It was created around 1929 by the artist Adolfo López-Durán, who later became a professor at the Madrid School of Architecture. The ceramics were painted and fired at the Valencian tile house of Ramón Costello.
‘Nitrato’ is an important organic fertiliser for assisting the growth of crops. It consists of nitrates from natural rock deposits found in the Atacama Desert in Northern Chile. The Atacama is extremely dry and is able to readily extract minerals from the air and sea. It is a natural non synthetic plant fertiliser containing 15% nitrate nitrogen and 2% potassium. Chilean Nitrate was imported to Europe in the 19th century, to enrich farm soil that had become nitrogen depleted. Thus it nourished and gave strength to plants, when they faced adverse environmental growing conditions. Which remind us, that healthy plants build healthy people. This statement is as true today, as it was then. So this work of art is not only a beautiful example of artistic advertising, but it also sends out a healthy message.