ARBUSCULAR MYCORRHIZAL FUNGI AND PHOSPHATE FERTILIZATION ON THE SEEDLING PRODUCTION OF PARIC\uc1

A recupera\ue7\ue3o de diferentes ecossistemas degradados demanda pesquisas com esp\ue9cies florestais nativas que possam subsidiar programas de recupera\ue7\ue3o florestal. A produ\ue7\ue3o de mudas com esp\ue9cies arb\uf3reas nativas em associa\ue7\ue3o com os microrganismos do solo \ue9 uma importante t\ue9cnica para a reabilita\ue7\ue3o desses ambientes. O presente trabalho teve como objetivo avaliar os efeitos da inocula\ue7\ue3o com fungos micorr\uedzicos arbusculares (FMAs) e nutri\ue7\ue3o fosfatada sobre o crescimento e conte\ufados nutricionais de mudas de paric\ue1 [Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby]. O experimento casa de vegeta\ue7\ue3o por um per\uedodo de 75 dias, utilizando-se o delineamento experimental inteiramente casualizado, em esquema fatorial 4 x 4, inocula\ue7\ue3o com os FMAs: Rhizophagus clarus , Gigaspora margarita , in\uf3culo misto (Rhizophagus clarus + Gigaspora margarita) e controle (sem FMAs); quatro doses de P: 0, 60, 120 e 180 mg dm-3 de solo, com quatro repeti\ue7\uf5es. Foram avaliadas as vari\ue1veis altura, mat\ue9ria seca da parte \ue1rea (MSPA), mat\ue9ria seca da raiz (MSR), \ue1rea foliar (AF), di\ue2metro do coleto (DC) e os conte\ufados de N, P, K, Ca e Mg na parte a\ue9rea. As mudas de paric\ue1 apresentaram maior porcentagem de coloniza\ue7\ue3o para Rhizophagus clarus e o in\uf3culo misto (80 e 90%, respectivamente), diferentemente do observado para a esp\ue9cie Gigaspora margarita, com menor porcentagem (20%). O Rhizophagus clarus e o in\uf3culo misto, na aus\ueancia de P, propiciaram incremento para as vari\ue1veis de crescimento em rela\ue7\ue3o ao controle. Os conte\ufados de N, P, Ca e Mg foram influenciados pelos FMAs e pelas doses de P.The recovery of degraded ecosystems demands research with native species that can support forest restoration programs. The production of seedlings with native tree species in association with soil microorganisms is an important technique for the rehabilitation of these environments. This study aimed to evaluate the effects of inoculation with arbuscular mycorrhizal fungi (AMF) and phosphorus nutrition on growth and nutrient content of paric\ue1 seedlings [Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby]. The experiment was conducted in a greenhouse for a period of 75 days, using a completely randomized design in a factorial 4x4, inoculation with AMF: Rhizophagus clarus , Gigaspora margarita , mixed inoculum (Rhizophagus clarus + Gigaspora margarita) and control (without AMF), four P doses: 0, 60, 120 and 180 mg dm-3 soil, with four replications. The variables height, dry matter area, root dry matter, leaf area, stem diameter and the contents of N, P, K, Ca and Mg in shoots, were evaluated. Paric\ue1 seedlings showed higher colonization percentage for Rhizophagus clarus and mixed inoculum (80 and 90%, respectively), different from that observed for the species Gigaspora margarita, with a lower percentage (20%). The Rhizophagus clarus and mixed inoculum, in the absence of P, increased the growth variables relative to the control plants. The contents of N, P, Ca and Mg were influenced by the AMF and by the doses of P