Mulch is something that is applied to the soil surface. It can be organic (pine straw, bark, wood chips, leaves) or inorganic (black plastic, landscape fabric, synthetic pine straw, gravel). Its ...

In Iowa they call it “black gold” – a fertile blanket ... showed that in the 50 years from 1959, soil structure and levels of organic matter had degraded while acidity had increased.

Looking at the history of Wisconsin, Huang said the impact of being able to model the changes in soil organic carbon for farmers could be enormous. Wisconsin is one of the few places on Earth where ...