Growth of pruned eucalypt clone in an agroforestry system in southeastern Brazil

Fontan, Ivan C. I.; Reis, Geraldo Gonçalves dos; Reis, Maria G. F.; Leite, Hélio Garcia; Monte, Marco Antônio; Ramos, Diego Correa; Souza, Felippe Coelho de

doi:10.1007/s10457-011-9432-1

Cited by 21 publications

(13 citation statements)

References 44 publications

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“…Esta técnica silvicultural envolve a remoção de galhos preferencialmente vivos com vistas à produção de madeira serrada limpa livre de nós, aumentando assim seu valor agregado . Tais estudos vêm demonstrando que a influência da retirada de galhos sobre o crescimento das plantas depende da proporção da área foliar removida e da capacidade de recomposição da copa das plantas, fatores fortemente influenciados pelo genótipo (aspectos morfológicos e fisiológicos), capacidade produtiva do sítio e pelo espaçamento e arranjo espacial do plantio (MONTE et al, 2009;FONTAN et al, 2011;TAIZ & ZEIGER, 2013;RAMOS et al, 2014).…”

Section: Resultsunclassified

Efeito Da Remoção De Ramos Laterais (“Toalete”) Sobre O Crescimento Inicial De Mudas Clonais De Eucalipto Em Campo

Fontan¹,

Lima²

2017

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Section: Resultsunclassified

Efeito Da Remoção De Ramos Laterais (“Toalete”) Sobre O Crescimento Inicial De Mudas Clonais De Eucalipto Em Campo

Fontan¹,

Lima²

2017

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“…For instance, Pinkard (2002) found that 20% leaf area removal of pre-canopy closure Eucalyptus nitens trees caused stem growth reduction. Fontan et al (2011) reported diameter growth reduction for a Eucalyptus camaldulensis × E. grandis clone established in 9.5 × 4.0 m spacing when pruning all trees of the stand, removing 33% of live crown height plus removal of some thick branches above this height in three lifts. To avoid growth reduction in these stands, the aforementioned authors recommended pruning interventions removing 33% of live crown height plus removal of some thick branches above this height in four lifts (beginning at age 9 months with 6 month intervals) only for trees selected for final harvest (60% of the stand).…”

Section: Discussionmentioning

confidence: 99%

Pruning of Eucalyptus grandis x Eucalyptus urophylla planted at low density in Southeastern Brazil

Filho

Carvalho

Ribeiro

et al. 2016

Afr. J. Agric. Res.

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Tree pruning is a silvicultural operation that aims to improve wood quality, but care must be taken regarding the timing and height of the lift to ensure that tree growth is not negatively affected. The objective of this work was to evaluate the effects of different pruning heights on height and diameter growth of Eucalyptus grandis × Eucalyptus urophylla. The experiment was done in a one year old stand which was planted at 9 × 3 m spacing, managed under a silvopastoral regime, and located in João Pinheiro, Minas Gerais, Brazil. Pruning treatments removed branches carrying the lower green crown as follows: 0% (unpruned), 20, 40, and 60% of total tree height. Diameter at breast height (DBH at 1.3 m) and total height of all trees in the sample plots were measured prior to pruning and one year after pruning. Compared to the unpruned control, pruning significantly reduced mean DBH and total height in the 40 and 60% treatments but not in the 20% treatment. Thus, it was concluded that when pruning operation is done before canopy closure not more than 20% of lower green crow should be removed to avoid tree growth reduction.

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“…Pruning is necessary to obtain wood without knots (PIRES, 2000;MONTAGU et al, 2003;POLLI et al, 2006). Most Brazilian studies aimed to identify the best way of pruning without reduction in the stand productivity (PIRES, 2000;FINGER et al, 2001;PIRES et al, 2002;VALE et al, 2002;ALMEIDA, 2003;LIMA, 2003;PULROLNIK et al, 2005;CHAVES, 2005;POLLI et al, 2006;STOCKS, 2007;MONTE et al, 2009;FONTAN et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Growth reduction may occur with high removal of photosynthetic area (PINKARD; BEADLE, 1998;PIRES, 2000) and can be avoided with the proper definition of the timing and intensity of pruning, and the selection of genotype with high rates of canopy recovery after pruning (ALMEIDA, 2003;LIMA, 2003;PULRONILK et al, 2005;MONTE et al, 2009;FONTAN et al, 2011). Proper forest management is important to obtain high number of plants in larger diameter classes so that the proportion of clear wood (free of knots) is increased and yield sawing is the maximum possible.…”

Section: Introductionmentioning

confidence: 99%

Thinning effect on plant growth of pruned eucalypt clone

Ramos¹,

Reis

et al. 2014

Rev. Árvore

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-A pruned stand of eucalypt clone underwent five thinning treatments with the removal of different proportion of the planted trees, at different ages: a) 0% -unthinned, b) 35% at 55 months, c) 35% at 81 months, d) 70% at 81 months, removing sprouts in the thinned plant stumps and, e) 70% at 81 months, without coppice sprouts removal. By the age of 141 months, the Weibull distribution showed higher number of trees in the smallest diameter classes for the unthinned treatment. The 70% thinning, with thinned coppice sprouts removal, presented higher number of individuals in the largest diameter classes. Height and yield were the smallest with the removal of 70% of the trees at 81 months, maintaining coppice sprouts. The afterthinning periodic annual increment was greater by thinning 35% of the trees at 55 months resulting in greater number of trees in the largest diameter classes as compared to the other treatments. Yield was higher for the unthinned treatment. The results of this study indicated that thinning 70% of the trees at the age of 81 months, with coppice sprout removal, could be recommended to obtain trees of larger diameter for multiproduct.Keywords: Forest yield; Diameter distribution; Eucalypt clone. EFEITO DO DESBASTE SOBRE O CRESCIMENTO DE PLANTAS DE CLONE DE EUCALIPTO DESRAMADO RESUMO -Um povoamento desramado de eucalipto foi submetido a cinco tratamentos de desbaste, com remoção de diferentes proporções das árvores plantadas e idades: a) 0% não desbastado, b) 35% aos 55 meses, c) 35% aos 81 meses, d) 70% aos 81 meses, removendo a brotação nas cepas desbastadas e e)

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Growth of pruned eucalypt clone in an agroforestry system in southeastern Brazil

Abstract: This study aimed to identify pruning intensity and frequency that can be applied to eucalypt without imposing growth reduction, in an agroforestry system in Brazil (17°36' S and 46°42'

Cited by 21 publications

References 44 publications

Efeito Da Remoção De Ramos Laterais (“Toalete”) Sobre O Crescimento Inicial De Mudas Clonais De Eucalipto Em Campo

Efeito Da Remoção De Ramos Laterais (“Toalete”) Sobre O Crescimento Inicial De Mudas Clonais De Eucalipto Em Campo

Pruning of Eucalyptus grandis x Eucalyptus urophylla planted at low density in Southeastern Brazil

Thinning effect on plant growth of pruned eucalypt clone

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