Show hardwoods improve pines piner quality of lumber in second growth southern pine stands Is tm tin proved by the presence of a sub ul stant lat mixture of 0 second growth of hardwood tar of the same name age recent united beatea forest felc ler ric studies show the shorter eli orter broad leaved trees help materially in shading hading out and causing natural pruning of the lower branches of the lines promoting earlier forma tion of clear lumber in the growing pine trunks best result results were faund where alit re the lunda included Inc laded it approximately P 1 20 0 per cent of well 3 tributes tri buted hardwoods baril wooda |