Managing the value of composts as organic amendments and fertilizers in sandy soils

Nutrient rich composts are employed at low rates to minimize risks of N and P losses; this limits their value as soil improvers through C addition and the build up of soil organic matter. Blending with nutrientpoor composts such as those from the organic fraction of municipal solid waste could reduc...

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Autores principales: Castán, Elisa, Satti, Patricia, González Polo, Marina, Iglesias, María Cándida, Mazzarino, María Julia
Formato: Artículo
Lenguaje:Inglés
Publicado: Elsevier B.V. 2021
Materias:
Biosolids
Animal manures
Municipal solid waste
Compost mixtures
Organic matter
Nutrients
Ca carbonates
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/28377
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-28377
record_format dspace
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Biosolids
Animal manures
Municipal solid waste
Compost mixtures
Organic matter
Nutrients
Ca carbonates
spellingShingle Biosolids
Animal manures
Municipal solid waste
Compost mixtures
Organic matter
Nutrients
Ca carbonates
Castán, Elisa
Satti, Patricia
González Polo, Marina
Iglesias, María Cándida
Mazzarino, María Julia
Managing the value of composts as organic amendments and fertilizers in sandy soils
topic_facet Biosolids
Animal manures
Municipal solid waste
Compost mixtures
Organic matter
Nutrients
Ca carbonates
description Nutrient rich composts are employed at low rates to minimize risks of N and P losses; this limits their value as soil improvers through C addition and the build up of soil organic matter. Blending with nutrientpoor composts such as those from the organic fraction of municipal solid waste could reduce the risks of nutrient losses while maintaining the positive effects on soil organic matter. We conducted a 2-yr experiment with composts of diverse origin: organic fraction of municipal solid waste (MC), cattle feedlot manure (FC), poultry litter (PC) and biosolids (BC), alone or blended (FC-MC, PC-MC) in a sandy soil under the humid warm climatic conditions of NE Argentina. We studied the effects of a single application (40 Mg ha 1 ) on the surface soil (0–10 cm) properties of a permanent subtropical pasture through annual chemical and biological analyses. On five dates, available N and P were also determined at 0–10 cm and 55–65 cm. Soil total C and N increased over time while potential N mineralization and CO2 emission decreased. All amendments resulted in similar increments of soil C and N despite marked differences in quantity and quality of organic matter inputs. Because MC had substantial amounts of Ca carbonates, it contributed to a reduction of available P from manure composts through dilution and precipitation. The release of available P from biosolids composts (where P is bound to Fe and Al) was lower than from manure composts (where P is bound by Ca phosphates). The highest environmental risk from compost application would likely be the leaching of soluble N produced during the composting process and released immediately after field application. Blending with N-poor MC would contribute to nitrate dilution.
format Artículo
author Castán, Elisa
Satti, Patricia
González Polo, Marina
Iglesias, María Cándida
Mazzarino, María Julia
author_facet Castán, Elisa
Satti, Patricia
González Polo, Marina
Iglesias, María Cándida
Mazzarino, María Julia
author_sort Castán, Elisa
title Managing the value of composts as organic amendments and fertilizers in sandy soils
title_short Managing the value of composts as organic amendments and fertilizers in sandy soils
title_full Managing the value of composts as organic amendments and fertilizers in sandy soils
title_fullStr Managing the value of composts as organic amendments and fertilizers in sandy soils
title_full_unstemmed Managing the value of composts as organic amendments and fertilizers in sandy soils
title_sort managing the value of composts as organic amendments and fertilizers in sandy soils
publisher Elsevier B.V.
publishDate 2021
url http://repositorio.unne.edu.ar/handle/123456789/28377
work_keys_str_mv AT castanelisa managingthevalueofcompostsasorganicamendmentsandfertilizersinsandysoils
AT sattipatricia managingthevalueofcompostsasorganicamendmentsandfertilizersinsandysoils
AT gonzalezpolomarina managingthevalueofcompostsasorganicamendmentsandfertilizersinsandysoils
AT iglesiasmariacandida managingthevalueofcompostsasorganicamendmentsandfertilizersinsandysoils
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bdutipo_str Repositorios
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