Clear water in wells and streams is additional proof that topsoil captures silt particles. If silt stayed in groundwater as ...
The holes in the perforated pipe should aim down ... can rest on the undisturbed soil that the footing rests on. The drain tile pipe doesn’t need to be sloped like a plumbing drain pipe.
Robots with nitrate sensors, being developed by Iowa State and Michigan State university researchers, could help farmers ...