Insetticida naturale a base di ortiche

di Redazione 18

Marco M. (lo ringraziamo) ci invia una ricetta naturale e semplice da preparare per difendere le piante dagli insetti senza ricorrere a pesticidi chimici: un insetticida a base di ortiche. La pubblichiamo volentieri sperando vi sia utile e se avete altri consigli da condividere con noi scriveteci pure a [email protected], saremo lieti di promuoverli tra i nostri lettori. Occorrono:

  • 1 kg di ortiche (il fusto d’ortica giovane)
  • 10 litri di acqua

Procedimento: lasciare a macerare per dieci giorni, usufruire della sintesi diluendola 1 a 10 cioè 1 litro di estratto va miscelato con 10 litri di acqua, innaffiare o nebulizzare sulla pianta.

A cosa serve: tale composto elimina gli afidi e rende repellenti le foglie delle ortive alle larve di numerosi insetti, inoltre produce una benefica azione fitostimolante per la vegetazione.

Commenti (18)

  1. non ho capito una cosa:
    1. ma l ortica deve macerare da sola o nell acqua??

    2. questo sistema è ottimo per chi ha un orticello ad uso familiare, ma per un agricoltore servirebbero piantagioni intere di ortiche per disinfestare un campo.

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