Fertilization management with sewage sludge sustains Eucalyptus productivity in Cerrado infertile soil

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Silveira Cardoso, Paulo Henrique ; Neto, Anibal Deboni ; Oliveira, Fernando Carvalho ; Tomazello-Filho, Mario ; Perassolo Guedes, Fernanda Trisltz ; Alvares, Clayton Alcarde ; Stape, Jose Luiz ; Rodrigues Nogueira, Thiago Assis ; Capra, Gian Franco ; Jani, Arun Dilipkumar ; He, Zhenli ; Abreu-Junior, Cassio Hamilton

• Tipo de documento: Artigo Científico
• Fonte: FOREST ECOLOGY AND MANAGEMENT; v. 519, p. 10-pg., 2022-06-04.

Resumo

Sewage sludge (SS) application to Eucalyptus urograndis plantations can result in wood yields rivalling those achieved when mineral fertilizers are used. While climatic conditions determine Eucalyptus growth and wood production, the use of fertilizers containing boron (B) can mitigate the impact of drought on Eucalyptus growth. We hypothesized that SS application supplemented with P and B would improve growth and wood production of Eucalyptus planted in the Cerrado region of Brazil. We evaluated wood production and the influence of two years of meteorological seasonality on trunk cross-sectional area (TCSA) growth of Eucalyptus planted on an infertile Oxisol treated with SS. The experiment was conducted on a 54-month-old Eucalyptus urograndis plantation. The treatments were: i) control; two levels of mineral fertilization; iii) seven SS treatments with or without P and/or B. SS application, based on tree N requirement, supplemented with P, resulted in wood production like those produced under mineral fertilization. Within climate variables, rainfall, potential evapotranspiration, and minimum air temperature had the largest influence on Eucalyptus TCSA growth. There was lower accumulated TCSA growth in the cold and dry winter season compared to the hot and rainy summer. However, SS application supplemented with B promoted TCSA growth, enhancing Eucalyptus tolerance to drought periods. In summary, SS supplemented with P and B is a valuable option as an organomineral fertilization management in Eucalyptus plantations, as it improved trunk growth during drought periods as well as wood volume production. (AU)

• Processo FAPESP: 04/15097-0 - Uso agrícola de lodo de esgoto em sistema florestal para produção de eucaliptos
• Beneficiário: Cassio Hamilton Abreu Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 19/14297-1 - XXV Congresso Mundial da IUFRO 2019
• Beneficiário: Cassio Hamilton Abreu Junior
• Modalidade de apoio: Auxílio à Pesquisa - Reunião - Brasil
• Processo FAPESP: 17/26375-1 - Inclusão de elementos tóxicos nas funções dris e cnd para avaliação do estado nutricional de eucalipto
• Beneficiário: Paulo Henrique Silveira Cardoso
• Modalidade de apoio: Bolsas no Brasil - Doutorado