. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. 102 Caribbean Forester timum leads to a program of growing stock development through periodic improvement cuttings. Improvement cuttings for this pur- pose have been succesful elsewhere. Steb- bing (22), describing forestry in India, con- cluded that the crop can be immensely benefited by such operations, provided that they are carried out by officers who thoroughly understand the principles of thinning. Troup 25, p. lvi., also referring to Indian forestry, stated as follows: &q
. The Caribbean forester. Forests and forestry Caribbean Area Periodicals; Forests and forestry Tropics Periodicals. 102 Caribbean Forester timum leads to a program of growing stock development through periodic improvement cuttings. Improvement cuttings for this pur- pose have been succesful elsewhere. Steb- bing (22), describing forestry in India, con- cluded that the crop can be immensely benefited by such operations, provided that they are carried out by officers who thoroughly understand the principles of thinning. Troup 25, p. lvi., also referring to Indian forestry, stated as follows: "A provisional method of treat- ment, the main object of which is to utilize the available stock of mature and overmature trees of marketable species, while endeavoring to safeguard the fu- ture stock as far as possible, must con- tinue in force for many years to ; An improvement cutting in the extremely variable forest of the Luquillo Mountains will vary widely in its character from acre to acre. It should include, where necessary, salvage, harvest, thinning, liberation, and cleaning, the relative emphasis dependent upon stand conditions. The process of forest improvement takes time. The optimum stand cannot be attained in one cutting, because the desired trees are usually not present. Optimum stand densi- ty can be machieved immediately, however wherever present density is excessive. This should be a prime objective of first cuttings regardless of the degree to which structure and composition can be improved. Thinning of dense stands to only 60 square feet of ba- sal area per acre has not perceptably acce- lerated erosion, even on loose quartz soils. Betterment of structure and composition can be continued in subsequent cuts. If the poor- est trees are removed, increment takes place on the best trees available (see Fig. 2). Nothing more can be asked during this tran- sition Fig. 2.—Young pole stand in tabonuco type forest immediately after selective cu
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