil (well, heck the whole enviroment), especially the top layer. Also the microbe action of the "fresh" food helps to give the plant "immunity".
Also, if Air Flow was a chick I would marry it, my next grow im trying to bring in the variable of increased and variable air-flow at flowering, if light and nutrients increase,why not air?
Thanks for keeping me thinking Swamp and others for the info.
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i did a heavy neem application last night. but, i need bigger guns i think. i will try the baking soda today on a test plant.
NOTE TO ALL: DJ Short strains are very susceptable to this stuff. they attract every pest possible. Although the strains are top notch, be very careful basing an entire crop on them. I have other strains in the room right next to (edit: touching) the F13s and no sign of PM on them.
I will do what i can to control this shit. wish me luck.
and thanks everybody, for helping me save my crop.
NOTE TO ALL: DJ Short strains are very susceptable to this stuff. they attract every pest possible. Although the strains are top notch, be very careful basing an entire crop on them. I have other strains in the room right next to (edit: touching) the F13s and no sign of PM on them.
I will do what i can to control this shit. wish me luck.
and thanks everybody, for helping me save my crop.
In trials I've had great results controlling PM with an aerated compost tea using vermicompost, molasses, kelp meal, pyrophyllite clay powder, rock phosphate; brewed 24 hours for bacteria.
jaykush said:
i knew you said sea water jay. i couldnt remember the dosage though. i didnt have to take it that far last time we discussed this. the milk worked fine last time.
this time, its bad. real bad.
im glad you posted the dosage in the forum so anybodywho needs it, can find it.
thanks man. going to the beach today to get some gulf water.
Suby said:No not together, pick one and run with it.
Man your grow has been a real fight between the gnats and the PM, it can only get better bro
I KNOW RIGHT? its these F13 ladies that give me problems. the rest look great. heres a pic..
note: i have determined that the curled leaves are a natural trait expressed in this line. you can see the problem in the rear of the pic.
i might have to donate this cut to an outdoor project if i cant get this under control.
Swampdank
This web site should be beneficial to you in the fight against powdery mildew.
I use the potassium bicarbonate products exclusively on both my medical indoor garden as well as outdoors. This year has been one of the wettest in decades and the mildew issues are beyond anything I can remember for at least 10 years.
On those occasions when I do not have one of the commercial products available (like when I forget to pick it up when I'm at the farm store) then I use sodium bicarbonate for the reasons discussed at the link noted above.
HTH
CC
This web site should be beneficial to you in the fight against powdery mildew.
I use the potassium bicarbonate products exclusively on both my medical indoor garden as well as outdoors. This year has been one of the wettest in decades and the mildew issues are beyond anything I can remember for at least 10 years.
On those occasions when I do not have one of the commercial products available (like when I forget to pick it up when I'm at the farm store) then I use sodium bicarbonate for the reasons discussed at the link noted above.
HTH
CC
