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Master's Dissertation
DOI
https://doi.org/10.11606/D.11.1973.tde-20240301-154430
Document
Author
Full name
Hilton Thadeu Zarate do Couto
Institute/School/College
Date of Defense
Published
Piracicaba, 1973
Supervisor
Title in Portuguese
Condução da brotação de Eucalyptus saligna Smith, com 1, 2 e 3 brotos por touça.
Keywords in Portuguese
BROTAÇÃO
EUCALIPTO
Abstract in Portuguese
O presente trabalho foi desenvolvido com o objetivo de estudar a condução de touças de Eucalytus saligna Sm. conservando 1, 2 e 3 brotos por touça (tratamentos A, B e C respectivamente). O ensaio foi instalado na região de Mogi Guaçu, Estado de São Paulo e os seguintes dados foram levantados aos 5 anos de idade: sobrevivência de touças, volume de lenha fina e de madeira empilhada, volume real de madeira de cada touça, altura média e diâmetro médio à altura do peito (DAP), dos brotos. Com base na discussão dos resultados pode-se chegar às seguintes conclusões: (1) A sobrevivência das touças foi afetada pelo número de brotos. (2) A condução a 2 brotos por touça produziu maior volume de madeira empilhada. (3) O volume de lenha fina foi maior no tratamento C, seguido de B e menor no tratamento A. (4) O volume total de madeira e lenha fina apresentou-se maior nos tratamentos B e C em relação ao tratamento A. (5) Os brotos de maior diâmetro médio à altura do peito ocorreram no tratamento A seguido do B e do C. (6) A altura média das brotações não sofreu influência do número de brotos. (7) Os volumes reais de madeira útil com casca ou sem casca foram maiores nos tratamentos B e C em relação ao tratamento A. (8) Embora a diferença entre as produtividades dos tratamentos B e C seja pequena, pode-se recomendar o tratamento B por apresentar maiores diâmetros nas peças de madeira.
Abstract in English
This paper was developed to study 3 types of sprout management of Eucalyptus saligna Sm., i.e., with 1, 2 and 3 sprouts by stump (treatments A, B and C respectively). The assay was established in the region of Mogi Guaçu, State of São Paulo and the following data were collected at 5 years old: stump survival, heaped up firewood volume, heaped up wood volume, wood volume of each stump, average height and average diameter at breast height. The data were statistically analysed. Based on discussions we could draw the following conclusions: (1) Stump survival did not receive any influence from the treatments. (2) The volume of heaped wood was bigger in the treatment with 2 sprouts by stump, although there was not any difference between treatments B and C. (3) The volume of heaped firewood with bark showed a better yield in treatment C, followed by B and with a smaller yield in treatment A. (4) The heaped up firewood and wood together showed better yield in treatments B and C compared to treatment A. (5) The biggest average diameter was in treatment A followed by treatments B and C. (6) The average height of the sprouts did not receive any influence of the treatments. (7) The wood volume with and without bark, and with a minimum top diameter of 5 cm with bark, showed the biggest volumes in treatments B and C compared to treatment A. (8) Although the difference between the yields of treatments B and C was small, we could recommend treatment B because it showed the biggest diameter at breast height compared to treatment C.
 
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Publishing Date
2024-03-14
 
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