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Neem oil is a vegetable oil extracted from the Miracle Tree – that’s the Neem Tree. The botanical name of neem tree is Azadirachta indica. Azadirachtin and Nimbin found in neem oil are the two major compounds responsible for its antibacterial and antifungal actions.
This neem tree is native to the Indian subcontinent and can be easily grown at home gardening level even in large containers.
Before we discuss on which Neem oil you should purchase for best efficacy in gardening, we will list out the best uses of neem oil for your plants and gardening.
Now, we will discuss the most important aspect of this video, based on which the quality, composition and efficacy of neem oil depends – that’s the method of extraction of neem oil from seeds.
There are three methods:
Heat pressing method – as the name implies, its using heat for crushing or pressing the seeds to extract oil.
Solvent extraction means using a solvent like alcohol is used to extract neem oil. This solvent extracted neem oil usually has a low price, because it is turbid and contains a significant amount of water and metals with low content of the important compounds namely azhadiractin and nimbin.
Heat extracted neem oil also has moderate loss of the useful compounds and less effective.
Whereas the Cold pressed Neem oil extracted without applying any heat, is the best and effective source for neem oil. So, when you are purchasing from a local garden store or online, make sure you check the method of extraction mentioned on the bottle or product description. You can purchase cold pressed neem oil here.
How to use Neem oil properly for the best effects?
Before I start with the neem oil recipes for plants, the safety profile of neem oil. It has few effects when concentrated form is ingested like stomach irritation causing gastritis and vomiting. Then Eye irritation and contact dermatitis can develop on contact specially in children. Otherwise it has an excellent safety profile and its completely biodegradable.
Now the recipe for Neem Oil you can make at Home.
Before this, few important points you must remember:
To Make the best broad spectrum PESTICIDE FOLIAR SPRAY FORMULATION for 1 litre:
Take 1 litre Warm Water and add 10 drops of liquid soap like your handwash or
even some shampoo. Then you add 5 ml to
10 ml of Neem oil into this. 5 ml if you want to spray as a maintenance
pesticide spray for your garden where you do not have much pests.
10 ml if you have lot of pests on your plants.
Mixing this thoroughly before use is very important.
Perform a PATCH TEST to know how strong it is. This means you Just spray this
on one or two leaves and then wait for a couple of hours to see if the leaf is
wilting or burning due to too much concentration of neem oil. If you pass the
patch test, you can spray it on your whole garden safely. Patch test may be
important for newbie gardeners or if you have purchased a new brand of neem oil
from some company for the first time.
Also make sure you spray the underside of the leaves as well.
Happy Gardening!
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