Coffee processing residues as a soil potassium amendment

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dc.contributor.authorZoca, Samuel Menegatti [UNESP]
dc.contributor.authorPenn, Chad J.
dc.contributor.authorRosolem, Ciro Antonio [UNESP]
dc.contributor.authorAlves, Alexandre Ricardo [UNESP]
dc.contributor.authorOliveira Neto, Leontino [UNESP]
dc.contributor.authorMartins, Maximila Miranda [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionOklahoma State University
dc.date.accessioned2016-04-01T18:46:06Z
dc.date.available2016-04-01T18:46:06Z
dc.date.issued2014
dc.description.abstractIntroduction Total coffee production in the world in 2013 was 8.7 million Mg of coffee beans. Coffee must be processed after harvest to separate beans from the husk, and the post-harvest process can generate different types of residues. Knowing that 50 % of the harvested coffee is husk, it is important to consider that these by-products can contribute to environmental problems if not disposed of properly. There is a need to find alternatives to the piling of coffee husk as a means of disposal at coffee farms. The objectives in this experiment were to characterize five types of coffee processing residues and assess their value as potassium (K) fertilizer by examining K release. Results Chemical characteristics of coffee residues varied with processing method, such as wet and dry processes. Application of residues to soil columns followed by 40 weeks of simulated leaching increased total K content in the soil for all treatments based on application rate, except for enriched and three-year composted coffee husk (3ycomp). Coffee processing residues had higher concentrations of K leached compared with the control with no K application, but only 3ycomp was higher than other coffee processing residues. Total K released from coffee residues increased linearly with application rate, but the decomposition of the coffee residues was low, which suggest that K release from coffee processing residues is not related to decomposition. Conclusion Post-harvest coffee processes impacted concentrations of K, nitrogen, carbon, cellulose, hemicellulose, lignin, phenol, pH, and electrical conductivity among the coffee processing residues. The K release was high (over 90 %), but it did not depend on the type of coffee processing residue, and thus, the residues can be a substitute for a mineral source of K applied to soils. The use of coffee processing residues as source of K did not prevent K losses by leaching. Some coffee residues resulted in greater K leaching than mineral KCl applied at the same rate.en
dc.description.affiliationOklahoma State University, Plant and Soil Science Department
dc.description.affiliationUnespUniversidade Estadual Paulista, Departamento de Produção e Melhoramento Vegetal, Faculdade de Ciências Agronômicas de Botucatu
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent155-165
dc.identifierhttp://dx.doi.org/10.1007/s40093-014-0078-7
dc.identifier.citationInternational Journal of Recycling of Organic Waste in Agric, v. 3, n. 4, p. 155-165, 2014.
dc.identifier.doi10.1007/s40093-014-0078-7
dc.identifier.issn2195-3228
dc.identifier.lattes5720775873259528
dc.identifier.orcid0000-0003-2001-0874
dc.identifier.urihttp://hdl.handle.net/11449/137532
dc.language.isoeng
dc.relation.ispartofInternational Journal of Recycling of Organic Waste in Agric
dc.rights.accessRightsAcesso restrito
dc.sourceCurrículo Lattes
dc.subjectCoffee husken
dc.subjectCoffee hullsen
dc.subjectPotassiumen
dc.subjectCompostingen
dc.subjectGypsumen
dc.subjectLeachingen
dc.titleCoffee processing residues as a soil potassium amendmenten
dc.typeArtigo
unesp.author.lattes5720775873259528[3]
unesp.author.orcid0000-0003-2001-0874[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agronômicas, Botucatupt
unesp.departmentProdução e Melhoramento Vegetal - FCApt

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Botucatu - FCA - Faculdade de Ciências Agronômicas