[1] Jennifer Norwood observed similar patterns in her work: A semiotic analysis of biotechnology and food safety photographs, and used these to discuses images associated with agriculture.
tend to associate agricultural images with day-to-day tasks, such as operating farm equipment or getting things ready to plan and objects such as muddy boots or farm tools.
[1] In another study, conducted by Leslie Edgar and Tracy Rutherford titled: A Semiotic Analysis of a Texas Cooperative Extension Marketing Packet, agricultural images of this marketing packet revealed five repeating themes that included diversity, relationships, messages portrayed, and stereotypes.
[3] According to a study titled: “The Stuff You Need Out Here”: A Semiotic Case Study Analysis of an Agricultural Company’s Advertisements by Emily B. Rhoades and Tracy Irani, agricultural images used in advertisements and in the media typically follow ideological views held by the American public.
Examples of indexical signs include thunder and footprints.