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Registros recuperados: 19
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Area-Wide Management of Fruit-Flies: What are the Costs and the Benefits? AgEcon
Florec, Veronique; Sadler, Rohan; White, Benedict.
Increasing volumes and speed of agricultural trade and the opening of new markets for agricultural products create greater challenges to systems established to protect countries from invasive organisms that can be harmful to human and animal health, crops and natural environments. In reaction to the threat of exotic pests and diseases, the World Trade Organization recognises the right of country members to protect themselves from the risks posed by exotic pests and diseases through the application of Sanitary and Phytosanitary (SPS) measures. One possible response from exporting countries facing SPS trade barriers is to obtain pest-free area (PFA) certification. While large benefits can potentially be achieved from greater access to world markets through...
Tipo: Working or Discussion Paper Palavras-chave: Eradication; Surveillance; Queensland Fruit Fly; Area-Wide Management of Pests; Pestfree area; Invasive species; Biosecurity; Agricultural and Food Policy; Crop Production/Industries; International Relations/Trade; Q1; Q17; Q18.
Ano: 2010 URL: http://purl.umn.edu/100881
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Avaliação dos Impactos Econômicos e Sociais do Programa de Erradicação da Doença de Aujeszky no Estado de Santa Catarina AgEcon
Miele, Marcelo; Girotto, Ademir Francisco; Mores, Nelson; Amaral, Armando Lopes Do; Zanella, Janice Reis Ciacci.
Os recursos limitados para a pesquisa agropecuária e a necessidade de conhecer de que forma as tecnologias alteram a competitividade das cadeias produtivas, seu entorno social e o meio ambiente exigem que sejam implementados processos de avaliação de impacto. O presente estudo teve por objetivo avaliar o impacto econômico, social e organizacional do Programa de Erradicação da Doença de Aujeszky no Estado de Santa Catarina, desenvolvido pela Embrapa e instituições parceiras. Este programa foi implementado em 2001 e atingiu sua meta em 2004. Os benefícios gerados representam um retorno positivo para os investimentos.--------------------The limited resources for agricultural research and the need for a better knowledge about the ways that technologies change...
Tipo: Conference Paper or Presentation Palavras-chave: Doença de Aujeszky; Erradicação; Impacto econômico; Impacto social; Aujeszky Disease; Economic impact; Eradication; Social impact; Agribusiness; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008 URL: http://purl.umn.edu/108163
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Biosecurity Economics: Conflicting results in evaluation criteria AgEcon
Goswami, Sarah L..
Determining the optimal policy response to a species invasion is a multidimensional problem. The choice between eradication or containment has social, environmental, political and economic dimensions. Often, economic evaluation is used as a basis to underpin policy decisions. However, under certain conditions economic evaluation criteria may provide conflicting results. Deterministic factors, such as rate of spread, degree of damage and the time until detection, are derived for identifying when caution must be taken with the results of economic evaluation criteria. The conditions under which conflicting results may be obtained between NPV and BCR are identified and linked to policy implications.
Tipo: Conference Paper or Presentation Palavras-chave: Biosecurity economics; Eradication; Containment; Invasive species.
Ano: 2009 URL: http://purl.umn.edu/48158
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Cooperation, Spatial-Dynamic Externalities, and Invasive Species Management AgEcon
Epanchin-Niell, Rebecca S.; Wilen, James E..
Most terrestrial biological invasions occur in landscapes comprising numerous, independently managed properties. Thus, control of invasion spread generally depends on the choices of many managers, each deciding the extent to control invasions on their property. Here we develop a spatially-explicit, integrated model of invasion spread and human behavior to examine how people’s control choices under laissez-faire affect patterns of invasion spread and the total costs and damages imposed by an invader. We evaluate how characteristics of the bioeconomic and social system, including the extent of cooperation among managers, affect the divergence between socially optimal and private control efforts. We find that system-wide invasion externalities generally...
Tipo: Conference Paper or Presentation Palavras-chave: Biological invasions; Cross-boundary; Coordination; Spatial-dynamic processes; Spatial spread; Eradication; Containment; Negotiation; Optimal control; Cooperative management; Environmental Economics and Policy; Land Economics/Use; Public Economics; Resource /Energy Economics and Policy; Q; Q1; Q2; Q5; H4.
Ano: 2010 URL: http://purl.umn.edu/61371
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Counterproductive Counternarcotic Strategies? AgEcon
Andersson, Camilla I.M..
We model the economic incentives surrounding opium crop production in Afghanistan. Specifically, we examine the impact of eradication policies when opium is used as a means of obtaining credit, and when the crops are produced in sharecropping arrangements. The analysis suggests that when perfect credit markets are available, an increased risk of eradication will lead to less land being allocated to opium poppy. However, when opium is used as a means of obtaining credit, the effects of eradication are no longer clear-cut. Finally, under sharecropping arrangements, increased risk of eradication will make the tenants worse off, while landlords may benefit.
Tipo: Working Paper Palavras-chave: Eradication; Informal credit markets; Opium; Sharecropping; Crop Production/Industries; Risk and Uncertainty; Q12.
Ano: 2011 URL: http://purl.umn.edu/118959
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Efeito da temperatura e umidade do substrato na viabilidade de Sclerotium rolfsii - DOI: 10.4025/actasciagron.v32i2.2325 Agronomy
Martins, Marlon Vagner Valentim; Incaper; Silveira, Silvaldo Felipe; UENF; Mussi-Dias, Vicente; UENF; Vieira, Henrique Duarte; UENF.
Avaliou-se a erradicação de escleródios de Sclerotium rolfsii em diferentes temperaturas e umidades do substrato. Testaram-se umidades de 5, 6, 9 e 11 (equivalentes a -5, -3, -1 e -1/3 Bar) e mais 0 e 18% de umidade. As temperaturas testadas foram 40, 48, 52 e 58°C, no tempo de 30 min., seguidos de resfriamento em balcão, em condições de laboratório. Avaliou-se a germinação em meio BDA salino. A 0% de umidade do substrato, nenhuma temperatura foi eficiente na inativação dos escleródios. Para todas as outras umidades testadas, porém, os escleródios foram erradicados em temperaturas acima de 52°C. De todas as quatro temperaturas testadas, apenas a menor (40°C) não inativou os escleródios do patógeno. A 48°C, a erradicação dos...
Palavras-chave: 5.00.00.00-4; 5.01.02.01-0 Escleródio; Solarização do solo; Erradicação Fitopatologia Sclerotia; Soil solarization; Eradication.
Ano: 2010 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2325
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Eficácia do albendazol, oxfendazol e ivermectin no combate às verminoses gastrintestinais dos caprinos. Infoteca-e
CHARLES, T. P.; MEDEIROS, E. M. de A. M..
Teste realizado no Cpatsa, demosntrando que o uso do levamisol, albendazol e perbendazol, nas dosagens recomendadas para ovinos, tem eficiência reduzida quando usadas no combate às verminoses dos caprinos, devido a uma provável subdose.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Vermiose; Erradicação; Goats; Helminth; Eradication; Caprino; Prdoução animal; Caprine; Animal production.
Ano: 1992 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/131763
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Eradication of Exotic Weeds in Australia: Comparing Effort and Expenditure AgEcon
Hester, Susan M.; Odom, Doreen I.S.; Cacho, Oscar J.; Sinden, Jack A..
Weeds have many adverse impacts on agriculture and the environment and therefore are often targets of eradication attempts. Eradication attempts involve large commitments of labour and financial resources over significant periods of time. Using data from 12 Australian weed eradication attempts the authors compare work hours and expenditure on each attempt for various initial-infestation sizes. Analysis of a limited data set shows: (1) that while the eradication effort increases with the initial area of infestation, the effort applied per hectare actually decreases; (2) that application of a greater work effort was not the reason why completed eradications were successful; and (3) that the larger the initial infestation size, the smaller the amount of...
Tipo: Working or Discussion Paper Palavras-chave: Weeds; Eradication; Work effort; Expenditure; Infestation size; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/12921
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Erradicação química da imbaúba e outras espécies lenhosas, nas entrelinhas de seringueira. Infoteca-e
MORAES, V. H. F.; D'ANTONA, O. de J. G..
As imbaubas fazem parte de grupos de especies pioneiras na ocupacao do solo, apos a queimada. Possui capacidade de rebrotar com muito vigor. A cada rocagem, as novas brotacoes ultrapassam rapidamente a altura da camada de cobertura vegetal. A erradicacao da imbauba e', portanto, uma operacao necessaria, nao apenas para reduzir o custo de manutencao das entrelinhas, ja que sao necessarias tres ou mais rocagens por ano para impedir que as seringueiras venham a ser sombreadas, mas tambem para evitar a competicao por nutrientes minerais. A eliminacao por arranque manual das tronqueiras exige muita mao-de-obra. A aplicacao de arbusticidas e' a maneira mais pratica de eliminar a imbauba.
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Seringueira; Hevea brasiliensis; Imbauba; Cecropia; Especie; Erradicacao; Brasil; Amazonas; Rubber tree; Harmful plants; Eradication.
Ano: 1984 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/665334
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Exotic Pests and Trade: When Is Pest-Free Status Certification Worthwhile? AgEcon
Lichtenberg, Erik; Lynch, Lori.
Pest-free status certification is desirable if the demand-side impacts (increased export revenue) and supply-side impacts (lower pest damage and decreased ongoing control costs) exceed the compliance monitoring and eradication costs. Thus, eradication may be optimal without certification. Certification is more likely for regions facing costly treatment requirements (bans) or possessing geographic traits that lower monitoring costs and infestation probabilities than for those exporting higher-valued products. Certification benefits producers but hurts consumers. Thus, political feasibility may be greater if domestic consumption is a small share of the market and if the additional tax burden of certification programs is light.
Tipo: Journal Article Palavras-chave: Exotic pests; Invasive species; Pest-free area; Eradication; Sanitary/phytosanitary regulations; International Relations/Trade.
Ano: 2006 URL: http://purl.umn.edu/10182
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Manejo de especies exóticas invasoras en Patagonia, Argentina: Priorización, logros y desafíos de integración entre ciencia y gestión identificados desde la Administración de Parques Nacionales Ecología austral
Sanguinetti,Javier; Buria,Leonardo; Malmierca,Laura; Valenzuela,Alejandro E. J.; Núñez,Cecilia; Pastore,Hernán; Chauchard,Luis; Ferreyra,Nicolás; Massaccesi,Guillermina; Gallo,Emilce; Chehébar,Claudio.
Invasive alien species management in Patagonia, Argentina: Prioritization, achievements and science-policy integration challenges identified by the National Parks Administration: Invasive alien species are a threat to biodiversity. Management options encompass prevention, early detection, eradication, control, exclusion and even"no action." More technical information is needed to achieve complex management actions successfully. In addition, managers and researchers address the problem with different approaches. Managers seek to prioritize management actions, and for researchers, these species are an opportunity to study basic and/or theoretical aspects, but not always applied to management. However, the management strategies offer a unique opportunity for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological invasions; Conservation; Control; Eradication; Management; Planning; Protected areas.
Ano: 2014 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2014000200007
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Metodos de combate de plantas daninhas na cotonicultura. Infoteca-e
BELTRAO, N.E.de M..
Plantas daninhas; Periodo critico de competicao entre o algodoeiro e as plantas daninhas; Metodos de combate.
Tipo: Documentos (INFOTECA-E) Palavras-chave: Algodao Herbaceo; Arboreo; Moco; Perene; Erva daninha; Combate; Controllle; Erradicacao; Biologico; Gossypium hirsutum; Brasil; Nordeste; Pennial cotton; Annual; Weed Control; Combat; Eradication; Biologica.
Ano: 1988 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/262927
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Moscas-das-frutas (Diptera: Tephritidae) obtidas de frutos comercializados em feiras públicas de Macapá, Amapá. Infoteca-e
ADAIME, R.; JESUS-BARROS, C. R. de; SOUZA-FILHO, M. F. de.
2014
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Plant pest; Pest quarantine; Plant anatomy; Tropical fruit; Guava; Eradication; Praga de planta; Praga quarentenária; Anatomia vegetal; Fruta tropical; Goiabeira; Erradicação.
Ano: 2014 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/1018835
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Optimal control of spatial-dynamic processes: The case of biological invasions AgEcon
Epanchin-Niell, Rebecca S.; Wilen, James E..
This study examines the spatial nature of optimal bioinvasion control. We develop and parameterize a spatially explicit two-dimensional model of species spread that allows for differential control across space and time, and we solve for optimal control strategies. We find that the qualitative nature of optimal strategies depend in interesting ways on aspects of landscape and invasion geometry. For example, we show that reducing the extent of exposed invasion edge, through spread, removal, or strategically employing landscape features, can be an optimal strategy because it reduces long-term containment costs. We also show that optimal invasion control is spatially and temporally “forward-looking” in the sense that strategies should be targeted to slow the...
Tipo: Conference Paper or Presentation Palavras-chave: Invasive species; Spatial-dynamic processes; Spatial spread; Reaction-diffusion; Management; Cellular automaton; Eradication; Containment; Spatial control; Integer programming; Environmental Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy; Q; Q1; Q2; Q5.
Ano: 2010 URL: http://purl.umn.edu/61375
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Optimal Control of Spreading Biological Invasions: For How Long Should We Apply the Brake? AgEcon
Carrasco, Luis Roman; MacLeod, Alan; Knight, John D.; Baker, Richard; Mumford, John D..
Identifying the optimal switching point between different invasive alien species (IAS) management policies is a very complex task and policy makers are in need of modelling tools to assist them. In this paper we develop an optimal control bioeconomic model to estimate the type of optimal policy and switching point of control efforts against a spreading IAS. We apply the models to the case study of Colorado potato beetle in the UK. The results demonstrate that eradication is optimal for small initial sizes of invasion at discovery. High capacity of the agency to reduce spread velocity for several years leads to smaller total overall costs of invasion and makes eradication optimal for larger sizes of initial invasion. In many cases, it is optimal to switch...
Tipo: Conference Paper or Presentation Palavras-chave: Barrier zone; Biosecurity; Dynamic optimization; Eradication; Leptinotarsa decemlineata; Pest risk analysis; Reaction-diffusion.; Risk and Uncertainty; Q1; Q28; Q57.
Ano: 2009 URL: http://purl.umn.edu/50940
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Prevention or Control: Optimal Government Policies for Invasive Species Management AgEcon
Kim, C.S.; Lubowski, Ruben N.; Lewandrowski, Jan; Eiswerth, Mark E..
We present a conceptual, but empirically applicable, model for determining the optimal allocation of resources between exclusion and control activities for managing an invasive species with an uncertain discovery time. This model is used to investigate how to allocate limited resources between activities before and after the first discovery of an invasive species and the effects of the characteristics of an invasive species on limited resource allocation. The optimality conditions show that it is economically efficient to spend a larger share of outlays for exclusion activities before, rather than after, a species is first discovered, up to a threshold point. We also find that, after discovery, more exclusionary measures and fewer control measures are...
Tipo: Journal Article Palavras-chave: Invasive species; Exclusion; Control; Eradication; Public expenditures; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/10176
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Tratamento de germoplasma vegetal visando a erradicacao de fitonematoides. Repositório Alice
TENENTE, R.C.V.; MANSO, E.S.B.G.C.; FIGUEIRA FILHO, E.S..
bitstream/item/177045/1/ID-10595.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Erraddicacao; Plant; Nematodo; Eradication; Germoplasma; Nematóide; Planta; Germplasm.
Ano: 1993 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/171686
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Uso de tratamentos termicos na erradicacao de Aphelenchoides besseyi em sementes de Brachiaria dictyoneura. Repositório Alice
PINHEIRO, F.P.; VIANELLO, R.P.; EBEIDALLA, F.S.; TENENTE, R.C.V..
bitstream/item/177060/1/ID-21549.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Nematoide %% Seed; Treatment; Thermal; Nematode; Eradication; Semente.
Ano: 1997 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/182837
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Weed Invasions: To Control or Not to Control? AgEcon
Cacho, Oscar J.; Wise, Russell M.; Hester, Susan M.; Sinden, Jack A..
When a weed invasion is discovered a decision has to be made as to whether to attempt to eradicate it, contain it or do nothing. Ideally, these decisions should be based on a complete benefit-cost analysis, but this is often not possible. A partial analysis, combining knowledge of the rate of spread, seedbank longevity and economic-analysis techniques, can assist in making the best decision. This paper presents a model to decide when immediate eradication of a weed should be attempted, or whether weed control should be attempted at all. The technique is based on identifying two 'switching points': the invasion size at which it is no longer optimal to attempt eradication, and the invasion size at which it becomes optimal not to apply any form of control. It...
Tipo: Working or Discussion Paper Palavras-chave: Invasive species; Eradication; Containment; Economics; Weed control; Switching point; Farm Management.
Ano: 2004 URL: http://purl.umn.edu/12908
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