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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Soil Macrofauna Responses to Sugarcane Straw Removal for Bioenergy Production

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Autor(es):
Santos Menandro, Lauren Maine [1, 2] ; de Moraes, Luana Oliveira [1, 3] ; Borges, Clovis Daniel [1] ; Cherubin, Mauricio Roberto [4] ; Castioni, Guilherme Adalberto [1] ; Nunes Carvalho, Joao Luis [1]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Biorenewables Natl Lab LNBR, Giuseppe Maximo Scolfaro St 10000, BR-13083970 Campinas, SP - Brazil
[2] Univ Estadual Campinas, UNICAMP, PhD Program Bioenergy, Av Candido Rondon 50, BR-13083896 Campinas, SP - Brazil
[3] Univ Estadual Campinas, Fac Agr Engn, FEAGRI, UNICAMP, Av Candido Rondon 501, BR-13083875 Campinas, SP - Brazil
[4] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Dept Soil Sci, CP 09, BR-13418900 Piracicaba, SP - Brazil
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: BioEnergy Research; v. 12, n. 4, SI, p. 944-957, DEC 2019.
Citações Web of Science: 0
Resumo

Sugarcane (Saccharum officinarum) residue (straw) has been identified as a promising feedstock for bioenergy production, but excessive straw removal may impair soil macrofauna and related ecosystem services. To quantify straw removal effects on abundance, richness, and diversity of soil macrofauna, four experiments were conducted in Sao Paulo state, Brazil, under different edaphoclimatic conditions. A secondary goal was to evaluate seasonal changes on soil macrofauna and identify linkages between those changes and soil chemical and physical attributes. Four straw removal treatments (NR, no removal, LR, low removal, HR, high removal, and TR, total removal) were evaluated. Macrofauna and other soil attributes were sampled within the 0- to 0.30-m depth increment. Soil macrofauna were impaired by TR with the magnitude of response being related to both edaphoclimatic conditions and management practices. Numerous interactions among seasons, straw removal rates, and soil macrofauna were found, especially for total abundance and diversity of organisms. Partial straw removal (HR and LR) may be a strategy to protect soil health and increase bioenergy production with minimal effects on soil macrofauna, although long-term experiments are needed to confirm our hypothesis. The NR treatment generally had better soil quality as indicated by greater soil moisture, macropore number, soil organic carbon (SOC) content, and soil fertility, which led to a higher abundance of most macrofauna organisms. Total removal resulted in greater soil compaction and decreased macrofauna abundance, especially in clay soils. Our findings confirm that an integrated approach using soil indicators as guidelines should be adopted to better predict sustainable straw management practices for sugarcane in Brazil. (AU)

Processo FAPESP: 18/09845-7 - Implicações da expansão e intensificação do cultivo da cana-de-açúcar nos serviços ecossistêmicos do solo
Beneficiário:Maurício Roberto Cherubin
Linha de fomento: Auxílio à Pesquisa - Regular