A bit of history...

Since the first centuries of Middle Ages, from Comunal Age to Renaissance, the provinces of Lombardy valleys expanded and improved the irrigation placements. With thw improvement of agrarian equipements and of coltural practices, it was possible to arrive at the employment and at the developement of the spring-like cereals' sowing, of flooded grasslands and of the water meadows that allowed a great increase of the production of forage for cattle breedings. So began thebinomial agricolure-breeding that had being brought Lombardy agrarian economy to distinguish in the whole Europe.
At the end of '400 were finished the main works for the Lombardy irrigation system, the so called Naviglio Grande, Naviglio of Bereguardo and Naviglio Martesana.
In this period the lands of the low Po Valley were represented as a land of regular flooded grasslands and water meadows that, in some areas, covered it up to 85% of its surface.
Parabigo, that on the other hand finds itself in the high dry valley, was characterised by meadows only near watered areas along olona. From 1891, Villoresi Canal, that uses Ticino water, allowed to water a big quantity of lands: so it was possible to bring the characteristics of low valley narrated by Virgil in the area's lands.