Shortleaf pine : its economic importance and forest management . # years 6 years ^7 years. F-13222A Fiq. 1.—Encroachment of Shortleaf on Successively Abandoned Portions ofCotton Field. Stands of Six Different Ages. g^juagy. mKk ? - ^^^^^^M L •:«^ ;v : ||t mm¥<^.^-\ v^im WHmm *, . It; * v ? Jw- . F-20687A Fig. 2.—Very Dense Stand of 9-Year-Old Seedlings, 42,000 Trees Per Close Relation Between Density and Development. SHORTLEAF ENCROACHING UPON FIELDS UNDER CULTIVATION. Bui. 308, U. S. Dept. of Agriculture. Plate VIII

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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1915