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- Title
Concentración de nitrato, fosfato y boro en el agua residual para la irrigación de cultivos en Valle del Mezquital, Hidalgo.
- Authors
Pérez Díaz, José Pedro; Manue, Héctor; Escobar, Ortega; Ayala, Carlos Ramírez; Magdaleno, Héctor Flores; Sánchez Bernal, Edgar Iván; Can Chulim, Álvaro; Raú, Óscar; Villa, Mancilla
- Abstract
Introduction: Mexico City generates an approximate volume of wastewater of 57 m3 s-1, the wastewater is conduct by the drainage network: main channel-west interceptor-central emitter, and conducted to Hidalgo State, during it course, an important volume is poured into irrigation channels and is used for crop irrigation in the Mezquital Valley. Method: in this study, nitrate (NO3 -), phosphate (PO4-3) boron (B3+) and chloride (Cl- ) content in 188 wastewater samples was determined. The objective was to assessment the risk of toxicity by specific ions (B3+ and Cl-) and the nutrients content (N, P, K, Ca y Mg) in wastewater used for crop irrigation. Results: the nitrate (NO3 -) concentration was very heterogeneous (CV=59.83 %) and this was attributed to the lixiviation of nitrogen fertilizers. The maximum phosphate (PO4-3) value was 65.7 mg L-1, and its concentration was attributed to the discharge of household wastewater. The boron concentration (B3+) was less than 1.88 mg L-1. The risk of toxicity due to the use of wastewater in irrigation may cause a decrease the yield of sensitive crops, such as beans. Conclusion: untreated wastewater used in irrigation in Mezquital Valley, may cause toxicity problems in some crops; the nitrate and phosphate concentrations in wastewater of the Mexico City-Mezquital Valley drainage network were high, and these were attributed to the discharges of domestic and industrial wastewaters and to agricultural drainage, high concentrations of nitrate and phosphate represent a risk for aquatic organisms due to pollution and the possible eutrophication of water bodies. The risk of toxicity by B3+ and Cl- can have a negative effect on the germination and yield of bean crops.
- Publication
Nova Scientia, 2018, Vol 10, Issue 21, p97
- ISSN
2007-0705
- Publication type
Article
- DOI
10.21640/ns.v10i21.1478