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| Registros recuperados: 293 | |
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| Taveira, Luis Renato Silva; Oliveira, Julieta Teresa Aier de. |
| The policy of São Paulo State Government rural settlements, conducted by the Itesp Foundation, has its own technical assistance and rural extension service, brainstormed to attend its public specific demands. This article seeks to check if Itesp’s rural extension program satisfies its settled beneficiaries and if social-economic characteristics interfere in this individual judgment. The research was drawn at Santa Rosa and Rancho Grande settlements, Holy Rose and Big Ranch, respectively, both located at Paranapanema Pontal – SP, Unfortunate River Branch, according to native language. At first interviews concerning quality were conducted amongst settlers, selected intentionally to obtain evaluation parameters of ATER’s service. Elaborated with these... |
| Tipo: Journal Article |
Palavras-chave: Rural settlement; Analysis of multiple correspondences; Likert´s scale; Agribusiness; Q16. |
| Ano: 2008 |
URL: http://purl.umn.edu/61265 |
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| Velandia, Margarita M.; Rejesus, Roderick M.; Segarra, Eduardo; Bronson, Kevin. |
| This paper develops a management zone delineation procedure based on a spatial statistics approach and evaluates its economic impact for the case of Texas cotton production. With the use of an optimization model that utilizes a yield response function estimated through spatial econometric methods, we found that applying variable N rates based on the management zones delineated would result in higher cotton yields and higher net returns, above Nitrogen cost, relative to uniformly applying a single N rate for the whole field. In addition, a variable rate N application using the delineated management zones produced higher net returns, above Nitrogen cost, relative to a variable N rate system where the zones are based solely on landscape position. This is... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Management Zones; Exploratory Spatial Data Analysis; Site-Specific Nitrogen Management; Cotton Precision Agriculture.; Crop Production/Industries; Q1; Q16. |
| Ano: 2006 |
URL: http://purl.umn.edu/35387 |
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| Davis, Todd D.. |
| The 2002 Farm Bill creates several opportunities for landowners to adopt management practices that protect and improve soil and water quality. Landowners considering enrollment in conservation programs must compare the monetary and nonmonetary costs and benefits from removing land from production agriculture. The overall purpose of this invited paper session was to improve the understanding of the factors affecting a landowner’s decision to enroll in conservation programs. Papers addressed the environmental benefits of conservation programs and compared the returns to enrolling in conservation programs to the returns from production agriculture. |
| Tipo: Journal Article |
Palavras-chave: Certainty equivalents; Conservation; Econometrics; Government payments; Risk; Simulation; Q18; Q16; C15; C31. |
| Ano: 2004 |
URL: http://purl.umn.edu/43417 |
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| Labarta, Ricardo A.; Swinton, Scott M.. |
| This paper analyzes the interaction between farmer training in pest management and effects on acute pesticide poisoning and populations of beneficial insects in Nicaragua. Using farm level data from Nicaraguan bean growers, including graduates of Farmer Field Schools (FFS), other integrated pest management (IPM) outreach methods, and farmers without exposure to IPM, we found that small farmers are influenced by pesticide-related acute illness experiences when adopting IPM practices and making decisions about pesticide use. However, exposure to IPM extension programs failed to reduce the use of highly toxic pesticides and increased the number of self-reported acute illness symptoms during the most recent bean crop season. IPM training did result in... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Ecosystem service; Integrated pest management; Agricultural extension; Nicaragua; Farm Management; Q16. |
| Ano: 2005 |
URL: http://purl.umn.edu/19305 |
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| Bullock, David S.. |
| Rausser and Freebairn (1974) proposed a method for empirically measuring the political power of interest groups competing in real-world political economies. In the first half of the 1990s, staunch criticism of PPF methodology appeared. Von Cramon-Taubadel (1992) obtained counter-intuitive results in PPF simulations using a simple model of EU wheat and barley policy instrument use. Bullock (1994) emphasized that PPF methodology requires that observed policy be Pareto efficient policy, which requires researchers to manipulate the dimensions of their models so that the number of interest groups is exactly one more than the number of policy instruments. He concluded “[PPF methods] need not reveal anything meaningful about interest group political power, and... |
| Tipo: Presentation |
Palavras-chave: Political Economy; Q18; Q16; Q48. |
| Ano: 2012 |
URL: http://purl.umn.edu/124118 |
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| Carew, Richard; Smith, Elwin G.; Grant, Cynthia. |
| Production functions to explain regional wheat yields have not been studied extensively in the Canadian prairies. The objective of this study is to employ a Just-Pope production function to examine the relationship between fertilizer inputs, soil quality, biodiversity indicators, cultivars qualifying for Plant Breeders’ Rights (PBR), and climatic conditions on the mean and variance of spring wheat yields. Using regional-level wheat data from Manitoba, Canada, model results show nitrogen fertilizer, temporal diversity, and PBR wheat cultivars are associated with increased yield variance. Mean wheat yield is reduced by the proportion of land in wheat, the interaction of growing temperature and precipitation, and spatial diversity. By contrast, higher soil... |
| Tipo: Journal Article |
Palavras-chave: Climate; Fertilizer; Manitoba; Plant Breeders’ Rights; Production risk; Wheat; Yield; Agribusiness; Crop Production/Industries; Farm Management; Land Economics/Use; Productivity Analysis; Risk and Uncertainty; O18; Q16. |
| Ano: 2009 |
URL: http://purl.umn.edu/56649 |
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| Registros recuperados: 293 | |
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