GÓMEZ PARRALES , Isidoro Ángel

Los estudios de suelos realizados en el Parque Natural los Alcornocales son, en general, escasos y muy dispersos, destacando entre ellos los realizados a escala: 1:200.000 por CEBAC (1963), Catálogo de Suelos de Andalucía (1984) y Mapa de Suelos de Andalucía a escala 1:400.000 (De la Rosa y Moreira, 1987; Mudarra et al., 1989). Por tanto, sería...

Bacillus licheniformis is a Gram-positive, soil bacterium used in the biotechnology industry to manufacture industrial enzymes including several proteases, amylase, lipases, chitinases, etc. These enzymes have a wide range of application in food and detergent industry. However, this organism may have other applications in the environmental...

The use of pesticides in agriculture is essential because it reduces the economic losses caused by pests, improving crop yields. In spite of the growing number of studies concerning the development and application of controlled release formulations (CRFs) of pesticides in agricultural soils, there are no studies about the effects of such...

In this work okara (OK), a by-product of soy milk manufacturing, is submitted to an enzymatic hydrolysis and a fermentative process to produce different soil biostimulants (BS): EH, hydrolysate obtained by the enzymatic process; FHEB, fermentation broth with Bacillus licheniformis and the enzymes secreted during the fermentation;...

Se estudian suelos del Parque Natural Alcornocales sobre areniscas silíceas. Se mues­tran las propiedades más importantes, resaltando aquellas que más influyen en la evolución de los suelos. La serie evolutiva de suelos desarrollados sobre estas rocas en este ambiente natural se esta­blece como Leptosoles, Regosoles, Cambisoles y Luvisoles.

In this manuscript we studied in the laboratory the bioremediation effects of a biostimulant obtained from okara by enzymatic hydrolysis processes in a soil polluted with used motor-car oil at a rate of 1 % (w/w) over an 89-day period. The biostimulant was added to the soil 6 times during the incubation period at a rate of 2 %. Dehydrogenase...

We report a study of the bioremediation of two biostimulants obtained from sewage sludge by fermentation processes in a oxyfluorfen-polluted soil over a 72-day period under laboratory conditions. The effects thereof on enzymatic activities, bacterial community and the evolution of oxyfluorfen in soil are determined. At the end of...

El objetivo principal de este trabajo de investigación es la realización de un análisis detallado del medio físico de la cuenca del Río Tepalcatepec (estados de Jalisco y Michoacán, México). La superficie total de la cuenca abarca aproximadamente 17000 Km2. Se ha utilizado un método jerárquico de clasificación basado en los trabajos de Dikau et...

Populations of wild grapevine, Vitis vinifera L. subsp. sylvestris (Gmelin) Hegi, were discovered in S.W. of the Iberian Peninsula over the last years. Location, ecological aspects, sanitary characteristics, including the ELISA test to detect specific virus attack, are described. In vitro propagation and conservation are also considered. The...

En el presente trabajo se analiza el riesgo de erosión potencial del suelo en la cuenca alta del río Hozgarganta. Para ello se ha utilizado el método propuesto por PAP/RAC (1997) y modificado posteriormente por Jordán y Martínez-Zavala (Jordán, 2000; Martínez-Zavala, 2001; Martínez-Zavala et al., 2002). Mediante este sistema se ha dividido el...

The soil moisture content can vary the behavior of biochemical activity and its incidence on herbicides. The objective of this manuscript was to assess, under controlled laboratory conditions, whether a prolonged 75-day drought can affect the behavior of 4-chloro-2-methylphenoxyacetic acid (MCPA) herbicide and biochemical properties in three...

The use of biostimulants in the bioremediation of polluted soils in order to eliminate/reduce the toxic effects of pesticides on the soil is currently a very common environmental practice. In this study, we studied the bioremediation effect of three biostimulants obtained from sewage sludge by way of an enzymatic hydrolysis and fermentation...