Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 6
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
EFECTO DE LA ADICIÓN DE BIOSOLIDOS URBANOS Y DE SALMONICULTURA SOBRE LA GERMINACIÓN DE SEMILLAS DE LECHUGA (Lactuca sativa L.) EN UN SUELO PATAGONICO R.C. Suelo Nutr. Veg.
Celis,José; Sandoval,Marco; Zagal,Erick; Briones,Mario.
Los biosólidos de las aguas domiciliarias y de la industria de la salmonicultura han aumentado notoriamente en los últimos años en Chile. Esto ha generado la urgente necesidad de buscar alternativas para su disposición final, de tal forma que no constituyan riesgo para la salud y el medioambiente. En el presente estudio se analizaron los efectos sobre la germinación de semillas de lechuga como consecuencia de la aplicación de este tipo de biosólidos orgánicos en un suelo Andic cryofluvents degradado patagónico. Los biosólidos se adicionaron al suelo, los tratamientos fueron: lodo urbano (BU), biosólido de piscicultura (BP) y biosólido de salmonicultura en lago (BL) a diferentes tasas: 25, 50, 75, 100 y 150 Mg ha-1. Se usó un testigo, consistente en suelo...
Tipo: Journal article Palavras-chave: Residuos de salmonicultura; Fitotoxicidad; Lodo urbano; Fertilizante orgánico; Biosólidos.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912006000300002
Imagem não selecionada

Imprime registro no formato completo
Effect of Irrigation Levels on Dissolved Organic Carbon Soil Distribution and the Depth Mobility of Chlorpyrifos Chilean J. Agric. Res.
Junod,Julio; Zagal,Erick; Sandoval,Marco; Barra,Ricardo; Vidal,Gladys; Villarroel,Mario.
Water flows provided by irrigation systems may be associated with dissolved organic carbon (DOC) content in the soil solution and may modify the mobility of pesticides, such as chlorpyrifos (CHP). These compounds were analyzed under field conditions, evaluating their distribution in the soil profile under excessive irrigation in a Humic Haploxerand soil. The trial was carried out in soil columns located under the canopy of apple trees (Malus domestica Borkh.) in an orchard located in the Bío-Bío Region, Chile. The insecticide CHP was applied 120 g hL-1, and later the natural run off was collected from the foliage to the columns. Surface irrigation was used as a control, the equivalent to 4 L h-1 weekly, plus two treatments over the columns of 6 and 8 L h-1...
Tipo: Journal article Palavras-chave: Pesticides; Organic matter; Volcanic soil.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000300017
Imagem não selecionada

Imprime registro no formato completo
Effect of organic and mineral amendments upon soil respiration and microbial biomass in a saline-sodic soil Ciencia e Investigación Agraria
Celis,José E; Sandoval,Marco; Martínez,Bárbara; Quezada,Celerino.
J.E. Celis, M. Sandoval, B. Martínez, and C. Quezada. 2013. Effect of organic and mineral amendments upon soil respiration and microbial biomass in a saline-sodic soil. Cien. Inv. Agr. 40(3): 571-580. An understanding of soil carbon stocks and fluxes in saline-sodic soils is becoming critical in environmental management because salinity and sodicity are predicted to increase worldwide. The effects of amendment with sewage sludge (SW), mined gypsum (MG) and synthetic gypsum (SG) on the soil respiration rate and soil (S) microbial biomass (SMB) of a saline-sodic soil were assessed in vitro over 60 days under controlled conditions. The treatments were: T1 = S + MG (7 t ha-1); T2 = S + MG (7 t ha-1) + SW (90 t ha-1); T3 = S + SG (7 t ha-1); T4 = S + SG (7 t...
Tipo: Journal article Palavras-chave: Arid soil; Biological activity; Gypsum; Organic matter; Sewage sludge; Soil respiration.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000300010
Imagem não selecionada

Imprime registro no formato completo
Influence of Conservation Tillage and Soil Water Content on Crop Yield in Dryland Compacted Alfisol of Central Chile Chilean J. Agric. Res.
Martinez G,Ingrid; Ovalle,Carlos; Del Pozo,Alejandro; Uribe,Hamil; Valderrama V,Natalia; Prat,Christian; Sandoval,Marco; Fernández,Fernando; Zagal,Erick.
Chilean dryland areas of the Mediterranean climate region are characterized by highly degraded and compacted soils, which require the use of conservation tillage systems to mitigate water erosion as well as to improve soil water storage. An oat (Avena sativa L. cv. Supernova-INIA) - wheat (Triticum aestivum L. cv. Pandora-INIA) crop rotation was established under the following conservation systems: no tillage (Nt), Nt + contour plowing (Nt+Cp), Nt + barrier hedge (Nt+Bh), and Nt + subsoiling (Nt+Sb), compared to conventional tillage (Ct) to evaluate their influence on soil water content (SWC) in the profile (10 to 110 cm depth), the soil compaction and their interaction with the crop yield. Experimental plots were established in 2007 and lasted 3 yr till...
Tipo: Journal article Palavras-chave: Neutron probe; Penetrometer resistance; Oat; Subsoiling; Water erosion; Wheat.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400018
Imagem não selecionada

Imprime registro no formato completo
Plant Response to Salmon Wastes and Sewage Sludge Used as Organic Fertilizer on Two Degraded Soils Under Greenhouse Conditions Chilean J. Agric. Res.
Celis,José; Sandoval,Marco; Barra,Ricardo.
The potential toxicity of urban sewage and farmed salmon sludge, as well as their fertilizer potential, was evaluated by a battery of tests carried out with lettuce (Lactuca sativa L.) and annual ryegrass (Lolium multiflorum Lam.) cv. Winter Star. Wastes were evaluated in a Patagonian soil (Andic cryofluvent) and a granitic soil (Ultic Palexeralf). The treatments were municipal sewage sludge (MSS), salmon ground-farming waste (PSW) and salmon lake-farming waste (LSW) at different rates: 25, 50, 75, 100 and 150 t ha-1. Bioassays in lettuce were conducted for germination index (GI), radicle and hypocotyl structure length. Test in ryegrass were conducted for aboveground biomass yield. The phytotoxicological results from Patagonian soil showed significant...
Tipo: Journal article Palavras-chave: Fish sludge; Salmon waste; Urban sludge; Organic fertilizer; Degraded soil.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300007
Imagem não selecionada

Imprime registro no formato completo
VARIABILIDAD ASOCIADA A LA DETERMINACIÓN DE RESIDUOS DE CLORPIRIFOS AL SER APLICADO EN UN HUERTO DE MANZANOS R.C. Suelo Nutr. Veg.
Junod,Julio; Zagal,Erick; Sandoval,Marco; Venegas,Alejandro; Campos,Jorge; Radrigan,Rudi; Barra,Ricardo; Vidal,Gladys.
El presente estudio tiene por objetivo probar mediante ensayos supervisados la variabilidad de los residuos de clorpirifos (CHP) asociados a una metodología de muestreo validada en terreno, al aplicar el ingrediente activo (IA) en huerto de manzanos, con dos diferentes metodologías de aspersión y en épocas diferentes de desarrollo vegetativo. Se estudió la persistencia al aplicar 1,8 kg ha -1(Lorsban 50%WP®, Dow AgroScience, USA), mediante nebulizadora con bomba de espalda con motor (NBEM) y con nebulizadora de alto volumen (NAV). Se evaluó el modelo que representa el mejor ajuste de la declinación de los residuos a través de regresión no lineal. Los resultados muestran altos coeficientes de variación (CV) en ambos métodos de aplicación, NBEM (69%) y NAV...
Tipo: Journal article Palavras-chave: Pesticidas; Residuos; Degradación.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000300002
Registros recuperados: 6
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional