Soil carbon and physical-mechanical properties after successive applications of swine and poultry organic waste

Pesquisa Agropecuária Tropical

José Alcides Soares de Freitas¹  Anderson Luiz Zwirtes²  Douglas Rodrigo Kaiser³  Vanderlei Rodrigues da Silva⁴  Felipe Bonini da Luz⁴ 

[1] Cooperativa Tritícola Regional São Luizense, São Luiz Gonzaga, RS, Brasil.;Instituto Federal de Santa Catarina, São Miguel do Oeste, SC, Brasil.;Universidade Federal da Fronteira Sul, Cerro Largo, RS, Brasil.;Universidade Federal de Santa Maria, Departamento de Ciências Agronômicas e Ambientais, Frederico Westphalen, RS, Brasil.;

关键词: Organic fertilization;    soil physical quality;    organic matter;   

DOI  :  10.1590/1983-40632018v4852412

来源: DOAJ

【 摘 要 】

In agricultural crops, the use of swine and poultry waste as organic fertilizers results in gains in the productivity and reduction of production costs, but it may also change the physical properties and mechanical behavior of the soil, either increasing or reducing its quality. This study aimed to investigate the influence of applying increasing doses of liquid swine manure (160 m³ ha-1 year-1, 320 m³ ha-1 year-1 and 480 m³ ha-1 year-1) and poultry litter (6 Mg ha-1 year-1, 12 Mg ha-1 year-1 and 18 Mg ha-1 year-1), along four years, on the physical-mechanical properties and organic carbon content of a very clayey Rhodic Eutrudox. The application of liquid swine manure and poultry litter increased the surface soil organic carbon contents. The soil density decreased, whereas the total porosity and macroporosity increased, with the addition of liquid swine manure and poultry litter. There were no significant changes in the soil susceptibility to compaction.

【 授权许可】

Unknown