Sewage sludge compost in zoysia grass sod production

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2019-01-01

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This study evaluated whether the use of composted sewage sludge in zoysia grass sod production can partially or completely substitute fertilization based on urea. The experiment was conducted on a sod farm located in Itapetininga, São Paulo State, Brazil. The experimental design was a complete randomized block design with five replications and experimental plots of 5 m 2 in a 2x6 factorial scheme. The first factor was the method of application (single or split), and the second factor was composted sewage sludge fertilization and two controls (no fertilization and a standard dose of conventional fertilizer). The conventional fertilizer (urea) dose corresponds to 300 kg N ha -1 and the sewage compost doses correspond to 100, 200, 300, and 400 kg N ha -1 . The experiment began with the liming of the total area at 60 days after the previous harvest of zoysia grass sod. Three methods were used to evaluate sod production: soil cover rate, green color intensity, and leaf analysis. At 212 days after the beginning of the experiment, the compost treatment of 30 Mg ha -1 (300 kg ha -1 of N), applied in a single dose, allowed for complete sod formation (100% soil cover rate).

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Inglês

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Revista Ambiente e Agua, v. 14, n. 1, 2019.

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