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| Registros recuperados: 40 | |
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| Tonsor, Glynn T.; Featherstone, Allen M.. |
| This research evaluates the efficiency of swine firms differing by specialization type and employed technologies. Measures of technical, allocative, scale, economic, and overall efficiency are separately and jointly estimated for farrow-to-finish, farrow-to-feeder, feeder-to-finish, farrow-to-weanling, weanling-to-feeder, and mixed operations. Findings confirm appreciable differences in efficiency and causes of efficiency. Results suggest that overall efficiency of farrow-to-finish and farrow-to-weanling operations is on average lower than farrow-to-feeder, feeder-to-finish, and weanling-to-feeder operations. In addition, Tobit models examining how demographic factors, farm type, and input expenses influence efficiency indicate additional variation across... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Efficiency; Heteroskedastic Tobit; Firm specialization; Future anticipation; Producer heterogeneity; Production technology; Returns to scale; Swine; Livestock Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/35379 |
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| Schuck, Eric C.; Nganje, William E.; Yantio, Debazou; Aquach, Emmanuel. |
| Education can play a critical role in moving farmers in developing countries away from environmentally harmful slash and burn agriculture. The present research examines the extent to which extension education can promote adoption of cropping systems other than slash and burn. Choice of cropping system by farmers in Cameroon, whether slash and burn, multiple crops, or mono-cropping, is modeled as a function of farm size, farmer educational level, and visits by extension personnel. Results indicate that higher visitation rates by extension personnel reduce not only the likelihood of farmers choosing slash and burn agriculture, but also promotes movement into mono-cropping. Since mono-cropping represents a move toward export-oriented agriculture in... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Conservation; Slash and burn; Production technology; Economic development; Farm Management. |
| Ano: 2001 |
URL: http://purl.umn.edu/23587 |
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| Silva,Adilson Nunes da; Romanelli,Thiago Libório; Reichardt,Klaus. |
| Although energy analysis is a way to evaluate the sustainability of production systems, this practice is not often used in the agribusiness. In this context, the castor bean (Ricinus communis L) is an agricultural crop not yet well studied despite its great potential in the Brazilian energetic scenario. This article aimed to evaluate the productive potential of the castor bean oil, using an energetic view applied to two management systems: low (System 1) and medium (System 2) technologies. The quantification of the used material fluxes was made converting these factors in energy units. The input energy fluxes were 3,170.6 MJ ha¹ and 10,366.0 MJ ha¹ for Systems 1 and 2, respectively. The energy balance of System 1 was 11,938.2 MJ ha¹ and that of System 2... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energetic balance; Oil crops; Production technology; Cultivation systems. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000600018 |
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| Registros recuperados: 40 | |
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