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| Registros recuperados: 54 | |
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| Asafu-Adjaye, John. |
| This study explored the extent to which various factors affect Fijian cane farmers’ adoption of soil conservation measures. The significant factors affecting perception of the soil erosion problem include age, education, ethnicity, and extension services. On the other hand, the significant factors affecting soil conservation effort include perception of the erosion problem, net farm income, farm size, land type, and extension services. In general, personal characteristics appear to affect perceptions of soil erosion while the extent of conservation effort is affected by economic and physical factors. The resulting implications for soil conservation policy are discussed. |
| Tipo: Journal Article |
Palavras-chave: Fiji; Ordered probit model; Soil conservation; Soil erosion; Sugarcane; Farm Management; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/36710 |
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| Wu, JunJie. |
| The Resource and Agricultural Policy System (RAPS) is upgraded and documented in this technical report. RAPS was developed to estimate the environmental impacts of farming practices and policy in 128,591 National Resources Inventory (NRI) sites in the Central United States (the Corn Belt, Lake States, and Northern Plains). This modeling system integrates the effects of soils, climate, crops, and management practices on several environmental indicators including nitrate runoff and leaching, pesticide runoff and leaching, water and wind erosion, and soil organic carbon. RAPS can be used to provide timely information on the nation's environmental health as it is impacted by agriculture and by changes in agricultural and resource policies. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Agricultural policy; Carbon sequestration; Conservation practices; Environmental effects; Integrated modeling systems; Nitrate water pollution; Soil erosion; Agricultural and Food Policy. |
| Ano: 2000 |
URL: http://purl.umn.edu/18654 |
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| Pender, John L.; Nkonya, Ephraim M.; Kato, Edward; Kaizzi, Crammer; Ssali, Henry. |
| We investigate the impacts of coffee and cotton production on land management and land degradation in Uganda, based on a survey of 851 households and soil measurements in six major agro-ecological zones, using matching and multivariate regression methods. The impacts of cash crop production vary by agro-ecological zones and cropping system. In coffee producing zones, use of organic inputs is most common on plots growing coffee with other crops (mainly bananas), and least common on mono-cropped coffee. Both mono-cropped coffee and mixed coffee plots have lower soil erosion than other plots in coffee producing zones because of greater soil cover. Potassium depletion is much greater on mixed banana-coffee plots. In the cotton production zone, few land... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Land management; Land degradation; Soil nutrient depletion; Soil erosion; Agricultural commercialization; Cash crops; Uganda; Agricultural and Food Policy; International Development; Production Economics; Resource /Energy Economics and Policy; Q13; Q16; Q17. |
| Ano: 2009 |
URL: http://purl.umn.edu/50760 |
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| Franco, Juan Agustin; Calatrava-Requena, Javier. |
| This paper analyses the process of adoption of no tillage in South-eastern Spain’s olive groves. Olive tree groves in South-eastern Spain’s mountainous areas are subject to a high risk of soil erosion, which is the main environmental problem for this crop, and have to incur in high costs of soil conservation. This results in a greater difficulty to comply with the practices required to benefit from both the single payment and agri-environmental schemes. In many high-steeped areas, farmers have opted for non-tillage practices as an alternative to other conservation practices. Using our own data from a survey carried out in 2006 among 215 olive tree farmers from the Granada Province in Southern Spain regarding the adoption of soil conservation and management... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Spanish olive groves; Soil erosion; No tillage; Crop Production/Industries; Land Economics/Use. |
| Ano: 2008 |
URL: http://purl.umn.edu/44014 |
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| Claassen, Roger; Hansen, LeRoy T.; Peters, Mark; Breneman, Vincent E.; Weinberg, Marca; Cattaneo, Andrea; Feather, Peter; Gadsby, Dwight M.; Hellerstein, Daniel; Hopkins, Jeffrey W.; Johnston, Paul V.; Morehart, Mitchell J.; Smith, Mark. |
| Agri-environmental policy is at a crossroads. Over the past 20 years, a wide range of policies addressing the environmental implications of agricultural production have been implemented at the Federal level. Those policies have played an important role in reducing soil erosion, protecting and restoring wetlands, and creating wildlife habitat. However, emerging agri-environmental issues, evolution of farm income support policies, and limits imposed by trade agreements may point toward a rethinking of agri-environmental policy. This report identifies the types of policy tools available and the design features that have improved the effectiveness of current programs. It provides an indepth analysis of one policy tool that may be an important component of a... |
| Tipo: Report |
Palavras-chave: Conservation programs; Environmental policy; Agricultural policy; Policy instruments; Agricultural program design; Soil erosion; Nitrogen runoff; Environmental Economics and Policy. |
| Ano: 2001 |
URL: http://purl.umn.edu/33983 |
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| Gassman, Philip W.; Williams, Jimmy R.; Benson, Verel W.; Izaurralde, R. Cesar; Hauck, Larry M.; Jones, C. Allan; Atwood, Jay D.; Kiniry, James R.; Flowers, Joan D.. |
| The development of the field-scale Erosion Productivity Impact Calculator (EPIC) model was initiated in 1981 to support assessments of soil erosion impacts on soil productivity for soil, climate, and cropping conditions representative of a broad spectrum of U.S. agricultural production regions. The first major application of EPIC was a national analysis performed in support of the 1985 Resources Conservation Act (RCA) assessment. The model has continuously evolved since that time and has been applied for a wide range of field, regional, and national studies both in the U.S. and in other countries. The range of EPIC applications has also expanded greatly over that time, including studies of (1) surface runoff and leaching estimates of nitrogen and... |
| Tipo: Working or Discussion Paper |
Palavras-chave: APEX; Carbon sequestration; Climate change; EPIC; Modeling; Soil erosion; Water quality; Research Methods/ Statistical Methods. |
| Ano: 2005 |
URL: http://purl.umn.edu/18372 |
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| Franco, Juan Agustin; Calatrava-Leyva, Javier. |
| This paper presents results from a survey carried out in 2005 among 147 olive tree farmers from the Alto Genil River Basin in Southern Spain regarding the adoption of soil conservation and management practices. Olive tree groves in South-eastern Spain's mountainous areas are subject to a high risk of soil erosion and have to incur in high costs of soil conservation. This results in great difficulties to comply with cross-compliance and to benefit from agri-environmental schemes. Our main objectives are to analyse the current level of adoption of soil conservation practices and to analyse which socio-economic and institutional factors determine such adoption. Three Probit models are estimated. Dependant variables are three different soil conservation... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Olive groves; Soil erosion; Soil conservation; Cross compliance; Crop Production/Industries; Q12; Q24. |
| Ano: 2006 |
URL: http://purl.umn.edu/25787 |
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| Lanzanova,Mastrângello Enívar; Eltz,Flávio Luiz Foletto; Nicoloso,Rodrigo da Silveira; Cassol,Elemar Antonino; Bertol,Ildegardis; Amado,Telmo Jorge Carneiro; Girardello,Vitor Cauduro. |
| Soil erosion is one of the chief causes of agricultural land degradation. Practices of conservation agriculture, such as no-tillage and cover crops, are the key strategies of soil erosion control. In a long-term experiment on a Typic Paleudalf, we evaluated the temporal changes of soil loss and water runoff rates promoted by the transition from conventional to no-tillage systems in the treatments: bare soil (BS); grassland (GL); winter fallow (WF); intercrop maize and velvet bean (M+VB); intercrop maize and jack bean (M+JB); forage radish as winter cover crop (FR); and winter cover crop consortium ryegrass - common vetch (RG+CV). Intensive soil tillage induced higher soil losses and water runoff rates; these effects persisted for up to three years after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cover crops; Water runoff; Soil erosion. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000600025 |
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| Bovi,Renata Cristina; Silva,Laura Fernanda Simões da; Zenero,Mariana Delgado Oliveira; Carvalho,Camila Carolina de; Cooper,Miguel. |
| Abstract Erosion generates large amounts of sediment, which may be deposited at the site of origin, on the slope of a hill, or along waterways. The transportability of each type of sediment by runoff and its potential for subsequent deposition largely depends on its morphological features and particle size distribution. The aim of this study is to describe and characterize the morphology and micromorphology of sediments deposited in a reforested area and to understand the dynamics of the transport process. In order to understand the sedimentation processes, the following analyses were performed: particle size distribution, with and without the use of a dispersant solution; statistical analysis of the sand fraction using Folk and Ward parameters; sediment... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil erosion; Sedimentation; Particle size; Silting. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100526 |
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| Registros recuperados: 54 | |
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