AgResearch Ltd (New Zealand's largest Crown Research Institute) believes that new technologies will allow New Zealand farmers to double their output by 2020, while simultaneously reducing greenhouse-gas emissions and other detrimental environmental impacts associated with farming practices. Rural New Zealand has affected the culture of New Zealand. "Country Calendar" is a factual television programme about farming methods and country life, and is watched by both rural and urban New Zealanders. The show first premièred on 6 March 1966, and is the country's longest-running locally-made television series. The gumboot, a waterproof boot commonly used by farmers and others, is a cultural icon with Taihape hosting an annual Gumboot Day. Fred Dagg, a comedy character created by John Clarke, was a stereotypical farmer wearing a black singlet, shorts and gumboots. Number 8 wire is used for fencing and has become part of the cultural lexicon. It is used for all manner of tasks and it describes the do it yourself mentality of New Zealanders.