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| Titel |
Surface application of mixtures of cattle manure vermicompost (VEB) with dolomitic lime (CD) and phosphogypsum (FY) to improve Ultisols. Study in simulated soils columns. |
| VerfasserIn |
Gabriel Gasco, Juan Barcenas, Roberto López, Jacqueline Hernández, Miguel Larrea |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250057803
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| Zusammenfassung |
| Toxicity of Al is considered the main factor that restricts the growth of plants in acid soils.
Liming is a feasible technique to neutralize the acidity of the surface soil, with slow or
no effect on subsoils. Gypsum has no the same neutralizing effect, but has higher
solubility and mobility being used to improve acid subsoils. Organic residues such as
vermicompost also reduce soluble Al and increases pH of acidic soils and subsoils.
This work has as objective to study the effect of surface application of mixtures of
cattle manure vermicompost (VEB), with dolomitic lime (CD), and phosphogypsum
(FY) on chemical properties of two simulated in columns Ultisol, belonging to the
moisture regimes Udic and Ustic, amendment material was apply superficially to the
column individually and mixed in different proportions. The treatments containing
VEB induced changes in soil and subsoil. Individual application of VEB in the
Ustic area promoted increments in the exchangeable K. The rest of the observed
effects occurred in soil and subsoil of the Udic area such as reductions in levels of
exchangeable Al3+ and increased of the ECEC, Ca2+, Mg2+, and exchangeable K+. |
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