Reclaimed wastewater: Effects on citrus nutrition
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
18/10/2012
18/10/2012
2011
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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. FAPESP (Sao Paulo Research Foundation)[06/56419-6] University of Florida |
Identificador |
AGRICULTURAL WATER MANAGEMENT, v.98, n.12, p.1828-1833, 2011 0378-3774 http://producao.usp.br/handle/BDPI/19229 10.1016/j.agwat.2011.06.009 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE BV |
Relação |
Agricultural Water Management |
Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE BV |
Palavras-Chave | #Citrus paradisi #Macro-nutrients #Micro-nutrients #Plant nutrition #Wastewater irrigation #Water reuse #REDBLUSH GRAPEFRUIT TREES #OLERACEA-VAR.-ITALICA #HEAVY-METALS #CHEMICAL-PROPERTIES #SOIL #IRRIGATION #PLANT #VEGETABLES #SODICITY #ELEMENTS #Agronomy #Water Resources |
Tipo |
article original article publishedVersion |