<P> Crop areas were farmed in two highly diverse manners . Areas relying on non-irrigated cultivation (secano), which made up 85% of the entire crop area, depended solely on rainfall as a source of water . They included the humid regions of the north and the northwest, as well as vast arid zones that had not been irrigated . The much more productive regions devoted to irrigated cultivation (regadío) accounted for 3 million hectares in 1986, and the government hoped that this area would eventually double, as it already had doubled since 1950 . Particularly noteworthy was the development in Almería--one of the most arid and desolate provinces of Spain--of winter crops of various fruits and vegetables for export to Europe . </P> <P> Though only about 17% of Spain's cultivated land was irrigated, it was estimated to be the source of between 40--45% of the gross value of crop production and of 50% of the value of agricultural exports . More than half of the irrigated area was planted in corn, fruit trees, and vegetables . Other agricultural products that benefited from irrigation included grapes, cotton, sugar beets, potatoes, legumes, olive trees, mangos, strawberries, tomatoes, and fodder grasses . Depending on the nature of the crop, it was possible to harvest two successive crops in the same year on about 10% of the country's irrigated land . </P> <P> Citrus fruits, vegetables, cereal grains, olive oil, and wine--Spain's traditional agricultural products--continued to be important in the 1980s . In 1983 they represented 12%, 12%, 8%, 6%, and 4%, respectively, of the country's agricultural production . Because of the changed diet of an increasingly affluent population, there was a notable increase in the consumption of livestock, poultry, and dairy products . Meat production for domestic consumption became the single most important agricultural activity, accounting for 30% of all farm - related production in 1983 . Increased attention to livestock was the reason that Spain became a net importer of grains . Ideal growing conditions, combined with proximity to important north European markets, made citrus fruits Spain's leading export . Fresh vegetables and fruits produced through intensive irrigation farming also became important export commodities, as did sunflower seed oil that was produced to compete with the more expensive olive oils in oversupply throughout the Mediterranean countries of the European Community . </P> <P> The climate of Spain, its geographic location, popular coastlines, diverse landscapes, historical legacy, vibrant culture and excellent infrastructure, has made Spain's international tourist industry among the largest in the world . In the last five decades, international tourism in Spain has grown to become the second largest in the world in terms of spending, worth approximately 40 billion Euros or about 5% of GDP in 2006 . </P>

Name and describe one national event or spanish holiday