Artículos de revistas
Reclaimed wastewater: Effects on citrus nutrition
Fecha
2011Registro en:
AGRICULTURAL WATER MANAGEMENT, v.98, n.12, p.1828-1833, 2011
0378-3774
10.1016/j.agwat.2011.06.009
Autor
PEREIRA, B. F. F.
HE, Z. L.
STOFFELLA, P. J.
MELFI, A. J.
Institución
Resumen
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.