Open AccessAtributos físicos de um Latossolo Vermelho distrófico degradado em resposta à aplicação de biossólidos
Author(s) -
Flávio Carlos Dalchiavon,
Edjair Augusto Dal,
Marcelo Fernando Pereira Souza,
Rubens Ribeiro,
Marlene Cristina Alves,
Gilberto Colodro
Publication year - 2013
Publication title -
agrária
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.245
H-Index - 13
eISSN - 1981-1160
pISSN - 1981-0997
DOI - 10.5039/agraria.v8i2a2370
Subject(s) - sawdust , randomized block design , sewage sludge , organic matter , moisture , chemistry , water content , environmental science , agronomy , sewage , environmental engineering , biology , geology , geotechnical engineering , organic chemistry
Sewage sludge, waste with high organic matter content and rapid decomposition, combined with sawdust, rich in carbon and slow decomposition, are suitable components for the study of degraded areas. In order to test the interactions of these residues in the recovery of a degraded soil in Selvíria - MS, four doses of sewage sludge (0, 8, 16 and 24 t ha -1, dry basis ) and four doses of sawdust particles (0, 8, 16 and 24 t ha-1, dry basis ) were tested in February 2009, in a completely randomized block design (4 × 4 + 1 factorial), with four replications. As indicators of the effects, the penetration resistance, gravimetric moisture and soil bulk density (0-0.10, 0.10-0.20; 0.20-0.40 m) were used. Significant effects were observed for the factors (sewage sludge and sawdust) and control treatment for penetration resistance in the soil depths studied, for gravimetric moisture in the intermediate layer and for the soil density in the surface and intermediate layers. Considering the type of soil and the short period of study (24 months), the use of organic wastes presented improvement in physical properties of soil in relation to control. However, it is necessary to study them for a longer period