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Análisis multivariado del comportamiento espacial y temporal de la resistencia del suelo a la penetración Acta Agron. (Palmira)
Cortés,César A; Camacho-Tamayo,Jesús H; Leiva,Fabio R.
La resistencia a la penetración (RP) es una forma fácil y rápida de identificar la compactación del suelo. El objetivo del presente trabajo fue evaluar un procedimiento para caracterizar adecuadamente la variabilidad vertical y horizontal de la compactación de suelos agrícolas, usando técnicas de análisis multivariado. Las mediciones de RP se realizaron antes de la labranza y después de la cosecha en un lote sembrado con maíz (Zea mays) en la sabana de Bogotá (Colombia), en una cuadrícula regular de 32 puntos (25 m x 25 m), hasta una profundidad de 60 cm. Para identificar zonas y capas compactas del suelo se utilizaron técnicas de análisis multivariado. El análisis jerárquico, realizado a partir de las lecturas de RP por punto de muestreo, permitió...
Tipo: Journal article Palavras-chave: Análisis de componentes principales; Análisis jerárquico; Andisol; Compactación; Suelo.
Ano: 2013 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122013000300010
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ARBUSCULAR MYCORRHIZAE IN AGRICULTURAL AND FOREST ECOSYSTEMS IN CHILE J. Soil Sci. Plant Nutr.
Borie,Fernando; Rubio,Rosa; Morales,Alfredo; Curaqueo,Gustavo; Cornejo,Pablo.
Arbuscular mycorrhizal (AM) association plays a key role in the sustainability of terrestrial plant ecosystems, in particular those presenting limitations for the establishment and subsequent growth of plants. In Chile, more than 50% of arable soils are originated from volcanic ashes, showing in general several constraints to crop production, such as low pH, high exchangeable aluminum content and low levels of available P. Under these conditions, the management of AM fungal propagules using adequate cultural management practices emerges as a successful alternative in order to maximize the positive effects of AM symbiosis on plant growth in these types of soil. This review presents the results of several years of research about the effect of different...
Tipo: Journal article Palavras-chave: Andisol; Management practices; Mycorrhizal propagules; N sources; P fractions; Ultisol.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100001
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BIOSTIMULATION OF AGRICULTURAL BIOBEDS WITH NPK FERTILIZER ON CHLORPYRIFOS DEGRADATION TO AVOID SOIL AND WATER CONTAMINATION J. Soil Sci. Plant Nutr.
Tortella,G.R; Rubilar,O; Cea,M; Wulff,C; Martínez,O; Diez,M.C.
Degradation of the insecticide chlorpynfos (160 a.i mg kg-1) using a biomix of a biobed system biostimulated with inorganic fertilizer (NPK) was investigated. Three concentrations of the fertilizer (0.1%, 0.5% and 1.0% ww-1) were evaluated on chlorpynfos degradation, TCP (3, 5, 6-trichloro-2-pyrinidol) accumulation and biological activity of the biomix. The chlorpynfos was dissipated efficiently (>75%) after 40 days of incubation and no additional dissipation was obtained with increasing concentration of NPK after 20 days of incubation. TCP accumulation occuned in all evaluated NPK concentrations and its concentration increased with the increment of NPK addition raising the probability of leaching of this compound. Biological activity (FDA and...
Tipo: Journal article Palavras-chave: Chlorpyrifos; Bio stimulation; NPK fertilizer; Biobed; Andisol.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000200007
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Chemical properties of volcanic soil affected by seven-year rotations Chilean J. Agric. Res.
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
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EFECTO DE CULTIVOS HOSPEDEROS Y NO HOSPEDEROS SOBRE PROPÁGULOS MICORRÍCICOS ARBUSCULARES R.C. Suelo Nutr. Veg.
Castillo,Claudia; Astroza,Ivonne; Borie,Fernando; Rubio,Rosa.
Estudios recientes en campo han demostrado que las esporas fúngicas disminuyen cuando se utilizan como pre-cultivo no hospederos. El objetivo de este trabajo fue estudiar la influencia de un cultivo hospedero, avena (Avena sativa L.) y cultivos no hospederos, como lupino (Lupinus albus L.) y raps (Brassica napus L.) sobre los propágulos de hongos micorrícicos arbusculares (HMA) y diversidad fúngica junto con la actividad fosfatásica en un Andisol serie Temuco e Inceptisol serie Lumaco. El ensayo se realizó en condiciones de invernadero, desde septiembre de 2006 hasta marzo de 2007, utilizándose macetas de 5 kg con un diseño experimental completamente al azar con cuatro repeticiones. El número de esporas HMA fue mayor en el Andisol que en el Inceptisol y...
Tipo: Journal article Palavras-chave: Avena; Lupino; Raps; Andisol; Inceptiso.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912008000100004
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EFECTO DEL CAMBIO DE USO EN LA ESTABILIDAD DE LA ESTRUCTURA Y LA FUNCIÓN DE LOS POROS DE UN ANDISOL (TYPIC HAPLUDAND) DEL SUR DE CHILE R.C. Suelo Nutr. Veg.
Dörner,José; Dec,Dorota; Peng,Xinhua; Horn,Rainer.
Los suelos volcánicos del sur de Chile constituyen cerca del 60% del suelo arable del país. Estos suelos se encuentran bajo un amplio rango de usos desde sistemas prístinos hasta otros con un uso intensivo. El objetivo de este trabajo fue determinar el efecto del cambio de uso de suelo sobre: i) la estabilidad del suelo frente a presiones externas e internas; ii) la conductividad hidráulica y iii) su resiliencia funcional. Muestras disturbadas y no disturbadas de suelo fueron recolectadas a 5, 20, 40 cm de profundidad en un suelo Andisol (Typic Hapludand) bajo un renoval de bosque nativo (NF), una pradera de 50 años (P50) y otra de 1 año de uso (Pl). Se determinó la curva de retención de agua, contracción y consolidación, la conductividad hidráulica...
Tipo: Journal article Palavras-chave: Andisol; Propiedades estructurales; Función de los poros.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000300003
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Effect of Nitrogen Inhibitors on Nitrous Oxide Emissions and Pasture Growth After an Autumn Application in Volcanic Soil Chilean J. Agric. Res.
Vistoso,Erika; Alfaro,Marta; Saggar,Surinder; Salazar,Francisco.
A range of technologies is available to reduce greenhouse gas emissions from agricultural systems. Among these, applying N transformation inhibitors is promising in reducing nitrous oxide (N2O) emissions in both arable and pastoral soils. A randomized complete block design with six replicates was used to quantify the effect of urease (UI) and nitrification (NI) inhibitors on N2O emissions and pasture production from permanent pasture in an Andisol after autumn-applied urea. The N2O emissions were measured periodically for 8 wk with PVC stationary chambers. Mineral N, DM yield, N concentration, and N uptake were analyzed. Our results show that adding fertilizer (40 kg N ha-1) significantly increased N2O emissions by 281% over the control treatment (P <...
Tipo: Journal article Palavras-chave: Andisol; Emission factor; Urease inhibitor; Nitrification inhibitor; Urea.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100021
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EFFECT OF PENTACHLOROPHENOL ON SELECTED SOIL ENZYME ACTIVITIES IN A CHILEAN ANDISOL R.C. Suelo Nutr. Veg.
Diez J,M. Cristina; Gallardo A,Felipe; Saavedra,Gisselle; Cea L,Mara; Gianfreda,Liliana; Alvear Z,Marisol.
The activities of laccase, Mn-peroxidase, phosphatase and dehydrogenase were studied in a Chilean Andisol (Temuco Serie) contaminated with pentachlorophenol (PCP). Experiments were conducted on the top of 0-20 cm soil, adding different concentrations of PCP (0.41, 4.1 and 41 mg kg-1). Enzymatic activities and residual concentrations of PCP were evaluated in soil incubated at 25 ± 1 ºC for 112 days. Enzyme activities of PCP-treated soil varied according to the PCP concentration added. For instance, an inhibitory effect on Mn-peroxidase activity was not observed during incubation at the three levels of PCP, whereas acid phosphatase activity was only affected by the 0.41 mg kg-1 PCP treatment. By contrast, laccase and dehydrogenase activities were negatively...
Tipo: Journal article Palavras-chave: Pentachlorophenol; Andisol; Laccase; Mn-peroxidase; Phosphatase; Dehydrogenase.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912006000300004
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Effect Of pH, Phosphate and/or Malate on Sulfate Sorption on Andisols R.C. Suelo Nutr. Veg.
Pigna,Massimo; Jara,Alejandra A; Mora,María de la Luz; Violante,Antonio.
The sulfate sorption was studied on Andisols with variable mineralogical composition and low organic matter content in presence and absence of phosphate or malate ligands at different pH. Crystalline clay mineralogy was similar for all the studied samples, except for the 2C horizon of the pedon 2, which did not show crystalline minerals. The soil samples showed content of allophane ranging from 16% to 42%. The sulfate adsorption decreased when descending the first 3 horizons (A1, 2A2 and 3Bw1) of the pedon 1. This behavior was attributed to the decreasing organic carbon content. At different pH sulfate sorption was drastically decreased by increasing the pH from 4.0 to 7.0, precisely by 80% for sample 5 to 100% for sample 1. Experiments on the competitive...
Tipo: Journal article Palavras-chave: Sulfate; Adsorption; Andisol; Mineralogical composition; Phosphate; Malate.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912007000100005
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Flujo Hídrico no Saturado en Andisoles R.C. Suelo Nutr. Veg.
Nissen M,Juan; Quiroz S,Cristian; Seguel S,Oscar; Mac Donald H,Roberto; Ellies Sch,Achim.
El objetivo principal de esta investigación fue determinar la conductividad hidráulica en fase no saturada en tres Andisoles bajo dos manejos bosque y praderas en s series Bramadero, Pemehue y Osorno, localizados en la VIIª, IXª y Xª Regiones de Chile, respectivamente. En muestras de suelo no alteradas se determinó la conductividad hidráulica en fase no saturada a distintas profundidades, mediante la metodología propuesta por Becher (1970), que combina la medición del potencial mátrico en el suelo y la aplicación de las ecuaciones de continuidad y de Darcy. Mediante mediciones de potencial mátrico, se monitoreó durante 95 días en laboratorio el proceso de secado en perfiles de suelo no alterados y en ausencia de un nivel freático artificial. Paralelamente,...
Tipo: Journal article Palavras-chave: Conductividad hidráulica no saturada; Movimiento de agua; Andisol.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912006000100003
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Litterfall, litter decomposition and nitrogen mineralization in old-growth evergreen and secondary deciduous Nothofagus forests in south-central Chile RChHN
STAELENS,JEROEN; AMELOOT,NELE; ALMONACID,LEONARDO; PADILLA,EVELYN; BOECKX,PASCAL; HUYGENS,DRIES; VERHEYEN,KRIS; OYARZÚN,CARLOS; GODOY,ROBERTO.
South Chilean forest ecosystems represent one of the largest areas of old-growth temperate rainforests remaining in the Southern hemisphere and have a high ecological value, but suffer from deforestation, invasion by exotic species, fragmentation, and increasing atmospheric nitrogen (N) deposition. To support sustainable forest management, more knowledge is required on nutrient cycling of these ecosystems. Therefore, a descriptive study of nutrient dynamics was done in four Valdivian rainforests in the lower Andes range of south Chile: old-growth and altered evergreen stands and unmanaged and managed secondary deciduous stands. Time series were measured for (i) mass (four year) and nutrient content (N, K, Ca, and Mg; one year) of litterfall, (ii)...
Tipo: Journal article Palavras-chave: Andisol; Chile; Nitrogen cycling; Nutrient dynamics; Temperate rainforest.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000100010
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Nitrogen, Phosphorus and Potassium Losses in a Grazing System with Different Stocking Rates in a Volcanic Soil Chilean J. Agric. Res.
Alfaro,Marta; Salazar,Francisco; Iraira,Sergio; Teuber,Nolberto; Villarroel,Dagoberto; Ramírez,Luis.
In Chile there is little information on nutrient losses in livestock systems. The experiment was carried out between 2004 and 2006. Two stocking rates (3.5 and 5.0 steers ha-1) were tested under rotational grazing with Black and White Friesian steers on a permanent pasture (67.5 kg N and 40 kg P ha-1 yr-1). To quantify surface runoff losses (N, P, K), three surface lysimeters (5 x 5 m) per treatment were established. N and K leaching losses were estimated with ceramic cups. Runoff and leachate samples were individually analyzed for available and total N, reactive (RP) and total P, and K. Dissolved organic N (DON) and organic P (OP) were estimated as the difference between total and available forms. The stocking rate did not increase total N, P and K losses...
Tipo: Journal article Palavras-chave: Eutrofication; Water quality; Grazing; Andisol; Beef production.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000200004
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NITROGEN RUNOFF AND LEACHING LOSSES IN BEEF PRODUCTION SYSTEMS UNDER TWO DIFFERENT STOCKING RATES IN SOUTHERN CHILE Gayana Botánica
Alfaro,Marta; Salaza,Francisco; Iraira,Sergio; Teuber,Nolberto; Ramírez,Luis.
The Lakes Region of Chile produces 60% of the country's milk and 45% of its meat. Production is expected to increase in the near future, yet there are few data on the environmental impact of local livestock systems. A field experiment was carried out during 2004 to measure nitrogen (N) runoff and leaching losses in beef cattle-grazing production systems near Osorno. Grazing was carried out with Holstein-Friesian steers of 220 kg of initial live weight, with stocking rates of 3.5 and 5 steers ha-1. Water samples were collected during 6.5 months with surface lysimeters and ceramic cups, and were analyzed for nitrate and ammonium. Total losses were calculated as the product of N concentration and accumulated drainage at each sampling date. A significant...
Tipo: Journal article Palavras-chave: Andisol; Ammonium; Nitrate; Livestock production.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432005000200008
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PHOSPHORUS-MOLYBDENUM RELATIONSHIP IN SOIL AND RED CLOVER (Trifolium pratense L.) ON AN ACID ANDISOL R.C. Suelo Nutr. Veg.
Ribera,Alejandra E; Mora,Maria de la Luz; Ghiselini,Vanessa; Demanet,Rolando; Gallardo,Felipe.
We studied the phosphorous (P) and molybdenum (Mo) relationship in soil and red clover (Trifoliumpratense L.) in a non limed and limed acid Andisol of Southern Chile. In soil, we evaluated the effect of different liming (0 and 2000 mg kg-1), P (0, 200 and 400 mg kg-1), and Mo (0, 0.58 and 0.96 mg kg-1) doses supply on soil available Mo. In addition, the availability of P and Calcium (Ca) in treated soils was determinated. In red clover, we studied the Mo and P shoot concentrations and dry matter yield in response to the different treatments applied to the soil. Also, we measured the changes produced by Mo uptake in shoot Cu concentrations. The results showed that both, lime and more strongly P and Mo additions significantly (P &#8805; 0.05) increased...
Tipo: Journal article Palavras-chave: Phosphorous; Molybdenum; Andisol; Red clover.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912010000100008
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Promoción de crecimiento de plántulas forestales por doble inoculación con los hongos rizosféricos Rhizoglomus fasciculatum (Thaxt.) Sieverding, Silva &amp; Oehl y Mortierella sp., para propósitos de reforestación, promoción de crecimiento y asimilación de fósforo en etapa de vivero Acta Agron. (Palmira)
Moreno,Josaly; León,Juan Diego; Osorio,Nelson Walter.
Una de las técnicas más importantes para promover el crecimiento vegetal en el invernadero de especies forestales es el uso de microorganismos rizosféricos. Esto es particularmente relevante para mejorar el desarrollo vegetal en programas de reforestación de tierras degradadas. Una serie de experimentos se realizaron para evaluar la efectividad de inoculaciones individuales y combinadas con el hongo micorrícico arbuscular Rhizoglomus fasciculatum (Thaxt.) Sieverding, G.A. Silva &amp; Oehl y el hongo solubilizador de fosforo (P) Mortierella sp., a dos dosis (50 y 100 kg de inóculo por m³ de sustrato) sobre el crecimiento y absorción de P de Tecoma stans, Dodonaea viscosa, Fraxinus chinensis y Lafoensia speciosa. Estas especies vegetales son comúnmente...
Tipo: Journal article Palavras-chave: Andisol; Fósforo; Mortierella; Rhizoglomus fasciculatum; Vivero forestal.
Ano: 2016 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122016000300005
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Retención y disponibilidad de fósforo asociado a la materia orgánica en un Typic Melanudands del departamento del Cauca, Colombia Acta Agron. (Palmira)
Bravo,Isabel; Montoya,Juan Carlos; Menjivar,Juan Carlos.
En el departamento del Cauca, Colombia, en un Typic Melanudands cultivado con café (Coffea arabica) y guamo (Inga spuria) como sombrío, se evaluó el efecto de la materia orgánica (M.O.) sobre la retención y disponibilidad de fósforo (P), mediante isotermas elaboradas a partir de la ecuación de Langmuir linealizada por Scatchard y empleando el método propuesto por Fox y Kamprath (1970). Se utilizó un diseño completamente al azar con 60 tratamientos, generados a partir de cinco dosis de P por seis tiempos de incubación en muestras de suelo con y sin M.O. El análisis de varianza no mostró diferencias significativas en adsorción de P en función del tiempo de incubación (P > 0.05), indicando que la adsorción ocurre desde el tiempo cero. La retención de P se...
Tipo: Journal article Palavras-chave: Adsorción; Andisol; Fósforo; Inmovilización; Materia orgánica.
Ano: 2013 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122013000300009
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Soil humidity and evapotranspiration under three coffee (Coffea arabica L.) planting densities at Naranjal experimental station (Chinchiná, Caldas, Colombia) Acta Agron. (Palmira)
Bermúdez-Florez,Leidy Natalia; Cartagena-Valenzuela,José Régulo; Ramírez-Builes,Víctor Hugo.
Abstract Coffee cultivation depends on water supplied by rain or irrigation, which, in turn, affect productivity and harvest distribution. Knowing the influence of plant spacing on the behavior of soil moisture and water consumption, is likely to determine a crop&#8217;s planting density, fertilization and planting times, all based on regional water availability. In this context, the study was conducted at Naranjal Experimental Station, municipality of Chinchiná (Caldas, Colombia) at 04° 58&#8217; N, 75° 39&#8217; W; 1,381 m a.s.l., aimed to describe moisture performance in a coffee plantation established on an Andisol, under three planting densities. This was done by estimating the evapotranspiration (ETo) and assessing crop evapotranspiration...
Tipo: Journal article Palavras-chave: Plant spacing; Andisol; Soil moisture; Hydraulic conductivity.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000300402
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Temporal and spatial variability of structure dependent properties of a volcanic ash soil under pasture in southern Chile Chilean J. Agric. Res.
Dec,Dorota; Dörner,José; Balocchi,Oscar.
Prairies are a main source for livestock feeding in southern Chile. The aim of this research was to define how grazing events and natural wetting and drying cycles (WD) affect the spatial and temporal variability of the soil’s structural properties. The investigation was conducted in a Duric Hapludand, Valdivia Series. Penetration resistance (PR) and volumetric water content (WC), measured in situ, were used to prepare maps which show i) temporal (1383 to 3047 kPa for 46 to 16% WC) and spatial changes, and ii) grazing events as an important factor influencing spatial changes in PR (differences of 3421 kPa between max and min values). Grazing and WD cycles induced changes in the soil’s mechanical stability and pore functions, which indicate that...
Tipo: Journal article Palavras-chave: Penetration resistance; Water content; Mechanical strength; Porous system; Andisol.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000200015
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長期有機物連用圃場における黒ボク土の荷電特性 OAK
八木, 哲生; 谷, 昌幸; Yagi, Tetsuo; Tani, Masayuki.
農耕地土壌への有機物施用は,化学的効果として陽イオン交換容量(CEC)の増加などが考えられているが,詳細な荷電特性に関するデータは見られない.また,慣行法であるショーレンベルが一法によるCEC測定は,変異荷電成分を多量に含む土壌においては適切でないと考えられる.本研究では,25年間にわたって堆肥や作物残渣などの有機物を連用した黒ボク土のCECおよび陰イオン交換容量(AEC)を繰り返し平衡法により測定し,荷電特性に対する有機物の連用効果について明らかにすることを目的とした.CECは,有機物施用区が化学肥料区よりも若干高かった.その差はきわめて多量の堆肥(30 Mg ha^<-1>)を毎年連用した区において,pH5.5前後で約20%,pH6.5前後で約10%であった.現実的な堆肥の施用量(15Mg ha^<-1>...
Palavras-chave: 活性アルミニウム・鉄; 荷電特性; 黒ボク土; 長期有機物運用; 陽イオン交換容量(CEC); Active aluminum and iron; Andisol; Cation-exchange capacity (CEC); Charge characteristic; Long-term organic matter application.
Ano: 2003 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2966
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