BANGOR, Maine, May 1 -- The U.S. Department of Agriculture's Natural Resources Conservation Service Maine office issued the following news release: * * * - Take stock of productive forest soils in your woodland this Spring * * * One often overlooked aspect of good stewardship is understanding the role that soil plays in forest productivity. The soil provides a foothold for roots, and supplements the trees with essential nutrients and water. The soil determines the species composition of the   more