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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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| Labarta, Ricardo A.; Swinton, Scott M.; Black, J. Roy; Snapp, Siglinde; Leep, Richard. |
| In response to stagnating yields and mounting pest problems, Michigan potato growers are investigating ways to bring manure and cover crops back into potato production systems. The alternative systems bring benefits and costs for monetary net returns, the variability of net returns, and environmental impacts. This paper reviews the likely yield and biological system effects of alternative potato production systems that incorporate manure and cover crops. After briefly considering research designs for gathering experimental versus farm field data, it reviews four economic analysis methods for evaluating alternative systems. All methods are illustrated with examples. First, for evaluating comparative average profitability, it reviews a) enterprise... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Crop Production/Industries. |
| Ano: 2002 |
URL: http://purl.umn.edu/11677 |
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| Swinton, Scott M.; Labarta, Ricardo A.. |
| Este documento es un manual de estadística para economistas aplicados que usan el programa estadístico SPSS. Está diseñado para ser usado dentro de un taller de capacitación de una semana, y tiene como propósito familiarizar a profesionales de la investigación con procedimientos estadísticos básicos, necesarios para realizar análisis socioeconómicos a datos que provienen de encuestas. Este documento es una introducción para los usuarios en la creación y manipulación de las bases de datos, en la estadística exploratoria univariada y bivariada, en la prueba de hipótesis y en la regresión lineal y logística. El texto del documento se apoya en 19 cajas de texto que ilustran como cada procedimiento puede ser aplicado a un grupo de datos provenientes de una... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2003 |
URL: http://purl.umn.edu/11702 |
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| Swinton, Scott M.; Labarta, Ricardo A.. |
| This document is a primer in statistics for applied economists using the SPSS statistical software. It is intended for use with a one-week training workshop designed to acquaint research professionals with basic statistical procedures for analyzing socio-economic survey data. The document introduces users to database creation and manipulation, exploratory univariate and bivariate statistics, hypothesis testing, and linear and logit regression. The text is supported with 19 text boxes that illustrate how procedures can be applied to a farm survey dataset. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Research Methods/ Statistical Methods. |
| Ano: 2003 |
URL: http://purl.umn.edu/11747 |
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| Labarta, Ricardo A.; Swinton, Scott M.. |
| This paper analyzes how different characteristics of non-governmental organizations (NGOs) working as extension providers affect the delivery of agricultural technologies to farmers. Using farm level data from 436 Nicaraguan bean growers, we evaluate how the institutional characteristics of the NGOs that implement farmer field schools (FFS) affect their impacts on farmer choices of pest management inputs, their adoption of integrated pest management (IPM) and resulting net revenues and pesticide exposure from bean production. After controlling for endogeneity of participation in IPM training programs and for a clustered and stratified sample design, results reveal that institutional focus, expertise in IPM and the capacity of extension providers... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/25714 |
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