Note: Program subject to change without notice

Thursday, November 8, 2007
347-6

Effects of Biosolids on Degraded Soil and on Tropical Tree Growth.

Irae Amaral Guerrini1, Thalita Fernanda Sampaio1, Plínio Gonçalves Oliveira1, Kaliana Tanganelli1, Rodrigo de Menezes Trigueiro2, Giovana Baggio de Bruns3, Fernando Carvalho Oliveira4, Rogério Carlos Traballi1, and Glaucia Uesugi1. (1) State University of Sao Paulo/UNESP, Faculdade de Ciencias Agronomicas, Dept. Recursos Naturais/Solos CP-237, Botucatu, 18603-970, Brazil, (2) Companhia Vale do Rio Doce, Parauapebas, Brazil, (3) Departamento de Ambiente, Cia. Suzano Bahia Sul de Papel e Celulose, São Paulo, Brazil, (4) Biossolo - Agricultura e Ambiente, Piracicaba, Brazil

The objective of this work was to evaluate the effects of biosolid application on the characteristics of a degraded sandy soil and on Brazilian tropical tree species growth and mineral nutrition. The species used belong to different ecological groups namely pioneer, secondary and climax trees. After one year, treatments with biosolid promoted higher soil OM, CEC, P, Fe, Cu, Mn and Zn content. Species with fast growth (pioneer) were more effective on response to biosolid application in relation to secondary and climax species (with slower growth) and presented higher foliar concentration of N, K, Ca, Mg and Mn. Preliminary results showed that biosolid is an excellent residue to recover degraded soils and on revegetation with tropical tree species.