The Secret Global Sewer System

From the creator

Thanks to the University of Minnesota for sponsoring this video! http://twin-cities.umn.edu/ Ditches and drain pipes help crops survive but can negatively impact the broader landscape. Thanks also to our Patreon patrons https://www.patreon.com/MinuteEarth and our YouTube members. __________________________________________ To learn more, start your googling with these keywords: Waterlog - to saturate (a field) with water; a problem for most crops Drainage - the removal of liquid (water) from an area Ditch - a narrow channel dug in the ground, typically used for drainage alongside a road or the edge of a field Drain tile - a pipe buried (beneath a field) for drainage. Originally made of ceramic tiles, now typically of corrugated plastic Precision agriculture - putting corn seed + small dose of fertilizer/pesticides in hole in ground Controlled drainage - the use of a water control structure to raise the depth of a drain tile outlet to hold water in the field when drainage isn't needed Wood chip bioreactor - an underground trench filled with wood chips that provide carbon for bacteria that denitrify the water flowing through it Saturated buffer - a strip on the edge of a field filled with plants & bacteria that can remove some nitrogen from the water flowing onto it from drain tiles Denitrification - the removal of nitrogen from a substance (soil, air, or water) by chemical reduction, typically via bacteria Wetland - an area of land where water covers the soil year-round or a

Published 2019-09-04 · Watch on YouTube ↗
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