Impacts caused by the addition of wine vinasse on some chemical and mineralogical properties of a Luvisol and a Vertisol in La Mancha (Central Spain)

Abstract

Background, aim, and scope Using wastewaters from wine production that are often discharged directly into soil, with previous treatment, we carried out an experiment to identify the impact over time, specifically to identify the benefits and risks of its application. Materials and methods Experiments were carried out using approximately 200 g of samples of agricultural soils which were amended with increased amounts of vinasse: 1-5-10-20-40-70 ml. The doses used were not arbitrary but similar to the usual one amended. Soil electric conductivity was determined in distilled water with a glass electrode (soil to H 2 O ratio 1:5). Clay identification of soil samples are by Xray diffraction. Results The pH decreased slightly and salinity increased, possibly leading to changes in crop productivity. The increase in salinity reflects the concentration of dissolved salts in the vinasse. Significant changes were observed in the clay minerals after amendment with the vinasse. Conclusions Our study indicates that, under experimental incubation, the application of increasing doses of wine vinasse for increasingly long periods can affect certain chemical properties. The results show that application of winery wastewaters to soil results in significant increases of electrical conductivity, reaching levels that can be detrimental to crop growth. The decrease in pH values is somehow beneficial, and finally there is a small increase in the chemical weathering of clay minerals

Effect of Irrigation with Diluted Winery Wastewater on Cations and pH in Four Differently Textured Soils

“…In contrast, the application of wine vinasse containing high bicarbonate slightly reduced the pH of a Mediterranean soil (Bueno et al, 2009). The pH reduction was attributed to the high electrical conductivity of the soil solution (EC e ), viz.…”

Filter Cake and Vinasse as Fertilizers Contributing to Conservation Agriculture

“…The beneficial effects and risks of applying vinasse from wine production to the soil over extended periods have been studied in Spain [23]. The treatment resulted in increased soil electrical conductivity and a small decrease in pH.…”

“…The environmental damage caused by discarding vinasse into the soil or running waters was an incentive to studies aiming to find alternative, economic applications for this residue. Results from such studies indicate that, properly used, vinasse contributes to improvements in soil quality [15][16][17][18][19][20][21][22][23][24][25] and agricultural productivity [19,[24][25][26][27][28][29][30].…”

Sorção de potássio em amostras de solo submetidas à aplicação de vinhaça

“…Conforme Queiroz (2002), como as argilas apresentam maior capacidade de troca iônica e, consequentemente, maior também será a sorção, sobretudo de cátions; a Amostra 2 é também a amostra com maior valor de CTC, em especial por possuir maior quantidade de argila, que tem carga negativa na superfície de suas partículas, favorecendo a troca de cátions, fator sumamente relevante na retenção do cátion potássio (K + ), que se apresenta em maior quantidade nesta amostra. Bueno et al (2009) concluíram, pesquisando o impacto causado pela adição de vinhaça nas propriedades de dois solos, um de textura arenosa e outro de textura argilosa (Vertissolo), que o Vertissolo tem maior capacidade de retenção da concentração salina introduzida pela aplicação da vinhaça, devido ao alto teor de argila; os autores afirmam, ainda, que o aumento na salinidade pode afetar algumas propriedades biológicas e bioquímicas dos solos.…”