TITLE:
The Cumulative Effects of Sewage Sludge Compost on Raphanus sativus L: Growth and Soil Properties
AUTHORS:
Vanessa N. Lima, Ricardo V. Trótski O. Silva, Patrícia Nunes, Paulo H. da Silva, Kyriale Morant, Rosileide F. S. Andrade, Aline E. Nascimento, Galba M. Campos-Takaki, Arminda Saconi Messias
KEYWORDS:
Sewage Sludge, Productivity, Soil, Solid Waste, Raphanus sativus L.
JOURNAL NAME:
Green and Sustainable Chemistry,
Vol.6 No.1,
February
16,
2016
ABSTRACT: The main goal of this research study was to establish the physicochemical characteristics of sewage sludge, and the nutrients needed to enhance the properties of soil with a view to exploiting were potential for agriculture. The example used was the cultivation of radish (Raphanus sativus). The findings are intended as a contribution towards making agriculture sustainable. This study was carried out to assess the response of radish (Raphanus sativus L.) to doses of sewage sludge applied in medium texture soils, and the socioeconomic contributions that such cultivation of radish would make. Levels of 0.25 and 75 ton/ha of sewage sludge plus the equivalent dose of 25 ton/ha of sewage sludge vermin compost by California Red were used after making a randomized experimental design with three replicates. 30 days after sowing radish seeds, the following data were collected: the number of leaves per plant (NLP); plant height (PH in cm); root diameter (RD) and tubercle production (TP ton/ha). In addition, the pH, EC-electric conductivity (EC), and soil organic matter (SOM) were determined. Statistical analysis showed that 25 and 50 tons/ha gave the best results for the parameters assessed. The estimated increase in family mean income from selling radish crops fertilized with sewage sludge is around 17%.