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Evaluación de cinco residuos avícolas como fuentes de nitrógeno mineral disponible

Authors: Palomino, Luz; Vega, Ruby; Lara, Coralí; Gomero, Luis; García, Sady;

Evaluación de cinco residuos avícolas como fuentes de nitrógeno mineral disponible

Abstract

espanolRESUMEN La produccion organica en el Peru se ha incrementado significativamente en la ultima decada, aumentando con ello la demanda de fuentes nitrogenadas de alta disponibilidad, que satisfagan los requerimientos de los cultivos. La mineralizacion del nitrogeno en cinco residuos avicolas: estiercol de gallina ponedora (EP), estiercol de gallina reproductora (ER), estiercol con restos de pollo (ERP), harina de pluma (HP) y lodo de flotacion (LF), fue estudiada con la finalidad de evaluar su potencial como fertilizantes organicos de rapida liberacion. Los residuos fueron aplicados a dosis de 0.33% (p/p) en tubos que contenian arena lavada, e incubados aerobicamente a 25 °C durante 120 dias. Las fracciones nitrica (N-NO3-) y amoniacal (N-NEL^) fueron extraidas de los tubos y determinadas por colorimetria despues de 0, 30, 60, 90 y 120 dias de incubacion. El potencial de mineralizacion fue calculado como la maxima cantidad de N mineral (N-NlrL/ + N-NO3-) liberado durante la incubacion. La tasa de mineralizacion fue maxima en los 30 primeros dias y continuo hasta los 120 dias para la harina de pluma y hasta 90 dias en las demas fuentes. Los residuos mostraron un potencial de mineralizacion de entre 12 y 70%. La harina de plumas y los estiercoles de gallina pone dora y reproductora presentaron los mayores potenciales de mineralizacion de N y son fuentes promisorias para su empleo en la fertilizacion de cultivos organicos. EnglishABSTRACT The production of organic crops in Peru has significantly increased during the last decade, thus increasing the demand of organic sources with high availability of nitrogen, suitable to satisfy crop requirements. The mineralization of nitrogen in five residues of poultry production: layer manure (EP), reproducer manure (ER), broiler manure with chicken corpses (ERP), feather meal (HP) and floatation sludge (LF), was studied with the aim of evaluating theirpotential as rapid-release organic fertilizers. The residues were applied at a rate of 0.33% (p/p) in centrifuge tubes containing washed sand, and aerobically incubated at 25 °C during 120 days. Mineral N fractions: nitrate (N-NO3-) and ammonium (N-NH4 +) were extracted from tubes and determined by colorimetric procedures at 0, 30, 60, 90 and 120 days of incubation. Nitrogen mineralization potential was calculated as the maximum amount of mineral N (N-NH4 + + N-NO3-) released during the incubation. Nitrogen mineralization rate was the highest at 30 days and continued until 120 days in feather meal, and until 90 days in the other sources. The organic residues showed N mineralization potential of 12 y 70%. Feather meal, layer manure and reproducer manure showed the highest N mineralization potential, and are promissory sources to be used as fertilizers in organic crops.

Keywords

feather meal, available nitrogen, Potencial de mineralización, organic agriculture, nitrógeno disponible, agricultura orgánica, Mineralization potential, harina de pluma

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
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