Industrial saline wastewater in a corn-soybean rotation to enhance crop yield without compromising soil health in a subtropical soil

Fink, Jessé Rodrigo; Sánchez‐Rodríguez, Antonio Rafael; Frosi, Gustavo; Eckert, Dayana; Bonetti, J. A.; Bastiani, Kayn; Lavratti, Andressa Ferreira; Inda, Alberto Vasconcellos; Zanquetti, Aline

doi:10.1016/j.jenvman.2021.113341

Cited by 4 publications

(1 citation statement)

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“…Irrigation with swine wastewater diluted to 50% in soils with medium texture (Red-Yellow Oxisol) and clayey texture (Red-Yellow Ultisol) increased the levels of N, K, Ca, Mg and Zn in the aerial part of corn (Cunha et al, 2021). Futhermore, industrial saline wastewater application (0, 10, 20, 40 and 60 m 3 ha -1 year -1 ) in a corn-soybean rotation on an Oxisol significantly increased corn (all rates) and soybean (only with the highest rate) yields around 103 -250% and 50%, respectively, in comparison with no wastewater application, but the use of high rates of that wastewater could cause soil salinization (Fink et al, 2021). In Australia, silage maize and sweet corn were grown with municipal and industrial wastewater irrigation compared to freshwater irrigation with and without fertilizer.…”

Section: Irrigation and Fertirrigation Managementmentioning

confidence: 96%

Corn crop responds positively to fertigation with black water from sewage treated by decentralized anaerobic system

et al. 2022

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The basic sanitation systems are not enough to meet the sanitary requirements in the rural areas of Brazil. Hence, a decentralized anaerobic system was developed by Embrapa to enable the treatment of domestic sewage. The treated sewage effluent (TSE) should be applied to completely replace the N from mineral fertilizer required by corn plants, a typical crop cultivated by Brazilian smallholder farmings for animal feed. Hence, the purpose of this study was to investigate the corn crop responses to the use of TSE as fertilizer. A field experiment was carried out in a sandy clay loam soil at São Carlos, state of São Paulo, Brazil, over 2018-2019 summer growing season of a hybrid corn cultivar with dual aptitude (grain and silage production). Four treatments about application of different nutrient sources were evaluated in a randomized block design with three replications: 1- NPK: urea, simple superphosphate and potassium chloride as nutrient sources; 2- EfPK: TSE as N source + PK from mineral fertilizers; 3- Ef: TSE only; 4- PK: mineral fertilizers only. TSE was applied to crop by short and closed-end furrow irrigation. TSE can be used as a source of nitrogen mainly and other nutrients for corn crop nutrition based on the knowledge of effluent nutrient concentrations. TSE split application through fertirrigation can lead to corn yield parameters close to those from NPK application using only mineral fertilizers as nutrient sources. The reuse of this wastewater is feasible for small-scale corn production which is typical of Brazilian smallholder farming.

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Section: Irrigation and Fertirrigation Managementmentioning

confidence: 96%