The importance of the earthworms for the fertilizao and recovery of ground already was known has two a thousand years more than. The philosopher Aristotle defined the earthworms as ' ' ploughs of terra' ' , thanks to its capacity of escarificar lands hardest. With the intenso to know more on the earthworms, and to provide alternatives to the chemical seasoning use in the production of hortalias and to spread out this it practises in the country properties, developed it construction of a minhocario in the Municipal School Minuano. After studies and research carried through on the species of the earthworms that better adaptavam the production of hmus in our region, its cycle of reproduction, predators gave – the construction of the minhocario. It was decided for the use of the Californian and African species. It was initiated with 10 earthworms Californian (Eissenia Andreil) and exclusively fed of vegetal remaining portions and 10 African earthworms (Eudrilus Eugenial) only fed with esterco of cattle.

During 90 days they had been observed, and written down the occured changes in the minhocario, this work is carried through weekly by the pupils folloied for the professors, when also they executed the maintenance of the same, restituting to the feeding if necessary it was. An experience of the junction of the fertilizer was carried through eliminates of hmus of the African earthworm with a organic bioinseticida made with tobacco Calda the brief one analyzes of this experiment made possible that these two products had acted of slow form, but satisfactory in the growth and development of the vegetal species studied with respect to borecole (oleracea Brassica L. Family: Brassicaceae). The use of the biofertizante of hmus of the earthworm associated with tobacco Calda an excellent organic defensive of plagues and insects presented excellent resulted as seasoning to folhar in the hortalias.