Consulta: subjectFacets:"Management systems"
Registros recuperados: 11
Data/hora: 02/06/2024 02:46:38

Erosión hídrica, productividad, captura de carbono y uso de la radiación solar y agua en tres sistemas de manejo, para la agricultura de ladera en el trópico subhúmedo de México.
Provedor de dados: 32
Autores: Camas Gómez, Robertony.
En el trópico subhúmedo de México, la mayor parte de la agricultura se lleva a cabo en pequeñas unidades de producción en laderas abruptas truncadas donde la erosión del suelo es la principal causa de los bajos rendimientos e ingresos económicos. Con el objetivo de encontrar alternativas tecnológicas sostenibles, se evaluaron a nivel de microcuenca los sistemas: maíz en labranza cero con pastoreo (MLCP); maíz en barreras de muro vivo (MBMV) y milpa intercalada con árboles frutales (MIAF), en términos del control de la erosión, productividad, uso  del agua y radiación solar, y captura de carbono. En los tres sistemas se determinó la relación entre la posición del suelo en la ladera en función de la pendiente con las condiciones de fertilidad del mismo, lo...
Palavras-chave: Sistemas de manejo; Laderas; Erosión; Productividad; Captura de carbono; Management systems; Hillside; Carbon capture; Productivity; Edafología; Doctorado.
Ano: 2011
URL: http://hdl.handle.net/10521/543

Sistema con enfoque semántico para la gestión vía web de recursos de información forestal.
Provedor de dados: 32
Autores: Guerra García, Evelín Jazmín.
Dentro de los muchos servicios que proporciona la web, el acceso a fuentes de información documental dispersas en millones de computadores en todo el mundo debe de ser cada vez más rápido, menos complicado y adaptados a las expectativas de los usuarios. El acceso debe proporcionar resultados más precisos y aproximados a lo que el usuario desea obtener, apoyándolo así para tomar decisiones. Se plantea un reto importante para el acceso y búsqueda inteligente frente al cúmulo cada vez más vasto y diverso de recursos de información (RI). Los sistemas de gestión para la web deben reconocer el contenido de los distintos RI,  así como de considerar ese contenido para el  almacenamiento y solución a las preguntas planteadas. En áreas del conocimiento donde se...
Palavras-chave: Web semántica; Recursos de información forestal; Especies maderables/no maderables; Sistemas de gestión; XML; Semantic web; Forest information resources; Timber/non-timber species; Management systems; Cómputo Aplicado; Maestría.
Ano: 2011
URL: http://hdl.handle.net/10521/637

Erosión hídrica, productividad, captura de carbono y uso de la radiación solar y agua en tres sistemas de manejo, para la agricultura de ladera en el trópico subhúmedo de México.
Provedor de dados: 32
Autores: Camas Gómez, Robertony.
En el trópico subhúmedo de México, la mayor parte de la agricultura se lleva a cabo en pequeñas unidades de producción en laderas abruptas truncadas donde la erosión del suelo es la principal causa de los bajos rendimientos e ingresos económicos. Con el objetivo de encontrar alternativas tecnológicas sostenibles, se evaluaron a nivel de microcuenca los sistemas: maíz en labranza cero con pastoreo (MLCP); maíz en barreras de muro vivo (MBMV) y milpa intercalada con árboles frutales (MIAF), en términos del control de la erosión, productividad, uso  del agua y radiación solar, y captura de carbono. En los tres sistemas se determinó la relación entre la posición del suelo en la ladera en función de la pendiente con las condiciones de fertilidad del mismo, lo...
Palavras-chave: Sistemas de manejo; Laderas; Erosión; Productividad; Captura de carbono; Management systems; Hillside; Carbon capture; Productivity; Edafología; Doctorado.
Ano: 2011
URL: http://hdl.handle.net/10521/543

Melhorando a qualidade dos sistemas produtivos.
Provedor de dados: 14
Autores: SALTON, J. C.; TOMAZI, M.
bitstream/item/218500/1/SOLO-VIVO-P.-50.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Atributos físicos do solo; Physical soil attributes; Qualidade; Manejo do Solo; Matéria Orgânica; Management systems; Organic matter.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1127365

Informações fitotécnicas para potencializar o desempenho produtivo da cultivar de trigo BRS 404 no Cerrado do Brasil Central.
Provedor de dados: 14
Autores: CHAGAS, J. H.; SOARES SOBRINHO, J.; PIRES, J. L. F.; SÓ E SILVA, M.; ALBRECHT, J. C.; CUNHA, G. R. da; MORESCO, E. R.
As indicações de cultivo e de manejo do trigo de sequeiro, sem irrigação (de segunda safra ou safrinha), apesar dos avanços e dos ajustes das tecnologias nos sistemas agrícolas da região de cerrado do Brasil Central, ainda são baseadas em informações geradas nas décadas de 1970 e de 1980, que constam nos primeiros exemplares de recomendações técnicas da cultura do trigo e que vem sendo adaptadas até hoje, independentemente da cultivar e do sistema de cultivo adotado. Nesse tempo, o cenário agrícola passou por alterações que exigiram ajustes nas tecnologias disponíveis, dentre as quais, a adoção do Sistema Plantio Direto.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: BRS 404; Trigo de Sequeiro; Variedade; Comportamento de Variedade; Manejo; Sistema de Produção; Wheat; Cultivars; Production technology; Management systems.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1093149

Designing a Scientific Management System for a Growing Science-Based Company
Provedor de dados: 31
www.ifama.org
Tipo: Journal Article
Palavras-chave: Human resource management; Requisite organization; Management systems; Industrial Organization.
Ano: 2010
URL: http://purl.umn.edu/93564

Long-term C-CO2 emissions and carbon crop residue mineralization in an oxisol under different tillage and crop rotation systems
Provedor de dados: 90
Autores: Campos,Ben-Hur Costa de; Amado,Telmo Jorge Carneiro; Tornquist,Carlos Gustavo; Nicoloso,Rodrigo da Silveira; Fiorin,Jackson Ernani.
Soil C-CO2 emissions are sensitive indicators of management system impacts on soil organic matter (SOM). The main soil C-CO2 sources at the soil-plant interface are the decomposition of crop residues, SOM turnover, and respiration of roots and soil biota. The objectives of this study were to evaluate the impacts of tillage and cropping systems on long-term soil C-CO2 emissions and their relationship with carbon (C) mineralization of crop residues. A long-term experiment was conducted in a Red Oxisol in Cruz Alta, RS, Brazil, with subtropical climate Cfa (Köppen classification), mean annual precipitation of 1,774 mm and mean annual temperature of 19.2 ºC. Treatments consisted of two tillage systems: (a) conventional tillage (CT) and (b) no tillage (NT) in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Management systems; No tillage; Conventional tillage; Greenhouse gases.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000300017

Physical quality of an Oxisol cultivated with maize submited to cover crops in the pre-cropping period
Provedor de dados: 90
Autores: Pereira,Fabiana de Souza; Andrioli,Itamar; Beutler,Amauri Nelson; Almeida,Cinara Xavier de; Pereira,Faber de Souza.
The intensive use of land alters the distribution of the pore size which imparts consequences on the soil physical quality. The Least Limiting Water Range (LLWR) allows for the visualization of the effects of management systems upon either the improvement or the degradation of the soil physical quality. The objective of this study was to evaluate the physical quality of a Red Latosol (Oxisol) submited to cover crops in the period prior to the maize crop in a no-tillage and conventional tillage system, using porosity, soil bulk density and the LLWR as attributes. The treatments were: conventional tillage (CT) and a no-tillage system with the following cover crops: sunn hemp (Crotalaria juncea L.) (NS), pearl millet (Pennisetum americanum (L.) Leeke) (NP)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Management systems; Physical attributes; Least limiting water range.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000100021

Spatial Variability of Soil Properties in Archeological Dark Earth Sites under Cacao Cultivation
Provedor de dados: 90
Autores: Silva,Douglas Marcelo Pinheiro da; Campos,Milton César Costa; Franciscon,Uilson; Alho,Leandro Coutinho; Santos,Luis Antônio Coutrim dos; Paula Neto,Pérsio de; Bergamin,Anderson Cristian; Souza,Zigomar Menezes de.
ABSTRACT Soils with an A horizon formed by human activity, an anthropogenic A horizon, are found in the Amazon Region. Few studies have examined the spatial distribution of the properties of these soils. We mapped the spatial variability of some soil properties in an area of Archaeological Dark Earth (ADE) in the Brazilian Amazon. A sampling grid was defined over an area of 42 × 88 m under cacao cultivation in which sampling points were established at a spacing of 6 × 8 m, for a total of 88 points. Samples were collected from the 0.00-0.05, 0.05-0.10, 0.10-0.20, and 0.20-0.30 m depth layers. Soil texture, aggregate stability, and organic carbon (OC) analyses were performed on disturbed soil samples. Undisturbed samples were used to determine soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Indian Dark Earth; Management systems; Amazon soils; Anthropogenic soils.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100415

Aggregate stability by the "high energy moisture characteristic" method in an oxisol under differentiated management
Provedor de dados: 90
Autores: Silva,Érika Andressa da; Oliveira,Geraldo César de; Silva,Bruno Montoani; Carducci,Carla Eloize; Avanzi,Junior Cesar; Serafim,Milson Evaldo.
Studies testing the High Energy Moisture Characteristic (HEMC) technique in tropical soils are still incipient. By this method, the effects of different management systems can be evaluated. This study investigated the aggregation state of an Oxisol under coffee with Brachiaria between crop rows and surface-applied gypsum rates using HEMC. Soil in an experimental area in the Upper São Francisco region, Minas Gerais, was studied at depths of 0.05 and 0.20 m in coffee rows. The treatments consisted of 0, 7, and 28 Mg ha-1 of agricultural gypsum rates distributed on the soil surface of the coffee rows, between which Brachiaria was grown and periodically cut, and compared with a treatment without Brachiaria between coffee rows and no gypsum application. To...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aggregation; Coffee production; Management systems; Method.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500028

Developing a Soil Physical Quality Index (SPQi) for lowlands under different deployment times of no-tillage
Provedor de dados: 63
Autores: Reis,Diony Alves; Lima,Claudia Liane Rodrigues de; Bamberg,Adilson Luís.
ABSTRACT: Soil physical quality in lowlands from the Pampa biome under no-tillage (NT) plays an important role; therefore, this study aimed to establish a soil physical quality index (SPQi) from a minimum data set to detect the effects of different deployment times of NT in an Albaqualf. The comparison of areas with one (NT1), three (NT3), five (NT5) and seven (NT7) years of notillage was established using as reference a non-cultivated field plot (NC) for at least thirty years, nearby the sites under NT. Soil samples with undisturbed and disturbed structure were collected to determine the physical quality indicators and soil organic matter (SOM) fractions. The factor analysis (FA) was used to identify and select a minimum data set. The SPQi was elaborated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Factor analysis; Minimum data set; Management systems; Lowland soils.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001200157