Sewage sludge compost in zoysia grass sod production

• Autor(a) principal: Mota, Flávia Diniz [UNESP]
• Data de Publicação: 2019
• Outros Autores: Bôas, Roberto Lyra Villas [UNESP], Mateus, Caroline de Moura D’Andréa [UNESP], Silva, Tatiane Bortoletto Gomes da [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.4136/ambi-agua.2301; http://hdl.handle.net/11449/188903
• topic: Nitrogen; Organic fertilization; Soil cover rate; SPAD; Turfgrass

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).