Dolly Sods once was covered with a dense ancient forest of red spruce and hemlock trees.

VOA: special.2009.07.20

He says a dense, competitive crop that quickly shades the soil will help suppress many weeds.

VOA: special.2009.05.26

He says a dense,competitive crop that quickly shades the soil will help suppress many weeds.

VOA: special.2010.08.10

Dense planting of a crop can also act as a natural control.

VOA: special.2009.05.26