Abstract

This study aimed to compare the use of sawdust and coir dust as substrates for composting of pig slurry, aiming to give a destination to this waste produces a compound that can be used as organic fertilizer. We used a factorial experimental design with two treatments (sawdust substrate - TSE and coconut coir substrate - TCO) and four replications. We recorded the maximum and minimum temperatures of the compound daily and collected samples for chemical analysis of moisture, dry matter, carbon, nitrogen as well as the calculation of the C / N. During the experiment, the temperatures recorded varied widely among treatments with a minimum of 25 ° C and maximum 37 ° C. The humidity was very high TCO in treatment (70%) is considered unsatisfactory to the composting process. In treating TSE this value was 60% and the values of organic carbon and total nitrogen reached a satisfactory performance for composting as compared with treatment TCO. The C / N ratio reached acceptable levels between the two treatments (TCO and TSE) despite the differences in the levels of C and N in the two substrates.

Highlights

  • NEVES, Claudineide Soares; SILVA, Thiago Lima da; SANTOS, Gleicianny de Brito; RONNER, Márcia Nunes Bandeira; LIMA, Arlene dos Santos; FAGUNDES, Jailson Lara; BARRETO, Marcos Cabral Vasconcellos

  • A umidade se mostrou muito elevada no tratamento TCO (70%) sendo considerada insatisfatória para o processo de compostagem

  • This study aimed to compare the use of sawdust and coir dust as substrates for composting of pig slurry, aiming to give a destination to this waste produces a compound that can be used as organic fertilizer

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Summary

Coconut powder and sawdust as substrate for composting liquid swine manure

Claudineide Soares Neves(1); Thiago Lima da Silva(2) Gleicianny de Brito Santos(3); Márcia Nunes Bandeira Ronner(4). RESUMO: O presente trabalho teve como objetivo comparar a utilização de serragem e pó de fibra de coco como substratos para compostagem de dejetos líquidos de suínos, visando dar um destino a esses resíduos produzindo um composto passível de ser utilizado como fertilizante orgânico. Foram registradas as temperaturas máxima e mínima do composto diariamente e coletadas amostras para análise química de umidade, matéria seca, carbono, nitrogênio como também o cálculo da relação C/N. No tratamento TSE esse valor foi de 60% e os valores de carbono orgânico e nitrogênio total alcançaram um desempenho satisfatório para a compostagem quando comparado com o tratamento TCO. A relação C/N atingiu níveis aceitáveis entre os dois tratamentos (TCO e TSE) apesar das diferenças dos níveis de C e N nos dois substratos.

PROCEDIMENTO METODOLÓGICO
Findings
COCONUT POWDER AND SAWDUST AS SUBSTRATE FOR COMPOSTING LIQUID SWINE MANURE
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