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good day I would like to learn about natural remedies to protect vegetables from insect attacks thanks
your question, although brief and concise, would require a whole treaty to receive an adequate response; with the terms "natural remedies" we can mean different things, because the concept of "natural" is very broad, and can also imply the concept of "harmless to humans, useful insects and small animals"; but it is not said that natural also means harmless or healthy. For example, many people use repellent products in the garden with macerated plants, such as garlic macerate or tobacco macerate; these macerates work as repellents for many insects, but for example the tobacco macerate is a broad-spectrum insecticide, which together with the aphids kills also ladybirds and bees, something not appreciated by our garden and even by our conscience. In addition to this, homemade preparations should be made with demineralized and sterilized water, and placed in clean containers, to be kept away from the light and in the refrigerator for very short periods of time, otherwise more than remedies can become real lands of cultivation of mold and bacteria. Perhaps with the natural term you mean suitable for organic farming, that is more respectful of the environment and also of the final consumer, or you, who will feed on the vegetables you grow. Today there are many more environmentally friendly products that do not kill all insects without discriminating between useful and harmful, and which have a low impact on the whole environment. The most common are neem extracts, spinosad, quassia extract; they are all insecticidal products, which must be used with caution, avoiding using them in a generalized way or as a prevention; also on these products then you will read that they have a time of deficiency, or that the treated vegetables should not be collected for a given period of time after the treatment. Instead, for fungal diseases, copper and sulfur are used, just like our grandparents did; these products are natural, but they are certainly not harmless, and even in this case they should be used with care and following the instructions on the packaging. If, on the other hand, you mean more naturally with how natural plant and insect development cycles are carried out, then you can turn to products suitable for biodynamic agriculture and integrated pest management; instead of chemicals or natural extracts, in specialized shops you can also find larvae of antagonist insects, bacilli that attack only some insects (or even mosquitoes), pheromone traps or special colors: all these methods are completely harmless to humans , for useful insects and small animals; indeed, they are typically very targeted: ladybug larvae feed on harmful insects such as aphids and cochineal; the bacillum thuringensis kills the mosquito larvae (indeed here the human hand has created particular varieties of bacillus, which also attack other insects). Pheromone traps are specific species, and attract moths that lay their eggs on geraniums, but leave colored butterflies. From my "natural" point of view, it is only this last point of view; all the rest is chemical, and sometimes, with some parasites, it is necessary (indeed sometimes even a duty) to turn to chemistry, as we do when we refuel for our car's fuel, when we prepare bread dough or when we go to Pharmacy.