Making Pesticides from Onion Peels – When he started diligently gardening, he suddenly saw that there were chili and tomato trees that suddenly withered and died. When examined, it turns out that there are pests under the leaves. In the form of white. And need a way how to prevent this from happening with other chili and tomato plants.
If you use chemical pesticides, you are afraid that a lot of them will stick and not disappear which of course will be dangerous if eaten. Finally found a natural pesticide that can be used. Only made from red and white onion skin. That’s enough. So don’t throw away the skin of the onion and garlic after cooking. Use it to make natural pesticides.
Why can onions because in onions there are acetogenin compounds. In high concentrations this compound is anti-feedent. As a result, insects are reluctant to eat the plant. So it is useful for killing caterpillars and fungi as well as onion skin can also provide fertility for plants.
As a result, it can accelerate growth. These compounds are present in 32 or 34 carbon chains having oxygenated functional groups including hydroxyl, ketone, epoxide, tetrahydrophorane, and tetrahydropyrine, and end in a lactone or butenolide. Of the 400 members of this family of compounds have been isolated into 51 different plant species.
Structurally, acetogenin is a C 35/C 37 chain chain characterized by a long aliphatic chain. This chain has a methyl substituted alpha, a beta lactone gamma ring and one to three tetrahydrofuran (THF) rings. These rings are present along the hydrocarbon chain along with oxygen groups (hydroxyl, acetoxyl, ketone, epoxide).
The mechanism is that high concentrations of acetogenin can act as an antifeedant, meaning that insects will have less appetite so they are reluctant to eat the plants they like. If the concentration is low, it can even become a stomach poison that causes insect pests to die.
Materials and tools needed to make natural pesticides
- Onion skin (so don’t throw away the skin after cooking)
- What size plastic bottle?
- Spray bottle
Also Read : Choosing and Storing Onions for Long Lasting
How to make
- So put the onion skin in a plastic bottle until it’s half
- Then add water until it’s full
- And let it sit for two days
- Strain and put into a spray bottle and ready to use.
How to use it by spraying the leaves or stems affected by pests. And the use depends on the severity. Could be two or three times a week.
Apart from being a natural pesticide, onion peel can also fertilize plants. If pesticides are applied to leaves that are affected by pests, if to fertilize, pour them near the roots. Besides that, onion peel can also stimulate flower growth, it can be applied to the roots. This is because there are compounds in onion skin that can stimulate plant growth.
So don’t throw away the onion skin because it is very useful for the plants that we plant in the yard. Can eradicate pests and fertilize plants.
In addition, when we want to plant, for the planting medium, we can also directly add onion skin which is mixed into the soil and compost media. Of course this is very good, there is no wasted waste, it can be used for something useful