Resumo

GONZALEZ-FRAGOZO, Harold E. et al. Effect of irrigation with treated wastewater on microbiological quality of the soil and King Grass. rev.udcaactual.divulg.cient. [online]. 2020, vol.23, n.2, e1513.  Epub 30-Jul-2020. ISSN 0123-4226.  https://doi.org/10.31910/rudca.v23.n2.2020.1513.

World water contamination and the lack of wastewater treatment plants pose potential problems concerning public health and on the environment. Therefore, countries are looking for reliable, safe and cost-effective methods to purify wastewater. On the other hand, the agricultural sector has taken a lot of momentum given the need to implement clean techniques that are friendly to the environment. boomed given the need to implement clean techniques that are friendly to the environment. Wastewater irrigation in agriculture has become common in arid and semi-arid regions due to low water availability, but its use requires careful monitoring of hygiene parameters. The objective of this work was to analyze the effect of treated wastewater on microbiological contamination of the soil and King grass, in addition to the production of dry matter from forage. Were evaluated three treatments: T1: no risk; T2: groundwater and T3: treated wastewater. Were made physicochemical and microbiological analyzes out on water, soil and grass. The microbiological contamination in the soil irrigated with treated wastewater did not show significant differences compared to the soils where irrigation with groundwater was applied, as well as there were no statistical differences between microbiological variables in grass. It was concluded that the source of microbiological contamination of pastures and soil is not only related to the microbial load present in the wastewater, but it may be due, among other factors, to runoff and the use of contaminated groundwater for irrigation.

Palavras-chave : Microbiological contamination; Dry matter; Biofertilization; Reuse; Sustainability.

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