Why not use neem?
ckbozeman
14 years ago
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Comments (23)
justaguy2
14 years agockbozeman
14 years agoRelated Discussions
using neem in a hot climate?
Comments (20)andreajp, I have. It has been very hot here in NE AR and humid too, earlier than normal (as it was last year). I have had 'bugs' and fungus problems on groundcover(GC) roses, simplicity hedge (SH) roses, an azalea(AZ) and the garden tomatoes, peppers and cucumbers. I used neem oil extract(70%) at rate of 1oz per gal at 11AM on the SH and GC & AZ too. It was much later than I had planned since sun was already on the plants for hours but felt I had no choice. No adverse effects from that -none I could see were burns. I really soaked the plants too. The BS was *gone* in a couple of days. I repeated the application a week later but much earlier in AM since the BS returned and have done it again. Unfortunately, I will be doing it every week and after every rain ... IOW, the plants don't seem to be sensitive. The garden tomatoes had (red) aphids and ithink whitefiles as well as some kind of fungus. The garden got sprayed in the (very) late afternoon. No direct sun on them but it was bloody hot. Plants actually looked like they perked-up a bit the next day and I could not see any red bugs! I have not seen any 'bad' bugs on the plants since then so no more spraying. ...but I will if I need to do it. I would say to not worry a lot about the heat but apply when there is not direct sun on the plants and use *only* the specified concentration as described by the label. Also, check the label to make sure your plants are listed as acceptable. One other thing: Growing plants in CA is diff' than here(I lived in San Diego for long time...) so if you feel a little worried, test on one plant without spraying the others. IIWM I'd pick the most infested for the test. Check the next day and if all is well, spray the others. Be sure to use a sprayer that will allow you to soak the plant and get *under* the leaves where the bugs are. HTHelps...See Moredeath by neem oil?
Comments (28)We were at 8 weeks on our black bean plants beautifully making their way up the trellis, when we decided to treat the leaves with Neem oil spray. A number of holes had appeared in the leaves which we presumed to be the result of aphids. We applied the Neem spray at 6pm. Instructions on the bottle asked the user to spray so that leave was saturated, and that to be effective, entire plants needed to be sprayed. The following days, the lower leaves turned yellow and began falling off. Tested soil: pH of 7.8 (slightly alkaline), and moisture meter (which shows indications of dry, moist, and wet) has the needle pointing halfway between moist and wet. I'm thinking that the runoff of the neem oil in the soil causes inability of root system to take up iron, or nitrogen, or both. Going to add 2 teaspoons of vinegar to gallon of water for next watering, and going to spread coffee grounds to add some nitrogen to soil. Any other ideas would be greatly appreciated as it is disappointing to see the plants suffer this late in the season....See Morerhizo_1 or anyone using neem..question?
Comments (5)Neem has the active ingredient azadiractin, which is an insect growth regulator. I took a look at the link you provided and it looks like there is no azadiractin in it. They have converted it to something similar to insecticidal soap, which also is potassium salts of fatty acids. There are many fatty acids, so not all products listing this ingredient are the same. The website suggests that this is more effective than regular insecticidal soap ("This unique fatty acid profile provides K+ Neem with exceptional insecticidal, miticidal and fungicidal properties.") because it is derived from the neem tree. Unless they have tested the product in a side-by-side comparison, there is no basis for this statement. I am also skeptical of the statement "because the mode of action is mechanical in nature insects and mites do not build up a resistance". There is no reason why insects can't develop resistance to this product. The bottom line is that this product is not what usually is sold as Neem. If that is what you want, then you need to look elsewhere....See MoreCan Neem Oil be used on vegetables?
Comments (2)Neem Oil is extracted from the fruits and seeds of the Azadirachta indica, a tree native to India. The people of India have been using Neem Oil extracts in many ways, including tooth paste products, for centuries with no harm to them. While not stated on these products the usual admonition for many of these products is to not spray them on o plants 24 hours before harvest, so do not spray the plants with Neem Oil 24 hours before you reap the harvest. kimmq is kimmsr...See Morerhizo_1 (North AL) zone 7
14 years agoKimmsr
14 years agojustaguy2
14 years agorhizo_1 (North AL) zone 7
14 years agotapla (mid-Michigan, USDA z5b-6a)
14 years agoKimmsr
14 years agogardengal48 (PNW Z8/9)
14 years agotapla (mid-Michigan, USDA z5b-6a)
14 years agoKimmsr
14 years agogardengal48 (PNW Z8/9)
14 years agojustaguy2
14 years agobootscootengal
13 years agodicot
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13 years agojolj
13 years agomizjayne
6 years agojolj
5 years agotfenn
3 years agolast modified: 3 years agoHU-464183171
3 years agolast modified: 3 years ago
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