Reclaimed wastewater: Effects on citrus nutrition

Autor(es)

Pereira, B. F. F. ^{[1, 2]} ; He, Z. L. ^[1] ; Stoffella, P. J. ^[1] ; Melfi, A. J. ^[3]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: Agricultural Water Management; v. 98, n. 12, p. 1828-1833, OCT 2011.
• Citações Web of Science: 36

Resumo

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)

• Processo FAPESP: 06/56419-6 - Alterações químicas no sistema solo/planta irrigado com esgoto tratado na cultura da laranja
• Beneficiário: Bruno Fernando Faria Pereira
• Modalidade de apoio: Bolsas no Brasil - Doutorado