2. Publicaciones Periódicas
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Examinando 2. Publicaciones Periódicas por Materia "absorcion de nutrientes"
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- Rendimiento de trigo, el monocultivo y sembrado después de centeno, triticale, cebada y lupino
Autor: Mellado A., Mario
Serie Documental: Tierra Adentro
N° Publicación: no. 52
Las rotación es importante para conseguir una producción de trigo estable, económica, y de buena calidad. Sin embargo por razones de mercado, los agricultores no realizan una rotación de largo plazo y, en general, se preocupan solo del cultivo anterior a dicho cereal. Incluso, en casos extremos se llega a practicar el monocultivo, a pesar de los efectos negativos de esta practica. Este articulo contiene: rendimiento de grano, efecto en la fertilidad del sueloEnlace permanente: https://hdl.handle.net/20.500.14001/6043
Mellado A., Mario , (Sep/Oct-2003) - [Tasas crecientes de nitrógeno en arroz y su efecto en composición de nutrientes y recuperación de nitrógeno aparente en la planta]
Serie Documental: Chilean Journal of Agricultural Research
N° Documento: v. 73(4) p. 385-390
Rice (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 DMEnlace permanente: https://hdl.handle.net/20.500.14001/33385
Hirzel C., Juan, Rodríguez, Francisco , (Oct-Dec 2013) - Utilización y perdidas de nitrógeno en aplicaciones de purines y estiércol de lechería
Autor: Salazar S., Francisco
Serie Documental: Tierra Adentro
N° Publicación: no. 60
El presente articulo analiza el manejo de purines y estiércoles de lecheria: Purin versus estiércol, contenido de nitrógeno, perdida de nitrógeno; características físicas y químicas de purines y estiércol de ganado vacunoEnlace permanente: https://hdl.handle.net/20.500.14001/6138
Salazar S., Francisco , (Ene/Feb-2005)