Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 5
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Effects of Bt Cotton in India During the First Five Years of Adoption AgEcon
Sadashivappa, Prakash; Qaim, Matin.
While previous research has analyzed the impacts of Bt cotton in India, most available studies are based on one or two years of data only. We analyze the technology’s performance over the first five years of adoption, using panel data with three rounds of observations. On average, Bt adopting farmers realize pesticide reductions of about 40%, and yield advantages of 30-40%. Profit gains are in a magnitude of US $60 per acre. These benefits have been sustainable over time. Farmers’ satisfaction is reflected in a high willingness to pay for Bt seeds. Nonetheless, in 2006 Indian state governments decided to establish price caps at levels much lower than what companies had charged before. This intervention has further increased farmers’ profits, but the impact...
Tipo: Journal Article Palavras-chave: Biotechnology; Bt cotton; Genetically modified crops; Farm survey; India; Seed markets; Technology adoption; Willingness to pay (WTP); Environmental Economics and Policy; Research and Development/Tech Change/Emerging Technologies; O32; O33; Q16; Q55; Q58.
Ano: 2009 URL: http://purl.umn.edu/49947
Imagem não selecionada

Imprime registro no formato completo
Effects of Seed and Farm Characteristics on Cottonseed Choice: A Choice-Based Conjoint Experiment in the Mississippi Delta AgEcon
Banerjee, Swagata (Ban); Hudson, Darren; Martin, Steven W..
Producers’ preferences for cottonseed with respect to price, seed type, yield, and fiber quality are examined by a willingness-to-pay approach via mail surveys. Results indicate a positive willingness to pay (WTP) for technology relative to conventional cottonseed, and WTP increases with the level of technology. Yield and quality also show a positive WTP. Larger farms have a higher WTP for technology, and farms with more farm labor have a lower WTP for technology. These results suggest economies of size in technology adoption (biotechnology is not size-neutral) and that labor and biotechnology are direct substitutes.
Tipo: Journal Article Palavras-chave: Biotechnology; Conjoint analysis; Conjoint (choice) experiment; Cotton; Farm labor; Farm size; Fiber quality; Willingness to pay (WTP); D24; Q12; Q16.
Ano: 2007 URL: http://purl.umn.edu/37054
Imagem não selecionada

Imprime registro no formato completo
Farmer Willingness to Pay for Seed-Related Information: Rice Varieties in Nigeria and Benin AgEcon
Horna, J. Daniela; Smale, Melinda; von Oppen, Matthias.
A typical private good is defined by its excludability and rivalry characteristics. Information embodied in a technology might not generate rivalry among its users. By contrast, excludability is certainly a characteristic of this kind of information and its delivery can generate incentives for private participation. This study examines farmers’ preferences for seed of new rice varieties and their willingness to pay for seed-related information in villages of Nigeria and Benin. Conjoint analysis is used to estimate the structure of farmers’ preferences for rice seed given a set of alternatives. Farmers are considered to be consumers of seed as a production input, preferring one variety over another based on the utility they obtain from its attributes, which...
Tipo: Working or Discussion Paper Palavras-chave: Seed-related information; Conjoint analysis; Rice attributes; Farmers’ preferences; Technology; Seed markets; Willingness to pay (WTP); Crop Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/58587
Imagem não selecionada

Imprime registro no formato completo
Restoration ecology of coastal lagoons: new methods for the prediction of ecological trajectories and economic valuation ArchiMer
De Wit, Rutger; Rey-valette, Helene; Balavoine, Juliette; Ouisse, Vincent; Lifran, Robert.
Conservation of the seven lagoons of the Palavas complex (southern France) has been severely impaired by nutrient over-enrichment during at least four decades. The effluents of the Montpellier wastewater treatment plant (WWTP) represented the main nutrient input. To improve the water quality of these lagoons, this WWTP was renovated and upgraded and, since the end of 2005, its effluents have been discharged 11 km offshore into the Mediterranean (total investment €150 M). Possibilities of ecosystem restoration as part of a conservation programme were explored by a focus group of experts. Their tasks were: (i) to evaluate the impact of the reduction of the nutrient input; (ii) if necessary, to design additional measures for an active restoration programme;...
Tipo: Text Palavras-chave: Coastal lagoon; Seagrass meadow; Marine and brackish Magnoliophyta; Phytoplankton; Ecosystem services; Willingness to pay (WTP); Ecosystem trajectory' nutrient enrichment; Oligotrophication; Sediment N and P contents; Water Framework Directive.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00317/42867/42368.pdf
Imagem não selecionada

Imprime registro no formato completo
WILLINGNESS TO PAY FOR ENVIRONMENTAL SERVICE OF FOREST TREES BY COOPERATE ORGANISATIONS AgEcon
Adekunle, M.F.; Adedokun, M.O.; Adedoja, A.A..
Payments for environmental services (PES) especially of the forests are considered a potential instrument to mitigate environment and development challenges faced in many tropical countries. The success of any PES scheme is highly dependent on reliable economic data and monetary values of the services provided by the forest trees and vegetation. Hence the relevance of this study which adopted the contingent valuation method (CVM) to derive a monetary valuation for the environmental service functions of forest trees in University of Agriculture, Abeokuta (UNAAB) urban environment. Data were obtained from a multistage random sampling of 48 out of the 75 registered students’ Corporate Organisation made of Academic, Religion and Socio-cultural organisations...
Tipo: Report Palavras-chave: Contingent valuation; Environmental services; Willingness to pay (WTP); Environmental Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/54406
Registros recuperados: 5
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