Comparison of three systems of decomposition of agricultural residues for the production of organic fertilizers

ABSTRACT Organic wastes (OW) of diverse nature must be subjected to controlled decomposition processes to avoid risks of contamination and obtain products useful for agriculture. The objective of the present study was to compare over time physical, chemical and enzymatic parameters of OW transformed...

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Autores principales:	Sánchez-Rosales,Rocío, Hernández-Rodríguez,Adriana, Ojeda-Barrios,Dámaris, Robles-Hernández,Loreto, González-Franco,Ana Cecilia, Parra-Quezada,Rafael
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2017
Materias:	Compost semicomposting vermicomposting.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000300287
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spelling	oai:scielo:S0718-583920170003002872017-11-09Comparison of three systems of decomposition of agricultural residues for the production of organic fertilizersSánchez-Rosales,RocíoHernández-Rodríguez,AdrianaOjeda-Barrios,DámarisRobles-Hernández,LoretoGonzález-Franco,Ana CeciliaParra-Quezada,Rafael Compost semicomposting vermicomposting. ABSTRACT Organic wastes (OW) of diverse nature must be subjected to controlled decomposition processes to avoid risks of contamination and obtain products useful for agriculture. The objective of the present study was to compare over time physical, chemical and enzymatic parameters of OW transformed as vermicomposting (VC), semicomposting (SC) and composting (CP) for elaboration of organic fertilizers. A mixture of bovine manure and sawdust was subjected to each of three systems for 183 d. Temperature, total N (Nt), organic C (OC), C/N ratio, pH, enzymatic urease activity (EUA), germination index (GI) and electrical conductivity (EC) were measured throughout the time of study. The variables evaluated showed significant differences between time and treatment. The temperature ranged between 20 and 34 °C in VC and SC, while in CP between 20 and 61 °C. All three systems reduced the C/N ratio to less than 15/1. The CP product had higher pH, EC, and EUA values than both VC and SC. The VC product had the highest GI values. All the products obtained at 183 d were within the parameters to be considered as organic fertilizers, but the SC product transformed into an organic fertilizer fastest and had least water usage.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.77 n.3 20172017-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000300287en10.4067/S0718-58392017000300287
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Compost semicomposting vermicomposting.
spellingShingle	Compost semicomposting vermicomposting. Sánchez-Rosales,Rocío Hernández-Rodríguez,Adriana Ojeda-Barrios,Dámaris Robles-Hernández,Loreto González-Franco,Ana Cecilia Parra-Quezada,Rafael Comparison of three systems of decomposition of agricultural residues for the production of organic fertilizers
description	ABSTRACT Organic wastes (OW) of diverse nature must be subjected to controlled decomposition processes to avoid risks of contamination and obtain products useful for agriculture. The objective of the present study was to compare over time physical, chemical and enzymatic parameters of OW transformed as vermicomposting (VC), semicomposting (SC) and composting (CP) for elaboration of organic fertilizers. A mixture of bovine manure and sawdust was subjected to each of three systems for 183 d. Temperature, total N (Nt), organic C (OC), C/N ratio, pH, enzymatic urease activity (EUA), germination index (GI) and electrical conductivity (EC) were measured throughout the time of study. The variables evaluated showed significant differences between time and treatment. The temperature ranged between 20 and 34 °C in VC and SC, while in CP between 20 and 61 °C. All three systems reduced the C/N ratio to less than 15/1. The CP product had higher pH, EC, and EUA values than both VC and SC. The VC product had the highest GI values. All the products obtained at 183 d were within the parameters to be considered as organic fertilizers, but the SC product transformed into an organic fertilizer fastest and had least water usage.
author	Sánchez-Rosales,Rocío Hernández-Rodríguez,Adriana Ojeda-Barrios,Dámaris Robles-Hernández,Loreto González-Franco,Ana Cecilia Parra-Quezada,Rafael
author_facet	Sánchez-Rosales,Rocío Hernández-Rodríguez,Adriana Ojeda-Barrios,Dámaris Robles-Hernández,Loreto González-Franco,Ana Cecilia Parra-Quezada,Rafael
author_sort	Sánchez-Rosales,Rocío
title	Comparison of three systems of decomposition of agricultural residues for the production of organic fertilizers
title_short	Comparison of three systems of decomposition of agricultural residues for the production of organic fertilizers
title_full	Comparison of three systems of decomposition of agricultural residues for the production of organic fertilizers
title_fullStr	Comparison of three systems of decomposition of agricultural residues for the production of organic fertilizers
title_full_unstemmed	Comparison of three systems of decomposition of agricultural residues for the production of organic fertilizers
title_sort	comparison of three systems of decomposition of agricultural residues for the production of organic fertilizers
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000300287
work_keys_str_mv	AT sanchezrosalesrocio comparisonofthreesystemsofdecompositionofagriculturalresiduesfortheproductionoforganicfertilizers AT hernandezrodriguezadriana comparisonofthreesystemsofdecompositionofagriculturalresiduesfortheproductionoforganicfertilizers AT ojedabarriosdamaris comparisonofthreesystemsofdecompositionofagriculturalresiduesfortheproductionoforganicfertilizers AT robleshernandezloreto comparisonofthreesystemsofdecompositionofagriculturalresiduesfortheproductionoforganicfertilizers AT gonzalezfrancoanacecilia comparisonofthreesystemsofdecompositionofagriculturalresiduesfortheproductionoforganicfertilizers AT parraquezadarafael comparisonofthreesystemsofdecompositionofagriculturalresiduesfortheproductionoforganicfertilizers
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Comparison of three systems of decomposition of agricultural residues for the production of organic fertilizers

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