Produtividade de Stylosantes guianensis cv. mineirão em resposta ao efeito residual de biossólido em área degradada
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Data
2008-09
Título da Revista
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Editor
João Batista Duarte
Resumo
The present study evaluated the residual effect of sewer
sludge produced in the ‘Estação de Tratamento de Esgoto’ (ETE),
in Goiânia, Goiás State, Brazil, treated with 50% (v/v) of CaO
and a bio-stimulator on the Stylosanthes guianensis cv. Mineirão
fitomass yield, at two harvest dates. The first cut occurred 150
days after sowing, and the second, 273 days after the first harvest
(423 days old). Eight treatments were evaluated: control; mineral
fertilization; 20 Mg ha-1 biosolid; 20 Mg ha-1 biosolid + biostimulator;
40 Mg ha-1 biosolid; 40 Mg ha-1 biosolid + biostimulator;
60 Mg ha-1 biosolid; 60 Mg ha-1 biosolid + biostimulator.
The experimental design was randomized complete
blocks, with four replications. In the first harvest, the yield did
not show significant differences between the mineral fertilization
treatments and the treatments with increasing biosolid doses
without bio-stimulator. All treatments with bio-stimulator
showed negative effects on S. guianensis yield. In the second
harvest, it was noticed a tendency to increasing yields for all
treatments, except for the treatment that received chemical
fertilization. The yield obtained in the treatments that received
bio-stimulator were similar to the control and significantly lower
than for other treatments. The results suggest the existence of a
biosolid residual effect.
Descrição
Palavras-chave
Lodo de esgoto, Biossólido, Áreas degradadas, Bio-estimulador, Sewer sludge, Biosolid, Degraded areas, Biostimulator
Citação
GODOI, Emiliano Lôbo de; BORGES, Jácomo Divino; XIMENES, Paulo Alcanfor; LEANDRO, Wilson Mozena. Produtividade de Stylosantes guianensis cv. mineirão em resposta ao efeito residual de biossólido em área degradada. Pesquisa Agropecuária Tropical, Goiânia, v. 38, n. 3, p. 158-163, jul./set. 2008. Disponível em: <https://www.revistas.ufg.br/pat/article/view/4662>.