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| Junod,Julio; Zagal,Erick; Sandoval,Marco; Venegas,Alejandro; Campos,Jorge; Radrigan,Rudi; Barra,Ricardo; Vidal,Gladys. |
| El presente estudio tiene por objetivo probar mediante ensayos supervisados la variabilidad de los residuos de clorpirifos (CHP) asociados a una metodología de muestreo validada en terreno, al aplicar el ingrediente activo (IA) en huerto de manzanos, con dos diferentes metodologías de aspersión y en épocas diferentes de desarrollo vegetativo. Se estudió la persistencia al aplicar 1,8 kg ha -1(Lorsban 50%WP®, Dow AgroScience, USA), mediante nebulizadora con bomba de espalda con motor (NBEM) y con nebulizadora de alto volumen (NAV). Se evaluó el modelo que representa el mejor ajuste de la declinación de los residuos a través de regresión no lineal. Los resultados muestran altos coeficientes de variación (CV) en ambos métodos de aplicación, NBEM (69%) y NAV... |
| Tipo: Journal article |
Palavras-chave: Pesticidas; Residuos; Degradación. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000300002 |
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| Campos,Jorge; Foster,William. |
| During the past thirty years the Chilean economy generally and agriculture specifically have grown considerably, raising both per capita GDP and observed real wages of salaried workers. There has been, however, a concern about the country's persistent unequal distribution of income. Among the possible factors associated with income inequality is the relatively infrequent use of contracts in seasonal and occasional work, both strongly present in agriculture. Based on Chilean household surveys (CASEN) for 1996 and 2006, impacts of contracts and work relationships (permanent, seasonal, etc.) on salaries, and their possible contributions to inequality, were measured, accounting for schooling, ethnicity, work experience, geographic zones, and other variables... |
| Tipo: Journal article |
Palavras-chave: Agriculture; Labor; Gender; Income distribution; Inequality; Work contract; Work relationship. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100001 |
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