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Postthinning growth and yield of row thinned and selectively thinned loblolly and slash pine plantations

Postthinning growth and yield of row thinned and selectively thinned loblolly and slash pine plantations

Canadian Journal of Forest Research 19(2): 247-256

This study compared growth responses in planted loblolly pine (Pinus taeda L.) and slash pine (P. elliottii Engelm.) stands thinned by using three row-felling methods and at the same density levels, three selective felling methods. The study plots were in six plantations, aged 15-22 years, located in central Louisiana. Growth was measured 5 and 10 years after plot installation. Site index varied from 19.5 to 31.7 m (base age 50) and initial planting densities ranged from 1993 to 2989 trees/ha. Study results show there will likely be less diameter increment and less net basal area and cubic-metre volume per unit area growth and yield, and the growth will be in smaller-sized trees, if row thinning is used rather than selective thinning from below. These differences will probably be greater in slash pine plantations than in loblolly pine plantations.

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Accession: 007672658

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DOI: 10.1139/x89-035

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