The active ingredient’s are listed as 11.82 g/l Azadirachtin A & B. Thank you for the information on this product. The attraction is that it is natural, organic, and relatively safe. The half-life of azadirachtin in soil ranges from 3 – 44 days. Azadirachtin is a group of compounds, A and B are two of them. Any idea what the A & B means? It is thought the oil coats the spores and keeps them dry, thereby preventing spore germination. Neem oil does not control spiders, earwigs or ants. The attraction is that it is natural, organic, and relatively safe. It only prevents further infection. It may be better to spray at the recommended rate and spray more often. The oil remains longer but is washed off with rain. Such an all inclusive product would certainly be good to add as a gardening tool, but before you do that, I suggest you read this post and get some important information about it. Neem oil can control some fungal diseases, but azadirachtin has no known effect of these diseases. When I started researching this topic, I thought that this would be a simple answer, but it’s not. It is always a good idea to do a test spray on a few leaves and wait a couple of days to see if there is damage. Which neem should you buy? May be once fruits are formed, it might be ok to do a foilar spray..but soil drench is absolutely no. If it does not list azadirachtin, assume it is clarified hydrophobic neem oil with zero azadirachtin. As it kills mites, which are not insects but, instead, related … Read the instructions on the bottle and use it only for the insects listed. - 10ml neem oil - 10ml soap ( castille soap) - 1-2t tsp baking soda. In addition to its use as an organic insecticide spray, this oil has been used medicinally and in the cosmetics industry. It is unclear to me how well it controls other types of fungal infections. Foilar spray may work fine..if the flowers havent formed for other vegetables. This is an effective dilution for a foliar spray (i.e. Reapply after rain or every 7 – 10 days. spraying on leaves). For example, exposure to azadirachtin inhibited egg-laying of green lacewing (C. carnea) females, an important predator of aphids. Azadirachtin is quickly degraded by sunlight and will last less than a day when sprayed on leaves. Hello from Sri Lanka . Another very useful and informative assessment. It can be used to control or kill a wide range of pests, and it’s relatively available to the consumer. It is not a statement of scientific fact. Just one follow on question – you didn’t compare the insecticidal success rate of azadirachtin, as applied in the available neem products, to any other available insecticides. It can be the original neem as I have described above, which still contains azadirachtin or it could be the clarified hydrophobic neem oil. Neem oil is used to control many pests, including whitefly, aphids, Japanese beetles, moth larvae, scale, and spider mites. I have been using Neem oil for a few years. It only prevents further infection. This neem can be further processed to remove the azadirachtin from the rest of the oil. Product manufactures use all kinds of descriptions to fool you. Discussions on social media suggest that neem oil controls just about any insect and disease found in the garden. Follow label instructions, but in general oils should not be sprayed in hot weather and they should not be used on recent transplants or on plants that are wilted or under stress. Neem oil is a natural oil extracted from the Neem tree. The tree produces nuts which are ground and pressed to extract their oil, not unlike the way olive oil is produced. It may be better to spray at the recommended rate and spray more often. In Canada, neem is not registered as a pesticide, so you can’t buy it as such. For more on powdery mildew see: Powdery Mildew Treatments. If you like this post, please share ....... Error type: "Forbidden". In some cases some control has been reported, but other products may work just as well. For the best neem this process is done at low temperatures resulting in something called “cold pressed neem”. It is critical that you buy the right product because a lot of the commercial neem products have a limited ability to control insects. Neem Oil Insecticide and Fungicide For Plants, image source: Hayavadhan. It works against things like scale, mealybugs, leafhoppers, mites, whiteflies and aphids, but it does not control many of the other insects that are controlled by neem oil. where’s your scientific evidence that you insist everyone else quote? Iris Identification - Which Type of Iris Do I Have? Maybe. Both forms of neem are considered very safe. Both of these provide some systemic effects. Enter your email address to receive notice of new blog postings. Unfortunately, this term is largely misused and can be just about any product obtained from the neem tree fruit. The active ingredient in neem that harms insects is called azadirachtin and the cold press process ensures that it does not degrade. It can kill insect eggs. The remaining oil is called “clarified hydrophobic extract of neem oil”, or “clarified hydrophobic neem oil”. Commercial products also add adjectives like “pure”, “100% natural”, “extracted” and “concentrated”, just to confuse the public even more. If an adult insect doesn’t mind eating sprayed leaves, then neem oil won’t control them. Spores of this fungus require water to initiate growth and infect leaves. What is neem oil? The amount of azadirachtin in the product is important. GA3 - Gibberellic Acid Speeds Up Seed Germination. Unsubscribe at any time. There is no effect on an existing infection so spraying plants will not cure the plant or remove existing powdery mildew. For the best neem this process is done at low temperatures resulting in something called “cold pressed neem”. LED Grow Lights - Getting the Right Color Spectrum, Eggshells - How Not to Use Them in the Garden, 21 Common Indoor Plant Myths - That Save You Time and Money. The plant died as a result. Neem oil does not control spiders, earwigs or ants. I would absolutely not recommend spraying or soil drench neem oil to any leafy green vegetable. It sounds like the active ingredient but it’s the name of the neem tree. It sounds like the active ingredient but it’s the name of the neem tree. My advice is to ignore the product name and description. Will Methanol Foliar Spray Grow Bigger Plants? I live in Blainville Québec and we are infested with those brownish lady bugs.