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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Reclaimed wastewater: Effects on citrus nutrition

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Author(s):
Pereira, B. F. F. [1, 2] ; He, Z. L. [1] ; Stoffella, P. J. [1] ; Melfi, A. J. [3]
Total Authors: 4
Affiliation:
[1] Univ Florida, Indian River Res & Educ Ctr, Inst Food & Agr Sci, Ft Pierce, FL 34945 - USA
[2] Univ Fed Amazonas UFAM, Setor Sul, Fac Ciencias Agr, BR-69077000 Manaus, AM - Brazil
[3] Univ Sao Paulo, Nucleo Pesquisa Geoquim & Geofis Litosfera NUPEGE, BR-13418900 Piracicaba, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Agricultural Water Management; v. 98, n. 12, p. 1828-1833, OCT 2011.
Web of Science Citations: 36
Abstract

The effects of irrigation with reclaimed wastewater (RWW) were compared with well water (WW) on citrus (Citrus paradisi Macfad. X Citrus aurantium L) nutrition. The deviation from the optimum percentage (DOP) index of macro- and micro-nutrients were used to evaluate the nutritional status: optimal (DOP = 0), deficiency (DOP < 0) or excess (DOP > 0). After 11 years of RWW irrigation the influence on nutrient concentration in plants decreased in the order: B > Zn > Mn = Ca > Cu > Mg > P > K. Reclaimed wastewater irritation positively affected citrus nutrition as it rendered the concentration of macronutrients, i.e. P, Ca, and K. closer to their optimum levels (Sigma DOP(macro) = 7). However micro-nutrients tended to be excessive in plants (EDOP(micro) = 753) due to imbalanced supply of these elements in the RWW, particularly, for B and Cu. Citrus groves with long-term RWW irrigation may exercised caution in monitoring concentrations of B and Cu to avoid plant toxicity and soil quality degradation. (C) 2011 Elsevier B.V. All rights reserved. (AU)