Treatment of an Acid Soil with Bentonite Used for Wine Fining: Effects on Soil Properties and the Growth of Lolium multiflorum
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- 作者：Manuel Arias-Esté ; vez ; Eugenio Ló ; pez-Periago ; Juan C. Nó ; voa-Muñ ; oz ; Ana Torrado-Agrasar ; Jesus Simal-Gá ; ndara
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2007
- 出版时间：September 5, 2007
- 年：2007
- 卷：55
- 期：18
- 页码：7541 - 7546
- 全文大小：144K
- 年卷期：v.55,no.18(September 5, 2007)
- ISSN：1520-5118
文摘
When used to fine wines, bentonite acquires a protein load that makes it a potentially useful fertilizer.Other properties of bentonite are also potentially useful for soil amendment. In the work described inthis paper, waste bentonite from a winery was applied to an acid soil, and its effects on soil propertiesand on the growth of Lolium multiflorum were evaluated. Soil N, K, and P contents all increased, asdid pH and cation exchange capacity. Biomass production increased as the dose of bentoniteincreased up to 5 g kg-1, decreasing at larger doses (possibly as a result of falling potassium/magnesium ratio and increasing electrical conductivity). Environmental drawbacks of waste bentoniteinclude its high soluble copper content, although its conversion in the soil to less soluble forms reducesits potential phytotoxicity. The copper, manganese, and zinc contents of the ryegrass crop were low.