A greenhouse experiment was carried out to evaluate the growth of guava plant seedlings, inoculated with arbuscular mycorrhizal fungi (AMF), Glomus clarum Nicolson & Schenck, produced in pressed blocks made with agro-industrial residues. The experimental design utilized was a completely randomized in factorial 2x2, having two microbiological treatments: control and inoculated; two systems of production: pressed blocks (new methodology) and plastic tubes (traditional), with 5 repetitions. The substrate utilized to make the pressed blocks and to fill the plastic tubes was constituted by a mixture of sugarcane bagasse and filter cake (3:1 v/v). The AMF inoculation led to a significant increase in dry matter yield and nutrients content of shoot plants, only in pressed blocks. Plants produced in pressed blocks, when inoculated with AMF, showed an increase of 88% in dry matter yield, 82% of nitrogen content and 89% of phosphorus content in the plant shoots.
mycorrhiza; guava; plastic tubes; pressed blocks
