Browsing by Author "Zunino Venegas, Hugo"
Now showing items 1-16 of 16
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Zunino Venegas, Hugo; Aguilera S., S. María; Peirano V., Pedro (The Williams & Wilkins Co., 1975)An experimental method to determine available phosphate in soils using anion exchange resin as an extractant has been described (3, 5). However, when this method is applied to volcanic ash-derived soils, some problems ...
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Aguilera S., S. María; Mora, M. D.; Borie B., Gilda; Peirano V., Pedro; Zunino Venegas, Hugo (PERGAMON-ELSEVIER SCIENCE LTD, 2002-09)Sulphur distribution with an insight in S-organic fractions was studied in volcanic-ash derived soils of Chile (Typic Dystrandepts, Palehumult) by isolating each fraction and measuring S directly by instrumental elemental ...
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Aguilera S., S. María; Borie B., Gilda; Peirano V., Pedro; Rodríguez Rojas, Manuel; Grez M., Iván; Zunino Venegas, Hugo (TAYLOR & FRANCIS INC, 2007)Soils open for forestation in Chile are characterized by their very low organic carbon content; therefore, new forest plantations, needed to restore soil ecological equilibria, are scarcely developed. Stabilized sewage ...
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Martin, J. P.; Zunino Venegas, Hugo; Peirano J., Pedro; Caiozzi, Mario; Haider, K. (Pergamon Press Ltd, 1982)During 1 yr, CO2-C losses from 7 agricultural soils containing 0,5-1,5% organic C ranged from 70 to 243 mg 100g-1 while losses from three allophanic soils containing 4,9-8,9% organic C varied from 92 to 191 mg. Losses as ...
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Zunino Venegas, Hugo; Peirano V., Pedro; Aguilera S., S. María; Escobar, I. (The Williams & Wilkins Co., 1972)When the maximum complexing ability (MCA) of water-soluble complexants of unknown molecular weight is known, it is possible to calculate the stability constants of metal complexes where these complexants participate (2,4,5). ...
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Borie B., Gilda; Peirano V., Pedro; Espinoza González, Jeannette; Zunino Venegas, Hugo; Aguilera S., S. María (Sociedad Chilena de la Ciencia del Suelo, 2000)Universalmente se hace necesario y urgente implementar políticas de uso de residuos orgánicos en los suelos, tanto por la necesidad de disponer de estos residuos, como también por la necesidad apremiante de recuperar el ...
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Zunino Venegas, Hugo; Peirano V., Pedro; Aguilera S., S. María; Caiozzi, Mario (Chile, Instituto de Investigaciones Agropecuarias, 1976)Una de las propiedades fisico-químicas más notables de los suelos chilenos derivados de cenizas volcánicas, es su extraordinaria habilidad para adsorver aniones, especialmente fosfato (Alamos, et al., 1967; Appelt, 1974; ...
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Zunino Venegas, Hugo; Peirano V., Pedro; Aguilera S., S. María; González, R.; Caiozzi, Mario (American Society of Agronomy, 1971)A volcanic ash-derived soil was incubated uo to 93 days with different amounts of seaweed. P was then extracted using an anion exchange resin method, and it was found that extractable P increased with increasing amounts ...
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Caiozzi, Mario; Peirano V., Pedro; Rauch, Eduardo; Zunino Venegas, Hugo (American Society of Agronomy, 1968)The objective of the present investigation was to study changes in levels of phosphorus and nitrogen in soils supplemented with dry, ground seaweeed, KNO3, and KH2PO4. After intervals of 21, 42, 76 and 105 days, phosphorus, ...
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Borie B., Gilda; Peirano V., Pedro; Espinoza González, Jeannette; Zunino Venegas, Hugo; Aguilera S., S. María (Sociedad Chilena de la Ciencia del Suelo, 2004)Se propone una nueva metodología para hacer el seguimiento de los metales pesados y nutrientes en suelos tratados con residuos orgánicos eventualmente peligrosos y que reemplaza el uso de lisímetros. El método consiste ...
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Zunino Venegas, Hugo; Peirano V., Pedro; Aguilera S., S. María; Schalscha B., Eduardo (The Williams & Wilkins Co., 1975)Characterization of the metal-complexing ability of polyfunctional macromolecules through the determination of stability constants of their metalic complexes is discussed along with the validity of ascribing a relationship ...
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Borie B., Gilda; Peirano V., Pedro; Zunino Venegas, Hugo; Aguilera S., S. María (PERGAMON-ELSEVIER SCIENCE LTD, 2002-08)Changes in N-distribution patterns in volcanic-ash of Chile after deforestation of a primary forest were measured. There is a clear tendency towards the depletion of N linked to high molecular weight fractions (humin, humic ...
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Borie B., Gilda; Peirano V., Pedro; Zunino Venegas, Hugo; Aguilera S., S. María (PERGAMON-ELSEVIER SCIENCE LTD, 2003-01)Correction.
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Heredia, Wendy; Peirano V., Pedro; Borie B., Gilda; Zunino Venegas, Hugo; Aguilera S., S. María (TAYLOR & FRANCIS AS, 2007)It is well known that humified soil organic matter ( SOM) plays a central role in soil fertility due to its chemical and physical properties, especially by sustaining soil biological and related ecological equilibrium. ...
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Borie, Fernando; Zunino Venegas, Hugo (Pergamon Press Ltd, 1983)In fertilized and unfertilized plots of ten Chilean allophanic soils the fraction of total-P associated with organic matter and the organic carbon content were determined. Cultivation with P fertilization for 40 yr or ...
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Zunino Venegas, Hugo; Galindo, Gerardo (The Williams & Wilkins Co., 1978)