Efeitos do Eucalyptus camaldulensis sobre a colonização micorrízica e a nodulação em Dimorphandra mollis e Stryphnodendron adstringens, em Brasilândia, Minas Gerais

Abstract

In order to evaluate the Eucalyptus camaldulensis plantation effect on mycorrhyzal colonization and nodulation root samples of two arboreal species: Dimorphandra mollis (Fabaceae Caesalpinioideae) and Stryphnodendron adstringens (Fabaceae Mimosoideae) were analyzed. The samples were taken on strips of native cerrado, in plantation of Eucalyptus and preservation area of native cerrado (latitude of 16o 49 S to 170 06 S and longitude of 45o 40 W and 45o 59 W) the town of Brasilândia de Minas, MG. The square X test for nodulation frequency and variance analysis (p=5%) for presence of mycorrhizas was applied for the presence mycorrhyzal. The results presented no significant differences between the treatments for the species investigated. Nevertheless, for p=10%, the statistical analysis showed that Stryphnodendron adstringens presented a variation in the mycorrhization percent within the areas studied showing that there was an effect of Eucalyptus camaldulensis on the soils affecting the population of those microorganisms . The results suggest the indication of Dimorpandra mollis for mixture with Eucalyptus camaldulensis in response to the needs of minimizing the impacts of this monoculture.