R&D Concentration Under Endogenous Fixed Costs: Evidence from Genetically Modified Corn Seed
نویسندگان
چکیده
منابع مشابه
R&d Concentration under Endogenous Fixed Costs: Evidence from Genetically Modified Corn Seed
We examine the role of fixed costs in research and development (R&D) in the market for genetically modified (GM) corn seed. In a mixed model of horizontal differentiation by genetic traits and vertical differentiation by productivity, we derive the empirically testable lower bounds to R&D concentration when R&D investments and market entry are jointly determined. When R&D investments translate ...
متن کاملSurvey Evidence on Producer Use and Costs of Genetically Modified Seed
National survey data collected for 1997 in USDA’s Agricultural Resource Management Study was used to derive implications and pose hypotheses about the impact on pesticide use, production practices, and producer costs of using genetically modified (GM) seed in soybean and cotton production. Results of the analysis suggest concurrence with scientific and industry claims about the environmental qu...
متن کاملGenetically Modified Corn— Environmental Benefits and Risks
Corn is one of humankind’s earliest innovations. It was domesticated 10,000 years ago when humans learned to cross-pollinate plants and slowly turned a scraggly nondescript grass called teosinte into plump, productive modern corn (Figure 1). As needs change, so does plant breeding. Today, while biotech super-giants manipulate corn genetics to satisfy farmer desires and a global market, indigeno...
متن کاملEffect of feeding genetically modified Bt-corn on allergic disease
The rising prevalence of allergic disease in the last decades is unexplained. However, it has been postulated that the widespread introduction of genetically modified (GM) foods since 1996 may play a role in this evolving allergic disease epidemic. Currently, the most common GM plant is the genetically engineered Bacillus thuringiensis (Bt)-corn. This transgene confers resistance against corn b...
متن کاملNutritional evaluation of genetically modified maize corn performed on rats.
The aim of this study was to determine the composition and nutritional value of conventional and transgenic, so-called Roundup Ready (RR) maize with an introduced gene of glyphosate resistance. Crude protein, crude fibre, ash, fat, starch, sugar, amino acids, fatty acid and macroelement levels were determined by chemical analysis. In both maize lines a low level of Ca (0.15 g.kg-1 DM) and of th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: American Journal of Agricultural Economics
سال: 2017
ISSN: 0002-9092,1467-8276
DOI: 10.1093/ajae/aax036