Lodo de esgoto como substrato para produção de mudas de Tectona grandis L.

CERNE

Trazzi, Paulo André²  Gomes, Daniele Rodrigues¹  Gonçalves, Elzimar de Oliveira¹  Caldeira, Marcos Vinicius Winckler¹  Delarmelina, William Macedo¹ 

[1] Universidade Federal do Espírito Santo, Alegre, Brasil$$;Universidade Federal do Paraná, Curitiba, Brasil$$

关键词: Biosolid;    morphological characteristics;    seedling quality.;   

DOI  :  10.1590/S0104-77602013000100015

来源: Universidade Federal de Lavras-UFLA

【 摘 要 】

The sewage sludge is a waste from sewage treatment plants, which can be used in formulations of substrates for seedling production. This study aimed to evaluate the effects of different proportions of sewage sludge, soil and commercial substrate on the growth characteristics of Tectona grandis seedlings in tubes of 120 cm³ volume capacity. The sewage sludge used came from the STP's Cachoeiro de Itapemirim / ES. The seedlings were grown in the forest nursery / CCA / UFES. The statistical design used in the experiment was completely randomized design (CRD) with six treatments and five replications. The treatments constituted of sewage sludge : commercial substrate: soil (v: v: v), which corresponded to 20:70:10 (T1), 40:50:10 (T2), 60:30:10 (T3), 80 : 10:10 (T4), 90:0:10 (T5) and the control treatment with 0:90:10 (T6). All variables assessed were significant at the 5% level of probability. The control (T6) showed results statistically equal to or lower than the treatments T3 with 60% of sewage sludge concentration (T3). It follows then that the use of sewage sludge in seedling production is feasible and promising, however, used in a proper proportion.

【 授权许可】

Unknown