Irrigatie: Versjèl tösje versies

't Geïrrigeerdj areaal besleitj weltwied óngevieër 16% van 't totaal landjboewareaal, meh de gewasopbrings is róndj de 40% vanne ganse opbrings<ref>Bruce Sundquist (2007). ''Chapter 1- Irrigation overview''. In: The earth's carrying capacity, Some related reviews and analysis. [http://home.windstream.net/bsundquist1/ir1.html]</ref>.