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First of all, in addition to realizing their structure in areas far from factories and highways that could contaminate crops, large farms use precisely the biological insecticides that fight pests, with the use of medicinal herbs in the form of macerated or infusions.This practice, together with the use of organic fertilizers and natural fertilizers such as manure from the stables of farmed animals, ensure that these farms preserve and transform their products, using a methodology that does not involve the use of products chemical.All this, of course, is certified before the vegetables arrive on consumers' tables, through legally recognized organizations.As far as pesticides are concerned, in fact, according to current legislation, contamination of 0.9% is permitted.The products to defeat various mites and insect pests on crops, can be purchased in specialized nurseries where you will find a special department that treats natural products extracted from plants.You will find, for example, Diatomaceous earth which is the most used product in organic farming.In fact, diatomite is an absolutely natural residue that is found on the market in the form of concentrated powders and is very effective for ants, cockroaches, silverfish and centipedes and is of low environmental impact.Another natural pesticide on the market, it is based on borax while both on the web and in physical stores, you can buy natural insecticides consisting of mixtures of essential oils and medicinal plant extracts.There are also cedar-based insecticides on the market that are used directly on the leaves of plants, spraying the product with a regulator.Biological insecticides: How to make DIY organic insecticides
The making of biological insecticides is much easier than you may think.
The officinal herbs in fact, come to our aid in a remarkable way.
The antiparasitic plants to combat harmful insects are multiple. Garlic, Absinthe, Nettle and tomato, help us get rid of weeds.
To prepare a nettle macerate, about 10 liters of cold water are used in which we will soak a kilogram of finely chopped nettles.
The mixture is left to macerate for 12 days and then the solution is filtered and bottled in dispensers with which we will spray the crops.
This solution is capable of defeating the infamous little red spider, downy mildew and aphids in general.
It also manages to revive the plants and increase their growth in a completely natural way thanks to substances such as histamine and formic acid. If instead we want to make the garlic macerated, we have to crush 100 grams of product and soak it in 10 liters of water that will be left to macerate for 3 days.
After this time, the mixture is filtered, bottled in the dispensers and sprayed on the crops.
The solution is very useful for gray mold, plant rust and mites in general thanks to itiammide, allicin and allina which are the main active ingredients of garlic.