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ADOPTION OF BIOENGINEERED CROPS AgEcon
Fernandez-Cornejo, Jorge; McBride, William D..
Use of crop biotechnology products, such as genetically engineered (GE) crops with input traits for pest management, has risen dramatically since commercial approval in the mid-1990s. This report addresses several of the economic dimensions regarding farmer adoption of bioengineered crops, including herbicidetolerant and insect-resistant varieties. In particular, the report examines: (1) the extent of adoption of bioengineered crops, their diffusion path, and expected adoption rates over the next few years; (2) factors affecting the adoption of bioengineered crops; and (3) farm-level impacts of the adoption of bioengineered crops. Data used in the analysis are mostly from USDA surveys.
Tipo: Report Palavras-chave: Biotechnology; Technology adoption; Genetic engineering; Pest management; Financial effects; Tillage; Herbicide-tolerant crops; Bt crops; Corn; Soybeans; Cotton; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2002 URL: http://purl.umn.edu/33957
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An update on genetically modified crops Ciencia e Investigación Agraria
Schwember,Andrés R.
A. R. Schwember. 2008. An update on genetically modified crops. Cien. Inv. Agr. 35(3):231-250. Genetically modified (GM) crops were introduced in the mid 1990s and two principal transgenic technologies currently domínate the market, herbicide-tolerant (HT) crops and insect-resistant crops (Bacillus thuringiensis (Bt) crops). HT crops have simplified weed management practices, reduced crop production costs, and have had positive effects on the environment. However, there are concerns about the potential development of weeds resistant to glyphosate, the main herbicide employed with HT crops. A second major worry associated with the use of HT crops is the potential introgression of genes from GM crops into wild relatives (i.e. gene flow) and its potential...
Tipo: Journal article Palavras-chave: Bt crops; Gene flow; Genetically modified crops; Glyphosate; Golden Rice; Herbicide-tolerant crops; Transgenic crops.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000300001
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ASSESSING THE POTENTIAL IMPACT OF BT MAIZE IN KENYA USING A GIS BASED MODEL AgEcon
De Groote, Hugo; Overholt, William; Ouma, James Okuro; Mugo, Stephen.
The Insect Resistant Maize for Africa (IRMA) project is currently developing Bt maize for Kenya. So far, Bt genes with resistance to Chilo partellus, Chilo orichalcociliellus, Eldana Sacharina, and Sesamia calamistis, four of the five major stemborers were successfully incorporated into elite CIMMYT maize inbred line (CML216) and tested in insect bioassays in Kenya. Participatory Rural Appraisals showed that stem borers are indeed a major pest problems for farmers. Four seasons of on-farm crop loss assessment showed an average crop loss of 13.5%, or 0.4 million tons, valued at US$ 80 million. If the project manages to find a Bt gene that is effective to the fifth stemborer, Busseola fusca, adoption rates are likely to be high, and therefore the returns....
Tipo: Conference Paper or Presentation Palavras-chave: Maize; Africa; Genetically Modified Crops; Bt crops; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2003 URL: http://purl.umn.edu/25854
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Probabilistic tools for assessment of pest resistance risk associated to insecticidal transgenic crops Scientia Agricola
Maia,Aline de Holanda Nunes; Dourado Neto,Durval.
One of the main risks associated to transgenic crops expressing Bacillus thuringiensis (Bt) toxins is the evolution of pest resistance. The adoption of Bt crops requires environmental risk assessment that includes resistance risk estimation, useful for definition of resistance management strategies aiming to delay resistance evolution. In this context, resistance risk is defined as the probability of the Bt toxin resistance allele frequency (RFreq) exceeding a critical value (CriticalFreq). Mathematical simulation models have been used to estimate (RFreq) over pest generations. In 1998, Caprio developed a deterministic simulation model with few parameters that can be used to obtain RFreq point estimates from point information about model parameters and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacillus thuringiensis; Bt crops; Modeling; Uncertainty analysis.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000500003
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The U.S. Seed Industry: An Exploration of Statistics Highlighting the Economic Activity of the U.S. Row Crop Seed Industry AgEcon
Roucan-Kane, Maud; Gray, Allan W..
This report presents relevant statistics that highlight the economic activity of the U.S. seed industry. The focus of this report is on the four main U.S. crops: corn, soybean, wheat, and cotton. The report contains three sections. The first is related to the U.S. seed market’s size based on seed sales and expenditures. The second section examines industry investment in research and development (R&D) activity in terms of both budget and human resources. The final section illustrates the impact of the seed industry in terms of intellectual property development, improved productivity, and other benefits. This report focuses on using publicly available data to examine these three areas. In addition, the report presents the results of a survey conducted...
Tipo: Working or Discussion Paper Palavras-chave: Seed industry; Field crops; Biotechnology; Herbicide-tolerant crops; Bt crops; Corn; Soybeans; Cotton; Wheat.; Agribusiness; L11; L16; L65; O33; O34; Q16.
Ano: 2009 URL: http://purl.umn.edu/52549
Registros recuperados: 5
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