CRESCIMENTO E SOBREVIV\ucaNCIA DE MUDAS DE SABI\uc1 ( MIMOSA CAESALPINIAEFOLIA BENTH.)INOCULADAS COM MICRO-ORGANISMOS SIMBIONTES EM CONDI\u106 5ES DE CAMPO

Sabia ( Mimosa caesalpiniaefolia Benth.) has ecological characteristics and symbiotic associations with nitrogen fixing bacteria and arbuscular mycorrhizal fungi. These associations are used as biological tool that could be used as an able alternative to minimize chemical fertilizer use and benefit plant development at environments under nutritional deficit. The objective of this study was to evaluate the growth of Leguminosae Sabia (Mimosa caesalpiniaefolia Benth.) like response to rhizobia and arbuscular mycorrhizal fungi inoculation, to establish growth curves to height and stem based diameter, to determine the N and F contents in plants aerial parts and to evaluate plants survival at field. The strain used was BR3405, The arbuscular mycorrhizal fungi used was Glomus clarum and Gigaspora margarita . The Glomus clarum + Gigaspora margarita + BR3405 and Gigaspora margarita inoculation provided better values for the studied variables (height, diameter, N and P) , and this last one was the best choice to Sabia plantation. The plants showed 100 % survival, regardless the treatment ued. There was not significant statistical difference for N and F concontent in Sabia aerial part., Nevertheless, it was noticed a faster growth in plants with symbiont.A Sabi\ue1 ( Mimosa caesalpiniaefolia Benth.) possui a caracter\uedstica ecol\uf3gica de se associar simbioticamente a bact\ue9rias fixadoras de Nitrog\ueanio e fungos micorr\uedzicos arbusculares. Tais associa\ue7\uf5es s\ue3o utilizadas como ferramentas biol\uf3gicas capazes de minimizar o uso de fertilizantes qu\uedmicos e beneficiar o desenvolvimento da planta em ambientes com d\ue9ficit nutricional. Este trabalho teve como objetivo avaliar o crescimento da Sabi\ue1 em resposta \ue0 inocula\ue7\ue3o com riz\uf3bio e fungos micorr\uedzicos arbusculares, estabelecer curvas de crescimento em altura e di\ue2metro do colo, determinar os conte\ufados de N e P na parte a\ue9rea das plantas e avaliar a sobreviv\ueancia das plantas em campo. A estirpe de riz\uf3bio utilizada foi a BR3405, os fungos micorr\uedzicos arbusculares utilizados foram Glomus clarum e Gigaspora margarita . A inocula\ue7\ue3o conjunta de Glomus clarum + Gigaspora margarita + BR3405 e a inocula\ue7\ue3o com o isolado Gigaspora margarita promoveram os melhores valores para as vari\ue1veis estudadas (altura, di\ue2metro do colo, conte\ufado de N e P), sendo este \ufaltimo o tratamento mais indicado para o cultivo da Sabi\ue1 nas condi\ue7\uf5es em estudo. As plantas apresentaram 100 % de sobreviv\ueancia, independente do tratamento utilizado. N\ue3o foi constatada diferen\ue7a estat\uedstica para os conte\ufados de N e P na parte a\ue9rea da Sabi\ue1, por\ue9m, foi observado maior crescimento das plantas com o uso dos simbiontes