Show r EXPERIMENTAL FORESTS Research Forestry Aids Nations Nation's Woodland Owners Grow Trees To meet the Increasing demand for timber Uncle Sams Sam's research foresters have come up with ways of 01 producing stronger trees and making them grow faster During 1950 the United States consumed approximately 39 billion board feet of lumber This represents seats more lumber than the nation used In any anyone one year since 1942 when 60 per cent of the lumber produced produced produced pro pro- went into military channels Lured by high prices and a continuing continuing contin contin- heavy demand too many woodland owners today are selling off ClU timber faster than the they are growing It It The small corps of research foresters working in the forest service of the U. U S. S department of agriculture have spent long years making studies of the growth harvesting har hat vesting and utilization of trees treel Work has bas been slow because it takes from 20 to 80 years for lor a tree to mature Now the foresters are corning coming comIng com corn ing up with some of the answers to the tho forest lorest owners' owners problem of bow how to make money and at the same tune time guarantee a future supply Caring for the forest Involves taking out diseased deformed and trees treel Research men have developed sprays which will kill insects and prevent the tho spread pread of 01 infections They have havo expert expert- fr f r h C oJ t In the above picture a forester lorester studies the annual growth rings which bich show shuw trees tree's rate of growth Tree Treo rings are measured before and after alter different forestry tices lice with poisons as a means of killing low-grade low species They have produced hybrids that resist certain diseases and that will grow crow twice as at fast tast as their parents As I another m means ans of oX getting trees to grow crow faster aster these foresters have tried thinning lightly or heavily at it different Intervals |