Evolution of agricultural extension and information dissemination in Peru: An historical perspective focusing on potato-related pest control

摘要: Multiplicity and continual change characterize the Peruvian agricultural knowledge information system (AKIS), reflecting changes in sector as a whole. The evolution of these can be traced back to pre-Columbian era when relatively stable well-organized based on indigenous prevailed. During colonial (1532-1821) early Republican times (beginning 1821) several affecting contributed weakening systems. 20th century extension services provided by government variety private organizations began play an important role dissemination information, albeit erratic way. Since 1970s increased complexity with emergence non-governmental institutions. Today participation is limited there more number NGOs organizations. This diversity actors using different approaches has generated disarray owing lack coherent policies guide interaction among actors. paper uses case potato pest control-related illustrate local It differentiates control knowledge, chemical control, integrated management (IPM) explains how have influenced use three types AKIS. Currently, coexistence promoted used diverse usually unconnected sets individuals presents challenge requires inter-institutional action guided clear promote sustainable agriculture.