2009
DOI: 10.1590/s0103-90162009000200014
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Soil exchangeable cations, sugarcane production and nutrient uptake after wastewater irrigation

Abstract: Wastewater irrigation may benefit agricultural crops with water and essential nutrients (mainly nitrogen), also affecting soil chemistry. The effects of effluent irrigation on yield, stalk nutrient uptake and on soil chemistry over 16 months were studied in a sugarcane (Saccharum spp.) crop growing on an Oxisol in Lins, State of São Paulo, Brazil. Irrigated plots received 50% of the recommended mineral-N fertilization and 100, 125, 150 or 200% of the crop water demand, while control plots received neither addi… Show more

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Cited by 37 publications
(54 citation statements)
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“…The release of this cation by organic matter mineralization was retained in the surface layer (Table 4), and it may explain its higher concentration in this depth. The increase of Ca 2+ in this layer, as result of wastewater irrigation, was reported by Leal et al (2009a). On the other hand, Herpin et al (2007) found an increase with depth, involving leaching, plant uptake and reaction of Ca 2+ with carbonates and sulfates, which were present in the applied effluent.…”
Section: Resultsmentioning
confidence: 66%
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“…The release of this cation by organic matter mineralization was retained in the surface layer (Table 4), and it may explain its higher concentration in this depth. The increase of Ca 2+ in this layer, as result of wastewater irrigation, was reported by Leal et al (2009a). On the other hand, Herpin et al (2007) found an increase with depth, involving leaching, plant uptake and reaction of Ca 2+ with carbonates and sulfates, which were present in the applied effluent.…”
Section: Resultsmentioning
confidence: 66%
“…Increments in Mg 2+ concentration due to the wastewater application were also observed by Sandri et al (2009). However, Kiziloglu et al (2008), Leal et al (2009a), and Varallo et al (2010) found no significant effect of wastewater irrigation on Mg 2+ content in soil.…”
Section: Resultsmentioning
confidence: 77%
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“…Deon et al (2010) também observaram que o máximo potencial produtivo de 148,89 Mg ha -1 foi obtido com o maior tratamento de lâmina de efluente de esgoto doméstico tratado, referente a 200% da evapotranspiração da cultura. Leal et al (2009) observaram, trabalhando com a cana-deaçúcar irrigada com efluente de esgoto doméstico tratado nos níveis de irrigação correspondentes a 100, 125, 150 e 200% da demanda hídrica da cultura, uma produtividade máxima de 247 Mg ha -1 , com a lâmina de água equivalente a 100% da reposição hídrica sendo esta a mais recomendada pelos referidos autores visando ao manejo da irrigação da cultura. Este valor de produtividade de colmos se aproxima do observado no presente trabalho, de 257,7 Mg ha -1 , obtido com 100% da ECA, para irrigação com efluente de esgoto doméstico tratado.…”
Section: Resultsunclassified
“…Al respecto, se puede citar a Merhaut (2007), quien menciona que las defi ciencias de Mg pueden estar asociadas por sus relaciones antagónicas con el Na, así como con otros nutrientes. No obstante, para el cultivo de la caña de azúcar, Leal et al (2009) aplicaron aguas residuales con excesos de Ca y Na y no lograron reportar efectos defi nidos para ambos nutrientes.…”
Section: Resultados Y Discusiónunclassified