Nitrogen forms, pH and total carbon in a soil incubated with treated sewage effluent

Brazilian Archives of Biology and Technology

Adriel Ferreira Da Fonseca²  Uwe Herpin¹  Carlos Tadeu Dos Santos Dias¹  Adolpho José Melfi¹ 

[1] ,Universidade Estadual de Ponta Grossa Departamento de Ciência do Solo e Engenharia Agrícola Ponta Grossa PR ,Brasil

关键词: Treated sewage effluent;    nitrogen;    carbon;    tropical soil;   

DOI  :  10.1590/S1516-89132007000500001

来源: SciELO

【 摘 要 】

In this study, an experiment under controlled conditions was carried out to determine the effects of secondary-treated sewage effluent (STSE) application on soil nitrogen concentrations (mineral and total), total carbon and soil pH. The soil and STSE used were collected at Lins, São Paulo State, Brazil. A completely randomized design was used, in completed factorial 4x11 (weekly application rates of 0, 100, 150 and 200 mL STSE per kg soil; and, eleven soil incubation periods from 0 to 10 weeks) with four replicates. The STSE was applied simulating common surface irrigation. Seven days after each incubation period, ammonium and nitrate contents were determined. Additionally, pH and total carbon and nitrogen contents were measured in the soil after 10 weeks. STSE application increased the nitrogen content (total and mineral - mainly as nitrate) and soil pH. For the total carbon content no differences were observed.

【 授权许可】

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