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SCABORA, Márcia Helena; MALTONI, Kátia Luciene  and  CASSIOLATO, Ana Maria Rodrigues. Growth leaf, acid phosphatase activity and mycorrhization of tree species on degraded cerrado soil. Bragantia [online]. 2010, vol.69, n.2, pp.445-451. ISSN 0006-8705.

The occupation of cerrado areas to increase crop production has resulted in soil degradation and introduction of tree species to revegetated these areas is recommended. The objective of this work was to evaluate the plant growth (height, fresh weight and dry weight of above ground), activity of leaf acid phosphatase and mycorrhizal colonization of tree exotic species seedlings on a degraded cerrado soil. The experiment was carried out in a greenhouse at the UNESP - Univ. Estadual Paulista, Campus of Ilha Solteira, Brazil, using soil collected from cerrado degraded area under natural regeneration process, located at Três Lagoas, State of Mato Grosso do Sul, Brazil. The soil, mixed with river sand (4:1), was fumigated with methyl bromide and placed in plastic bags (2,5 L). For the treatments with AMF inoculation, 100 g of inoculum soil (soil from preserved Cerrado area) were placed on the soil surface after seedlings were transferred into the plastic bags. Results showed that Psidium guajava L. and Croton floribundus Spreng, followed by Tabebuia chrysotricha (Mart. ex DC) Standl) and Rapanea ferruginea (Ruiz et Pav) Mez, presented high root colonization and very high or high response to mycorrhization, suggesting their potential for projects of revegetation of the Brazilian cerrado, or enrichment of degraded areas.

Keywords : arbuscular mycorrhizal fungi; revegetation; mycorrhizal dependency.

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