Consulta: creatorFacets:"Hirzel,Juan"
Registros recuperados: 10
Data/hora: 09/06/2024 03:53:17

Efecto de diferentes dosis de fertilización inorgánica con N, P, K y fuente orgánica (estiércol de broiler) sobre la producción de maíz y la fertilidad del suelo
Provedor de dados: 113
Autores: Hirzel,Juan; Rodríguez,Nicasio; Zagal,Erick.
La disponibilidad de cama de broiler (CB), mezcla de estiércol de broiler sobre viruta, ha aumentado sostenidamente debido a la mayor producción de carne de ave. El uso de este producto como fertilizante disminuye la contaminación desde zonas de acumulación y a la vez mejora la fertilidad de los suelos. En este estudio se comparó el nivel de macronutrientes, pH, materia orgánica (MO) y conductividad eléctrica (CE) del suelo y la producción de MS de maíz (Zea mayz L.), para ensilaje obtenidos con la aplicación de dos fuentes de N:P2O5:K2O: CB y fertilizantes inorgánicos, (urea, superfosfato triple (SFT) y muriato de potasio (KCl)), en suelos de origen volcánico de la VII y VIII Región de Chile, correspondientes a un Vitrandepts y Typic Melanoxerands,...
Tipo: Journal article
Palavras-chave: Maíz; Fertilización; Cama de broiler; Zea mays L.
Ano: 2004
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072004000400005

Cubiertas Vegetales en Viñedos: Comportamiento de mezclas de Leguminosas Forrajeras Anuales y Efectos sobre la Fertilidad del Suelo
Provedor de dados: 113
Autores: Ovalle,Carlos; del Pozo,Alejandro; Lavín,Arturo; Hirzel,Juan.
Con el objetivo de evaluar y seleccionar cubiertas vegetales como cultivos entre hileras, para mejorar el manejo del suelo en un viñedo (Vitis vinifera L.) cv. Cabernet Sauvignon, se evaluaron cinco cubiertas: a) testigo sin vegetación; b) testigo con vegetación espontánea; c) mezcla de leguminosas de cultivares precoces de trébol subterráneo (Trifolium subterraneum L.) con hualputra (Medicago polymorpha L.); d) mezcla de cultivares tardíos de trébol subterráneo con trébol balansa (T. michelianum Savi); e) mezcla de leguminosas tardías con ballica anual (Lolium rigidum Gaud .) El ensayo se realizó en el Centro Experimental Cauquenes del Instituto de Investigaciones Agropecuarias (INIA), durante dos temporadas, 2005-2006 y 2006-2007. El diseño experimental...
Tipo: Journal article
Palavras-chave: Cubiertas vegetales.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072007000400006

EFECTO DE LA NUTRICIÓN MINERAL SOBRE LA PRODUCCIÓN DE CULÉN (Otholobium glandulosum (L.) Grimes)
Provedor de dados: 113
Autores: Hirzel,Juan; Rodríguez,Nicasio; del Valle,Pedro.
El culén (Otholobium glandulosum (L.) Grimes) es una planta medicinal que ha adquirido gran importancia en los últimos años por su contenido de psolareno. Este estudio tuvo como objetivo generar antecedentes sobre la fertilización de este cultivo. Para tal efecto, se realizó un experimento en macetas con plantas de 2 años, sobre dos substratos de crecimiento, arena de río y suelo trumao (Serie Santa Bárbara, Hashy, mesic typic haploxerands). El ensayo contó con nueve tratamientos de fertilización y cuatro repeticiones en cada substrato. Los tratamientos fueron: fertilización completa (N, P, K, Ca, Mg, S y microelementos), siete tratamientos con fertilización completa excluyendo sólo un nutriente de los señalados, y un tratamiento testigo sin fertilización....
Tipo: Journal article
Palavras-chave: Otholobium glandulosum; Culén; Nutrición minera; Planta medicinal.
Ano: 2004
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072004000300008

Evaluación de riego deficitario controlado sobre la producción de kiwi (Actinidia deliciosa)
Provedor de dados: 115
Autores: Lagos,Luis O.; Lama,Waldo; Hirzel,Juan; Souto,Camilo; Lillo,Mario.
Resumen El riego deficitario controlado (RDC) es una estrategia de manejo donde se aplica agua según las etapas fenológicas del cultivo. Como consecuencia, condiciones diferentes del manejo del riego pueden producir cambios importantes en la producción, calidad de la fruta y una disminución del volumen de agua utilizado. El objetivo de esta investigación fue evaluar el efecto de RDC en la producción y calidad del kiwi (Actinidia deliciosa) Hayward, en Chile. Durante los ciclos de producción de 2009 al 2012 se aplicaron cuatro periodos de restricción hídrica: 1) desde 30 d y hasta 10 d antes de la floración, 2) cuando el fruto alcanzó más de 60 % del peso final, 3) cuando el fruto alcanzó más de 70 % del peso final y 4) cuando el fruto alcanzó más de 80 %...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estrés hídrico; Calidad; Agua-producción; Ahorro agua y energía.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000400359

Effect of Split Nitrogen Applications on Durum Wheat Cultivars in Volcanic Soil
Provedor de dados: 117
Autores: Hirzel,Juan; Matus,Iván; Madariaga,Ricardo.
Durum wheat (Triticum turgidum L. var. durum) is an important crop for the world population and occupies a large cultivated area worldwide. New cultivars need constant improvement of their agronomic management, within which N fertilization is highlighted. Durum wheat is also important in Chile where genetic breeding and agronomic management have been developed to increase yield, industrial, and nutritional grain quality. The objective of this experiment was to determine the appropriate number of N applications during a crop cycle in a volcanic ash soil in South Central Chile. Nitrogen split applications were carried out on three durum wheat cultivars in a Melanoxerands soil during the 2003-2004 and 2004-2005 seasons. A rate of 200 kg ha-1 N was applied at...
Tipo: Journal article
Palavras-chave: Durum wheat; Cultivars; Nitrogen; Split applications; Volcanic soil.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000400009

Effect of Nitrogen Rates and Split Nitrogen Fertilization on Grain Yield and its Components in Flooded Rice
Provedor de dados: 117
Autores: Hirzel,Juan; Pedreros,Alberto; Cordero,Karla.
Nutritional management in rice (Oryza sativa L.) crops is mainly associated with N fertilization, which is difficult to adjust in field conditions due to variations in soil type and climatic conditions. Between 28 000 and 46 000 ha per year is dedicated to rice production in Chile and profits depend on fertilization. A field experiment determine the effect of N rates and split N fertilization on grain yield and its components was carried out in two locations during two consecutive seasons (2007 to 2009), where five N rates and five split N fertilizations were evaluated. The locations were in Parral (36º2’ S; 72º08’ W, Vertisol) and San Carlos (36º19’ S; 71º59’ W, Inceptisol), with N rates of 80, 100, 120, 140, and 160 kg ha-1 applied in different...
Tipo: Journal article
Palavras-chave: Irrigated rice; Nitrogen management; Rice productivity.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300015

Availability of Nitrogen, Phosphorus and Potassium from Poultry Litter and Conventional Fertilizers in a Volcanic Soil Cultivated with Silage Corn
Provedor de dados: 117
Autores: Hirzel,Juan; Walter,Ingrid.
Poultry litter (PL) is an organic matter source used as soil amendment. Besides its important nutrient content, it is a cheap alternative to conventional fertilizers in crop production. The efficient use of PL also helps reduce the environmental problems normally associated with its disposal near poultry production farms. This article reports the relative effects of PL and conventional fertilizers on the availability of soil N, P and K, dry matter (DM) production and total nutrient content in silage corn (Zea mays L.). The field experiment was carried out in a soil derived from volcanic ash (Tipic Melanoxerands) of Central South Chile. Corn was grown for three seasons (2002-2005) and PL and conventional fertilizers were applied in the first two years. The...
Tipo: Journal article
Palavras-chave: Poultry litter; Soil fertility; Corn; Nitrogen; Phosphorus; Potassium.
Ano: 2008
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300006

Nitrogen Mineralization and Released Nutrients in a Volcanic Soil Amended with Poultry Litter
Provedor de dados: 117
Autores: Hirzel,Juan; Undurraga,Pablo; Walter,Ingrid.
Optimum application rates of poultry litter (PL) spread out on the farmer´s field is a valuable source of available plant nutrients. The aim of this study was to compare the effect of two rates of PL and conventional fertilization (CF) on N mineralization and P, K, Zn, and Cu availability in an Andisol from Southern Chile under controlled conditions. Aerobic incubation was carried out for a 16-wk period. N mineralization rates were higher (61.5%) with the two PL treatments than with conventional fertilizer (23%). CF was associated with high N availability prior to the start of incubation and slight immobilization during the first week, perhaps due to a more rapid conversion of urea into NH4 which was then temporarily immobilized by the microbial biomass....
Tipo: Journal article
Palavras-chave: Aerobic incubation; Poultry litter; Nitrogen mineralization; Nutrient availability; Volcanic soil.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100012

Effect of soil depth and increasing fertilization rate on yield and its components of two durum wheat varieties
Provedor de dados: 117
Autores: Hirzel,Juan; Matus,Iván.
Agronomic practices, climatic variables, and soil conditions are key factors in crop productivity. Although the effects of soil chemical properties and water and agronomic crop management are known, there is little information about effective soil depth and its influence on crop productivity. Since most crop fertilization systems are based on the productive potential associated with climatic conditions and chemical properties of the first 20 cm of soil depth, the objective of this study was to determine the importance of effective depth in terms of increasing fertilization rates on durum wheat (Triticum turgidum L. var. durum) productivity. Two experiments were conducted in the 2006-2007 season in the Santa Rosa Experimental Station (71°54' S, 36°31' W,...
Tipo: Journal article
Palavras-chave: Durum wheat; Soil depth; Fertilization; Triticum turgidum.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000100008

Chemical properties of volcanic soil affected by seven-year rotations
Provedor de dados: 117
Autores: Hirzel,Juan; Undurraga,Pablo; González,Jorge.
Long-term crop rotation systems can benefit soil chemical-physical properties and crop productivity. The lack of information on the effect of long-term crop rotations on soil chemical-physical properties for volcanic soils in Chile could restrict reaping real benefits, and make it difficult to take agricultural management decisions, which could lead to possible negative consequences on some soil chemical-physical properties and the environment. The development of information associated with the effect on soil chemical-physical properties with respect to long-term rotation systems and their fertilization management contribute to improving agronomic management decisions for these soils. A study was carried out to assess the effect of six rotation systems...
Tipo: Journal article
Palavras-chave: Crop rotation; Andisol; Nutrient management; Soil fertility.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000200016