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Thinning level effects on growth and wood quality of Pinus taeda L. stands in Southern Brazil

concluded 05/2014

Abstract

Pinus species were introduced in Brazil in the mid-20th century. However, commercial planting started only in the 1970ies. At that moment, little was known about silviculture practices and the perspective of timber production was to supply the pulp and paper industry. Although mass production still plays an important role in Brazil, there is an increasing need for sawn timber, and even high quality timber is demanded. Currently, pine plantations cover 16,000 km². With the study it is aimed to evaluate the growth of 30-years-old Pinus taeda stands submitted to selective thinnings and with the goal of producing timber for multiple uses. Although widely adopted in Central Europe, selective thinning procedure is still unknown by Brazilian silviculturists, in spite of its high potential in improving individual tree growth. Stand development and yield, wood quality, industrial yield and the financial performance of different scenarios are being evaluated. Preliminary results show a remarkable growth response of individual trees to early and heavy release from competition.

 

Supervisors: Prof. Dr. Jürgen Huss
Prof   Prof. Dr. Jürgen Bauhus
Prof. Dr. Antonio Higa (Bundesuniversität Paraná, Brasilien)
Researcher: Mario Dobner, Jr.
Funding: Scholarship (CAPES/DAAD)
Duartion: 03/2011-05/2014
Partners: Prof. Dr. Mario Tomazello Filho (ESALQ, Universität São Paulo, Brasilien)

 

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