Organic treatment against pests and fungus in Zone 9a
Khalid Waleed (zone 9b Isb)
6 years ago
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6 years agolast modified: 6 years agojessjennings0 zone 10b
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How To Get Rid Of Fungus Spores
Comments (14)To back up what you added JJJFrisco, I found this: "Researchers in Brazil were cited as saying that milk has the makings of an ideal fungicide for protecting organically grown cucumbers and other vegetables. It attacks a mould known as powdery mildew, which is a major problem for organic farmers scrambling to meet the growing demand for chemical-free vegetables. The mould, Sphaerotheca fuliginea, appears as a powdery white growth on the leaves of cucumbers and courgettes (zucchini). It damages the plants by causing the leaves to shrivel up. At present, only chemical fungicides are available. Milk's fungicidal powers were discovered by Wagner Bettiol of the environmental laboratory of Embrapa, the Brazilian Agricultural Research Corporation, in Jaguariuna, north of Sao Paulo. Bettiol, who was looking for cheap ways to control plant pests, observed that byproducts from milk-processing factories killed powdery mildew on courgettes. So he decided to simply spray fresh milk on the plants to see if it had the same effect. To his surprise, he found that it did. In fact, spraying heavily infected plants twice a week with a mixture of one part cow's milk to nine parts water was at least as good at stopping mildew as the chemical fungicides fenarimol and benomyl, Bettiol discovered. In many cases, milk was both faster and more effective. After two to three weeks of spraying with milk, the area of leaves infected was in some cases only a sixth or less of the area affected on plants treated with chemical fungicide." I wonder is spraying 100% milk would have the same effects....See Moreorganic treatment for blackspot
Comments (42)Limestone is a strong-buffer, very effective against fungi. Found a link on Bordeaux mixture sold commercially to control fungal diseases. The homemade stuff is "to prepare a gallon amount of a 4-4-50 Bordeaux Mixture spray, measure out 6 ý teaspoons of copper sulfate and 3 tablespoons of hydrated lime." I prefer limestone as fungicide, since it's lowest in salt. My clay is dolomitic-limestone clay, high in magnesium. Dolomitic Limestone provides 25% calcium and 10% magnesium, salt index 0.8. Calcitic limestone provides 36% calcium when the rain water (pH 5.6) breaks it down, low salt index 4.7. Gypsum provides 22% calcium, 17% sulfur, with salt index of 8.1, used to de-salt sodic soil, also to neutralize bicarbonates in alkaline tap water. Lime sulfur was used in the old days as a fungicide, pH over 11.5, very caustic. Lime sulfur is made by reacting calcium hydroxide with sulfur. Below is my neighbor's hybrid tea rose, very clean, mulched with limestone & red lava plus gray rocks, picture taken in humid weather. She doesn't spray, but uses soluble fertilizer. Here is a link that might be useful: Mississipi State on Bordeaux fungicide...See MoreMy Roses in Zone 9a
Comments (193)Here I am again staring at your lovely roses, and the best rose photography I've ever seen.... Whisky Mac sigh.... the Dark Prince...Sharifa Asma, so many... Khalid you wrote: During previous years, I used to prune all my roses at one time but now I have decided that I will only prune those roses which show the signs for hibernation. Otherwise, I let them grow and finally prune them on 15 January Due to the rust I had I already pruned a few but not a full-prune. Did you do a full-prune with your roses, after they stopped blooming? I was thinking to do that a bit later on, closer to spring, but definitely to cut away a lot of canes, to prevent the rust problem....and with spring 2 months away. I can see the value of not allowing diseases to over winter....See MorePests and Diseases during fall, Zone 9b Islamabad
Comments (31)Made a huge bouquet of Lemon Spice this morning and found a lot of ants in one of the blooms. VV, was that you that had ants eating your First Crush? What did you do? The ants might eat my new green lacewing eggs also and I need them for the aphids! Khalid, yours is a timely post for me! I haven't seen mildew at all and this morning I see what appears to be mildew on the new plants that I bought from Home Depot. They are my first grafted ones and were so inexpensive that I couldn't resist. I'm also wondering if it could be some sort of fungicide oozing out of the leaves? I questioned one of the nurseries about that when some arrived looking that way last fall and they said that it was fungicide, which I wasn't thrilled about. I've had these for two weeks though and it just appeared. Might try some milk on them also! When I did it last year, I sprayed every few days but not sure what the proper protocol is....See MoreKhalid Waleed (zone 9b Isb)
6 years agoSamuel Adirondack NY 4b5a
6 years agolast modified: 6 years agoKhalid Waleed (zone 9b Isb)
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