[Tasas crecientes de nitrógeno en arroz y su efecto en composición de nutrientes y recuperación de nitrógeno aparente en la planta]

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dc.codigo.principalF04 F60 0100
dc.contributor.authorHirzel C., Juan
dc.contributor.authorRodríguez, Francisco
dc.date.accessioned2020-12-29T02:10:51Z
dc.date.available2020-12-29T02:10:51Z
dc.date.issuedOct-Dec 2013
dc.descriptionTexto en inglés
dc.description.abstractRice (Oryza sativa L.) is one of the essential foods of the human diet; advances in agronomic crop management can improve productivity and profitability as well as reduce adverse environmental impacts. Nitrogen rates in Chile are generally based on crop yield without considering other agronomic factors. The objective of this experiment was to determine the effect of increasing N rates on plant nutrient composition and N apparent recovery in rice cultivated in five different locations in Chile. The five sites located in central Chile belong to one of the following soil orders: Inceptisol, Alfisol, and Vertisol; they were cropped in field conditions with 'Zafiro-INIA' rice fertilized with 0, 80, and 160 kg N ha-1. Whole-plant total DM, macronutrient composition, and N apparent recovery efficiency (NARE) were determined at grain harvest. Results indicate that all evaluated parameters, with the exception of K concentration, were affected by the soil used. Nitrogen rates only affected total DM production and P, K, and Mg concentrations in plants. Phosphorus and K response decreased when N was added to some soils, which is associated with its chemical properties. Magnesium concentration exhibited an erratic effect, but it was not affected by the N rate in most soils. Nitrogen apparent recovery efficiency was not affected by the N rate and accounted for approximately 49% and 41% for 80 and 160 kg N ha-1, respectively. Macronutrient composition was 5.1-7.7 g N, 1.3-1.8 g P, 5.4-10.8 g K, 1.68-2.57 g Ca, and 0.81-1.45 g Mg kg-1 of total DM
dc.formatEL-31
dc.identifier.urihttps://hdl.handle.net/20.500.14001/33385
dc.indicador.literaturaResumen
dc.nombre.pdfEL-31/NR39165.pdf
dc.numero.correlativo39165
dc.paginas.temporal6 p.
dc.relation.ispartofChilean Journal of Agricultural Research
dc.relation.ispartofnov. 73(4) p. 385-390
dc.subject.spanisharroz
dc.subject.spanishfertilizantes nitrogenados
dc.subject.spanishabsorcion de nutrientes
dc.title[Tasas crecientes de nitrógeno en arroz y su efecto en composición de nutrientes y recuperación de nitrógeno aparente en la planta]
dc.title.alternativeIncreasing nitrogen rates in rice and its effect on plant nutrient composition and nitrogen apparent recovery
dc.typeArtículo
dc.ubicacion.iniaEn las Bibliotecas del INIA

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2.2.2. Chilean Journal (Ex- Agricultura Técnica)