Today, March 22nd, we celebrate World Water Day.
World Water Day has been observed on this day since 1993 when the United Nations General Assembly declared March 22nd as ‘World Day for Water’.
This day focuses on advocating the sustainable management of freshwater resources and also pays attention to the importance of universal access to clean water, sanitation and hygiene facilities in developing countries.
Water and water management play an integral part of any agricultural activity, especially so in the case of a farm managed on organic and biodynamic terms of natural farming as at Vineyard Son Alegre in the municipality of Santanyí in the southeast of the island of Mallorca. At Son Alegre, we cultivate vines, olive trees, carob trees and Xeixa, an ancient species of wheat (Triticum aestivum) indigenous to Mallorca, which used to be grown all over the island hundreds of years ago but sadly has virtually disappeared and is only slowly being reintroduced now by us and a few like-minded young farmers.
During the first three months of this year, we had plenty of rainfall here on our finca with almost 250 litres of rain on our land, plenty for us and our needs but not half as much as in other parts of the island where massive downpours were said to have fallen. That’s almost half the amount in less than three months of what we had last year over the span of 12 months.
During the twelve months of 2017, we measured a total of 460 l of rainfall per square metre on our land. With an extension of 512,500 m2 (51 hectares), we would have benefitted from about 235,000,000 litres of rain. A large portion of that water, roughly one third, is absorbed by our plants and vegetation, as well as consumed by our animals, by insects, birds, ants and other creepy crawlers. An estimated further one third of all that rainwater evaporates in wind and sunshine. The remaining one third filters down into our subterranean groundwater aquifers which we can then access whenever our vines need irrigation during the high temperatures of summer. We resort to irrigation very little; last year we supplied water to our vines on only four occasions with an amount of roughly 200 to 250 l per plant in total, using some 3,500,000 l in total.
An old proverb says In vino veritas, a Latin phrase meaning ‘In wine there is truth’. We would rather claim In aqua veritas.