2 resultados para TERNEROS - ENFERMEDADES - DIAGNÓSTICO - MAGDALENA MEDIO
em Repositorio Académico de la Universidad Nacional de Costa Rica
Resumo:
Resumen La historia de los cultivos tropicales en la segunda mitad del siglo XX, es en gran parte, una historia de innovación. Un análisis de esa historia de innovación nos permite vislumbrar la historia ambiental de esos cultivos. Mucha de la innovación de esa época, se hizo para controlar una ola de enfermedades y plagas vegetales sin precedentes. Recuperar la historia de esas enfermedades, nos permitirá, al mismo tiempo, comprender el aumento de la fragilidad ecológica de los principales cultivos en América Central. Este artículo analiza justamente esa problemática a partir del enfoque particular de la historia de la roya del cafeto -Hemileia vastatrix- en América Central, con énfasis en Costa Rica. Abstract The history of tropical crops in the second half of the twentieth century is, in large part, a history of innovation. An analysis of this history of innovation allows us to glimpse the environmental history of these crops. Much of the innovation in this period was done to counter an unprecedented wave of crop diseases and pests. Recovering the history of these diseases, in turn, allows us to understand the increasingly fragile ecology of the main crops in Central America. This article analyzes these themes through a history of the coffee rust - Hemileia vastatrix- in Central America, with particular emphasis on Costa Rica.
Resumo:
The article explores the performance of rural teachers in Costa Rica and analyses the curricula taught in public universities. It also examines limitations and advantages of teaching in rural areas and the way teachers face the challenges imposed by this kind of context in terms of cultural, economical and social particularities. Finally, based on the information collected in this investigation, a series of contents are presented in order to enrich the curricula of teacher training universities and to offer to their students, future teachers, the necessary tools to work in the rural area.