Powdery Mildew Cures

[caddis]

Quote:

No sir I have yet to encounter that one, but have found that Purple Kush plants sprayed at 4 weeks will start to show signs of pm again before they reached 8 weeks with meltatox. Peace GS

So within a month it came back? Is that with only one treatment? Here I thought that stuff was the bees knees....

[spaceman]

much better having a monthly treatment then having to spray your whole room every 3 or 4 days like most remedies,and some planties last longer some are touchy to the pm thats for sure.,.,

[thaistik]

I make a mixture of 1/3 tsp each of clove, sesame, and cinnamon oils; 1 tbs of potassium bicarbonate; 6 tbs of vegetable glycerin (for a humectant); enough dish soap to take the oil film off the surface (for surfactant). Each of the oils and the K bicarb are effective in treating PM organically. This is very similar to Ed Rosenthal's Zero Tolerance fungicide. I've used it up to a week before harvest without any residual effects. Here's a good fact sheet about PM from Cornell U http://plantclinic.cornell.edu/FactS...ry/powdery.htm

[caddis]

[quote][0086]Disease severity was assessed on days 4, 7, 11, 19, and 26 on the first four leaves from the top of 20 plants per treatment (FIG. 4). On days 4, 11 and 19, disease severity was monitored just before the treatments. Results from this large-scale experiment provided additional evidence that the garlic-chitosan composition controlled efficiently rose powdery mildew even at a severe stage of the disease. Interestingly, the composition appeared more efficient than the fungicide MELTATOX

[Lundin]

chitosan eh?

[Springs]

I'm gearing up for battle, and the fungi isnt going to win!

The line up so far is,

- well blended garlic
- Chlorine dioxide(MMS)

On the way,

- Chitosan, cant find GH Chi or groteks Rage so im going to go with either pure chitosan or a product called EMPLOY(formerly Messenger)
- Various health promoting herbs such as comfrey, stinging nettles, chamomile, whatever else is around and good!
- Serenade(bacteria)
- other anaerobic tea's
-Meltatox for the stubborn

So far the garlic has done really well, just used it to test dilution strength with spot spraying, been 4 days of non visable infection on 75% of the area sprayed.

The ClO2 was applied yesterday with less positive results than the garlic, so I will increase the potency and try again, different application rates for different plants, will spray some everyday with a lower PPM count and see whats what.

At this point I cant make the trials very controlled, the main point is to get rid of and prevent further and future infection, I hope with using many solutions there will be very little resistance to be built up.

Ill update as things progress.

[Lundin]

excellent
thanks for the good work

[Springs]

no problemo!

Forgot to add, Azamax, GH's neem based extract, also have had promising initial results.

Heres an interesting link about ClO2, and H2O2 about:

Quote:

The use of disinfectants in a foliar disease management program will only be possible if the rate of disinfectant that is required to kill pathogen propagules does not cause injury to the plant. The objective of this research was to evaluate the potential phytotoxicity associated with foliar applications of chlorine and hydrogen dioxides across a range of concentrations that included and exceeded rates of these materials expected to kill pathogen propagules.

http://www.plantmanagementnetwork.or...003/disinfect/


the whole thing for posterity:
(Click the link for proper tables and pics!
[quote]Toxicity Responses of Herbaceous and Woody Ornamental Plants to Chlorine and Hydrogen Dioxides

W. E. Copes, USDA-ARS Small Fruit Experiment Station, Poplarville, MS 39470; G. A. Chastagner and R. L. Hummel, Research and Extension Center, Washington State University, Puyallup 98371

Corresponding author: Warren E. Copes. wcopes@ars.usda.gov

Copes, W. E., Chastagner, G. A., and Hummel, R. L. 2003. Toxicity responses of herbaceous and woody ornamental plants to chlorine and hydrogen dioxides. Online. Plant Health Progress doi:10.1094/PHP-2003-0311-01-RS.

Abstract
Regular and excessive rates of chlorine dioxide (ClO2) and hydrogen dioxide (H2O2) were sprayed five times at 3-day intervals on eight bedding plant and nine shrub species to determine if plant damage would result. Marketability was judged to be reduced if >4% surface area of leaves and/or flowers were adversely affected. Rates of 5 and 50 ppm ClO2 and 900 and 2700 ppm H2O2 did not damage most plants tested and will likely control most common pathogen propagules. Rates of 100 ppm ClO2 and 5400 ppm H2O2 did not damage most plants tested if sprayed less than four consecutive times and should control some of the more chemical-tolerant pathogens.

Introduction
Ornamental plant growers routinely use disinfectants to kill pathogen propagules on inert surfaces. Also, bleach products have been used for many years to disinfect surfaces of cuttings from woody plants. The addition of quaternary ammonium compounds (QAC) can extend the vase-life of chrysanthemum flowers (5). QAC products have also been applied directly to plants during production. The use of disinfectants in ornamental plant production is currently limited by the lack of data on efficacy, residual activity, and potential of plant damage.
Disinfectants kill fungal inoculum (spores, mycelia, sporangia, etc.) and bacterial cells by direct contact and provide no systemic nor residual protection. Disinfectants are active for only minutes (depending on chemical reactions with water properties and surfaces [i.e., demand load], volatilization loss of the active chemical, and evaporative drying of the disinfectant from a surface). Pathogen propagules contacted at the time of application are killed but propagules that arrive hours or even minutes after the disinfectant has dried or dissipated are unaffected.
Fungicide and bactericide spray practices have been developed over many years of scientific tests and commercial usage. A very limited research base currently exists to support recommendations for spray intervals for disinfectants or for specific strategies to alternate fungicide, bactericide, and disinfectant applications for the management of diseases on ornamental plants. ZeroTol (27% a.i. hydrogen dioxide [H2O2]) is currently labeled and being used as a pre-plant dip or foliar spray on greenhouse and field ornamental plants, cut flowers, and bare-root nursery stock (EPA Registration No. 70299-1). The 2002 ZeroTol label lists rates of 53 to 264 ppm H2O2 in mist propagation systems, 530 ppm H2O2 in treatment of cut flowers, 1050 ppm H2O2 for preventative foliar applications under greenhouse and field conditions, 2640 ppm H2O2 for curative foliar applications and in treatment of bare-root nursery stock, and 5270 ppm H2O2 in treatment of seed beds and soil.
Chlorine dioxide (ClO2) is another disinfectant with potential for direct application to plants. It is registered for use in fruit and vegetable processing lines (EPA Reg. No. 5382-43-43553). It is labeled at 3 ppm ClO2 on cut and peeled fruits and vegetables and with no rate restriction on raw agricultural products with the stipulation that produce be rinsed with water after treatment. Chastagner and Riley (2) showed that ClO2 was an effective replacement for formaldehyde in preventing the spread of Fusarium basal rot during the hot water treatment of daffodil bulbs. No adverse growth effects were noted on bulbs that had received a 4-hour-long dip at 10 ppm ClO2. Carrillo et al. (1) showed that five applications at 0.52 ppm ClO2 did not harm seedlings of radish (Raphanus sativus) cv. Champion and lettuce (Lactuca sativa) cv. Great Lakes 118. A single application of ClO2 at 1.04 ppm also had no negative effect, while five applications had only a small adverse effect from which plants recovered. A single application at 26 ppm ClO2 water caused a slight reduction in growth, and five applications at 3-day intervals resulted in growth reduction and leaf chlorosis (1).
The use of disinfectants in a foliar disease management program will only be possible if the rate of disinfectant that is required to kill pathogen propagules does not cause injury to the plant. The objective of this research was to evaluate the potential phytotoxicity associated with foliar applications of chlorine and hydrogen dioxides across a range of concentrations that included and exceeded rates of these materials expected to kill pathogen propagules.

Plant Care
Experiments were performed in a greenhouse with temperatures between 70

[Springs]

15 drops of activated MMS(Chlorine Dioxide) diluted with 250ml water, will burn cannabis, the same diluted in 500ml did not...

The few I sprayed with the 250ml dilution had varying levels of damage, the worst has perhaps 45% necrosis on the bottom 2/3 of the plant, the top 1/3 appears undamaged, this particular plant(a SPGxChinese) had the worst infection of powdery of all plants, it is the only plant to be 100% sterilized after 48hrs.

The powdery was knocked back on the 3 other test plants on average 70-90% after 2 sprays separated 24 hours apart, first 500ml dilution second 250ml, avg plant damage(necotic spots/tips) under 5% for these 3.


Next will be an inbetween dilution spaced 3 or 4 days apart, with a health cocktail spray inbetween, not much powdery left though.

Dont have other products yet, which are more for regular regiment and preventative rather than cure, but will update with their use later.

What? Do all the girls have pm??????

[Springs]

Quote:

Originally Posted by The disclosure

What? Do all the girls have pm??????

No no , just a few of the prone ones, its under control and on the way out!

[Springs]

Just received a Harpin product, EMPLOY, supposed to trigger immune response in plants to prevent disease etc. Similar action to chitosan.

Ive been using milk at 20 - 25% and 2 tsp of baking soda per liter, seems to work well though, I had an LA Con cut that was the worst off 30% covered, 4 days later and she's still clean. Hoping with the use of the EMPLOY a long with some potassium bicarb will do the trick permanently! If not I may have to whip out some meltatox.

die powdery die!

[c-ray]

so I just had some excellent results spraying some plants that were getting a nice powdery infection with a little concoction I just made up:

to one liter of chlorine-free water I add:
50 ml of San-J organic gluten free tamari sauce
50 ml of AEM (Activated Essential Microorganisms)
and a dab of good soap (a wetting agent)

one spray and the powdery went away, seriously, sprayed like 2 weeks ago and have had no more powdery re-appear

[Green Supreme]

Cool thanks for sharing. Just saw some fellow commenting on another site commenting on the efficiency of a product called eagle 20, never hearda it. Peace GS

[c-ray]

http://www.dowagro.com/turf/prod/eagle.htm ^^

got to wonder about the toxicity since it is only registered for use on ornamentals

[Green Supreme]

Can youy mix be sprayed in flower? and if so how far in? Peace GS

[c-ray]

I haven't tried it in flower but I would say it is pretty safe, probably gets fully absorbed by the plant

[dusty]

you gotta be crazy to use eagle 20 on cananbis...fuck man...

check out oxidate...

[c-ray]

agreed

http://www.biosafesystems.com/product_oxidate.asp

[spaceman]

eagle 20 nonononononono!

[Bram]

i thought it make you fly with the eagles when you smoke it tho

[c-ray]

diy acidic water generator

[spaceman]

http://naturalindustries.com/commerc...tinovateAG.htm
wonder if anyone had luck with these guys.,.,

[otto]

perhaps instead of topical remedies you need to think about what the plants are eating.................a tough immune system is the best solution......

[spaceman]

yepp thats the idea of chitosan but to say truthfully in theis climate powdery is always coming back pn clones so is best to have a preventative program in place caurse it will come back out here.,.,.

[otto]

you guys have probably heard of this before, but i'm copy pasting it anyway for those who have never heard of this or tried it........

'Wagner Bettiol, a scientist in Brazil found that using milk will actually control this powdery mildew. Yes, normal milk will actually control powdery mildew and contains a natural foliar fertilizer, boosting the plant's immune system in the process. Bettiol found that a mixture of at least 10% milk mixed with 90% water will significantly reduce the severity of powdery mildew when sprayed weekly on the plant. Scientists are still baffled as to why this powdery mildew is actually cured from just using milk. Some believe it might just be to the fact that most milk contains natural salts and amino acids that acts like a natural germicide."