Chemical and physical properties of organic residues

Revista Brasileira de Ciência do Solo

Fábio Satoshi Higashikawa²  Carlos Alberto Silva¹  Wagner Bettiol¹ 

[1] ,Federal University of Lavras Soil Science Department Lavras MG

关键词: substrate;    organic residue;    soil contamination;    residue disposal;    substrato;    resíduo orgânico;    contaminação do solo;    disposição de resíduos;   

DOI  :  10.1590/S0100-06832010000500026

来源: SciELO

【 摘 要 】

Due to human activity, large amounts of organic residue are generated daily. Therefore, an adequate use in agricultural activities requires the characterization of the main properties. The chemical and physical characterization is important when planning the use and management of organic residue. In this study, chemical and physical properties of charcoal, coffee husk, pine-bark, cattle manure, chicken manure, coconut fiber, sewage sludge, peat, and vermiculite were determined. The following properties were analyzed: N-NH4+, N-N0(3)-, and total concentrations of N, P, S, K, Ca, Mg, Mn, Zn, Cu, and B, as well as pH, Electrical Conductivity (EC) and bulk density. Coffee husk, sewage sludge, chicken manure and cattle manure were generally richer in nutrients. The EC values of these residues were also the highest (0.08 - 40.6 dS m-1). Peat and sewage sludge had the highest bulky density. Sodium contents varied from 0 to 4.75 g kg-1, with the highest levels in chicken manure, cattle manure and sewage sludge. Great care must be taken when establishing proportions of organic residues in the production of substrates with coffee husk, cattle or chicken manure or sewage sludge in the calculation of the applied fertilizer quantity in crop fertilization programs.

【 授权许可】

CC BY   
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