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A video is worth 1000 words August 9th, 2020 by

A farmer learning video often does have the proverbial thousand words, but can technical information be shared through images alone? A recent study set out to see how much rice farmers in southern Benin would learn from a video if they couldn’t understand the words.

PhD candidate Lauréano Bede and colleagues created an experiment using a video about urea fertilizer. Over-use of this nitrogen fertilizer wastes farmers’ money, pollutes waterways, and contributes to greenhouse gases. The video shows how to cut urea use by two-thirds, by making large, “super-granules” of fertilizer and pressing them into the wet soil, where the rice plant can absorb it, instead of scattering the urea all over the surface.

In the study, six groups of farmers watched the super-granule video. In three villages, they watched the video in their own language, Adja. One of the villages saw the video once, another watched it twice, and another saw it three times. In comparison, another set of three villages also watched the video once, twice, or three times, but they had the disadvantage of seeing it in a language they didn’t understand: English.

As expected, villagers who only saw the video once learned more if they understood the soundtrack. But the difference narrowed after several screenings. Farmers who saw the video three times, without understanding the words, learned more than farmers who saw a single screening in their native Adja language. The more people watch a video, the more they learn, especially as community members discuss it among themselves, and share their observations, even if the language is foreign.

In this particular case, the super-granule video was expertly filmed to convey information to reduce the use of chemical fertilizer. Sloppy videos may not get their point across as well. A ten-minute video has about a thousand words. If the content and images are well-chosen, the video may be able to carry its messages, even without the words.

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Further reading

Lauréano Bede, Florent Okry & Simplice D. Vodouhe 2020 Video mediated rural learning: effects of images and languages on farmers’ learning in Benin Republic. Development in Practice, DOI: 10.1080/09614524.2020.1788508

Watch the video Watch or download Urea deep placement in Adja, English or one of 29 other languages.

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