期刊名称：INTERNATIONAL JOURNAL OF RECYCLING OF ORGANIC WASTE IN AGRICULTURE
印刷版ISSN：2195-3228
电子版ISSN：2251-7715
出版年度：2020
卷号：9
期号：2
页码：161-170
DOI：10.30486/ijrowa.2020.1890190.1020
语种：English
出版社：ISLAMIC AZAD UNIVERSITY, KHOURASGAN BRANCH
摘要：Purpose The overharvesting of the endemic palm tree emEuterpe edulis/em Mart. (Arecaceae) from the Brazilian Atlantic Forest hotspot and the destination given to the sludge produced from urban sewage treatment are both serious environmental issues caused by human activities. In order to find solutions or alternatives for both the issues, we aimed to investigate the effect of increasing rates of a sewage sludge organic fertilizer (SSOF), produced by composting sewage sludge and solid waste, on the initial growth of emE. edulis/em.br / Methods We mixed sand with 0, 62.5, 125, and 250 kg·msup−3/sup of SSOF in 8 L (21 cm height × 24 cm top diameter × 20.5 cm base diameter) pots and then planted a seedling of emE. edulis/em in each pot. We assessed the seedlings’ height and stem diameter relative growth rate (RGR), biomass, root to shoot ratio, and shoot macronutrient (nitrogen, phosphorous, potassium, calcium, magnesium, and sulphur) concentrations in relation to fertilizer levels. We also evaluated the relation between plant height and diameter over time for each fertilization level.br / Results We found that height and stem diameter RGRs, biomass accumulation, and N and P shoot concentrations of emE. edulis/em were positively related to SSOF levels between 120 and 250 kg·msup−/supsup3/sup in the substrate.br / Conclusions Our study demonstrates that SSOF can be further used as an alternative to sewage sludge disposal and contribute to emE. edulis/em cultivation, and, hence, its conservation.
