Schinus terebinthifolius Raddi. seedlings production with arbuscular mycorrhizal fungi in differents substrates

Abstract

The present work aimed to evaluate the effetc of two types of substratum (S1 and S2), in the presence or absence of arbuscular mycorhizal fungi (AMF), on Schinus terebinthifolius seedlings, using tubes of 280 mL. The experiment was carried out in greenhouse at Departamento de Solos, Instituto de Agronomia, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, to June from September 2005. S1 and S2 were constituted by a mixture (in volume), previously disinfested, of rocks’s fosfato (10%), washed thick sand (30%), clay (30%) and organic matter (30%). For S1, the source of organic matter was industrial residue of synthetic rubber production (LETRIP), whereas for S2, bovine manure. The experimental design was completely randomized in a split-plot with 24 replicates and 6 plants per plot. At 120 days after experiment instalation, S2 showed to be superior than S1 for most of the datas (height, diameter, shoot and root dry mass, N, P and K shoot concentrations, and N root concentration). There wasn’t any significant difference between the inoculated and not inoculated treatments, probably because of the high nutrients concentration in S1 and S2. And so it was the reason of the absence of root colonization in S2. LETRIP played a protector effect in native AMF spores against fungicide action, which permited root colonization in S1 without inoculation. In conclusion, S2 was more indicated to S. terebinthifolius seedling production.