Evaluation of distillery effluent application effect on physico-chemical properties and exchangeable sodium content of sodic soils

Abstract

Effect of distillery effluent (DE) application on electrical conductivity (EC), pH, organic carbon (OC), exchangeable Na, Ca, Mg, K content and exchangeable sodium percentage (ESP) of sodic soils of sandy loam (Hyperthermic family of Typic Haplaquept), silt loam (Hyperthermic family of Typic Haplaquept) and clay loam (Hyperthermic family of Typic Udic Ustochrept) textures was evaluated in a laboratory experiment. Six amendments, encompassing distilled water, DE solutions of four concentrations viz. 10%, 20%, 30% and 40%, and gypsum equivalent to 100% gypsum requirement (GR) were used to reclaim soils of 20, 40, 60 and 80 ESP class. Application of DE reduced pH and exchangeable Na content and increased OC, exchangeable Ca, Mg and K content of the soils appreciably but EC marginally. Magnitude of reduction in ESP was dependent on concentration of DE solution and the highest reduction in ESP of soil was observed with the application of 40% solution of DE. Extent of reduction in ESP with application of same concentration of DE was also found to be dependent on clay content of soil. It was relatively less in clay loam soil as compared to sandy loam soil. Results of this study thus indicated that distillery effluent could effectively be used in amending sodic soils of varying textures and ESP for improving their physico-chemical properties and reducing exchangeable sodium content.

Significance of vinasses waste management in agriculture and environmental quality- Review

“…Across the world, vinasse application in agriculture have been reported positive feedback to soil properties for bulk density, porosity, water retention, stable aggregates and structure formation, infiltration, hydraulic conductivity, soil reaction, nutrient availability, improved nutrient use efficiency and soil biochemical properties eventually on crop growth and developments (Pathak et al, 1999;Armengol et al, 2003). In Cuba, 40 years of irrigation practices in sugarcane crops with vinasse contained 11 to 15% of dissolved organic carbon and increased the soil organic carbon to about 40 to 500% in ultisols and similar observation have been obtained for different soils, crops and cropping systems across the countries (Ao et al, 2009;Escober et al, 1966;Tejada and Gonzalez, 2007;Gupta and Khan, 2009). In short as well as long-term, vinasses application improved aggregate formation and its stability across the soil orders (Hati et al, 2006;Cunha et al, 1987).…”

Concentração da vinhaça por microfiltração seguida de nanofiltração

“…Com o objetivo de estudar o uso da vinhaça concentrada na adubação de soqueira de canade-açúcar, Barbosa et al (2006), utilizaram vinhaça concentrada contendo 40,75 kg/m³ de K 2 O, e os resultados indicaram que o uso promoveu acréscimo de produtividade de cana e de açúcar por área colhida, podendo substituir com vantagem o uso de adubos minerais em doses equivalentes de NK ou com complementação nitrogenada. Em seu estudo, Gupta & Khan (2009), avaliaram o efeito da aplicação de efluentes de destilaria com diferentes diluições, contendo 10780 mg/L de potássio e 460 mg/L de sódio, nas propriedades físico-químicas e teor de sódio trocável em solos sódicos. A aplicação do efluente permitiu a redução de pH e sódio trocável, e aumentou o teor de carbono orgânico e o conteúdo de Ca, Mg e K trocáveis.…”