Índices de cobertura vegetal e fitomassa de Stylosanthes guianensis Cv. mineirão em área degradada, fertilizada com adubo mineral e biossólido

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Data

2008-03

Autores

Godoi, Emiliano Lôbo de
Borges, Jácomo Divino
Leandro, Wilson Mozena

Título da Revista

ISSN da Revista

Título de Volume

Editor

João Batista Duarte

Resumo

Sewage sludge, when treated and considered proper to agronomic application, is called biosolid and can be used to recover degraded areas, as an organic material source for soil conditioning and plant nutrition. The objective of this research was to evaluate the potential of sewage sludge produced by the Estação de Tratamento de Esgoto (ETE), in Goiânia, Goiás State, Brazil, enriched with 50% (v/v) of CaO and growth bio-stimulator, for recovering a degraded area. The evaluated variables were soil covering and the Stylosanthes guianensis cv. Mineirão yield. Eight treatments, in randomized complete block design, were evaluated, with four replications. The treatments were: control; mineral fertilizer; 20 Mg ha-1 of biosolid; 20 Mg ha-1 of biosolid + biostimulator; 40 Mg ha-1 of biosolid; 40 Mg ha-1 of biosolid + biostimulator; 60 Mg ha-1 of biosolid; and 60 Mg ha-1 of biosolid + bio-stimulator. Soil covering and productivity indexes showed no significant differences, if we consider the mineral fertilizing treatments and those with increasing levels of biosolid residues, in the absence of bio-stimulator. All treatments with bio-stimulator showed negative effects over soil recovering and S. guianensis productivity. The research suggests that the biosolid residues produced by ETE present appropriate characteristics for recovering degraded soil, replacing mineral fertilizing, as long as sanitary and environmental quality can be assured.

Descrição

Palavras-chave

Lodo de esgoto, Biossólido, Área degradada, Bio-estimulador, Sewage sludge, Biosolid residue, Degraded areas, Bio-stimulator

Citação

GODOI, Emiliano Lôbo de; BORGES, Jácomo Divino; LEANDRO, Wilson Mozena. Índices de cobertura vegetal e fitomassa de Stylosanthes guianensis Cv. mineirão em área degradada, fertilizada com adubo mineral e biossólido. Pesquisa Agropecuária Tropical, Goiânia, v. 38, n. 1, p. 21-26, jan./mar. 2008. Disponível em: <https://www.revistas.ufg.br/pat/article/view/3622/3414>.