Adverse Genetic Correlations and Impacts of Silviculture Involving Wood Properties: Analysis of Issues for Radiata Pine

Burdon, R. D.; Moore, John R.

doi:10.3390/f9060308

Cited by 12 publications

(4 citation statements)

References 59 publications

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“…Silvicultural activities like nursery systems, site preparation (which may include cultivation, drainage, and control of competing vegetation before and soon after planting), fertiliser use, control of growing space, tending and choice of harvest age, all affect wood properties (Burdon & Moore 2018;Lasserre et al 2004;.…”

Section: Fibre Attributes That Determine Wood Quality For Pulpmentioning

confidence: 99%

Peeler core and slabwood fibre properties for Pinus radiata D.Don pulp production

Elissetche,

Apiolaza,

Alzamora

et al. 2024

NZJFS

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Background: Pulp production based on Pinus radiata D.Don is constantly improving the value recovery of logs. One example is using the peeler cores and slabwood derived from sawing and peeling processes to produce pulp. However, these two raw materials have not been characterised for their fibre properties. Methods: We report on four wood fibre quality attributes derived from peeler cores and slabwood, directly influencing pulp quality and pulping process: fibre length (mm), fibre width (µm), fines content (%), and coarseness (µg/m). This pilot study sampled two P. radiata stands grown on different sites and early silvicultural regimes in the Araucanía Region of Chile. Analysis of wood fibre consisted of three trees per stand, and six discs per tree: two at the bottom, two at breast height (1.3 m), and the last two at 5.23 m height. Results: The trajectory of mean annual increment in diameter at breast height (MAI) and periodic annual increment in diameter at breast height (PAI) for trees in the two stands aligned with their respective site qualities and silvicultural regimes. In Stand 1, with a site index of 36, and Stand 2, with a site index of 31, the average proportions of juvenile wood (measured at 1.3 m) were 50% and 53%, respectively. Thus, despite weed control and fertiliser application in Stand 1, there was no increase observed in the proportion of juvenile wood. There were significant differences in fibre properties between peeler core and slabwood, and these differences were present across the range of tree heights and diameters (p<0.05). While there were no statistically significant differences among disc positions, significant distinctions emerged between stands and wood types. The interaction between these factors was also found to be statistically significant (p<0.05). Conclusions: Our study suggests that adding these two materials into the mix for producing pulp would have positive implications due to pulp from peeler core is more suitable for printing and writing grades and addition of mature wood from slabwood, could improve strength properties of paper manufacture. However, it is necessary to test the optimal proportion for the final mix.

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Section: Fibre Attributes That Determine Wood Quality For Pulpmentioning

confidence: 99%

Peeler core and slabwood fibre properties for Pinus radiata D.Don pulp production

Elissetche,

Apiolaza,

Alzamora

et al. 2024

NZJFS

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“…The importance of planted forests to meet global needs for wood and provide various environmental services has been well documented. In this context, tree breeding and silvicultural applications were categorized as the major disciplines to increase the productivity of plantations (Burdon and Moore 2018). They underlined that tree breeding covered selective breeding, delivery systems for genetic gain, arrangement for the deployment of improved breeds or clones to site and silvicultural regimes, whereas silviculture involved to raise or keep site productivity using fertilizer and controlling vegetation competition, pests and disease, to safe stocking control for using of site potential and growing in target trees, and to enhance wood quality by handling of stocking.…”

Section: The Combination Of Silviculture and Tree Breeding For Planted Forestsmentioning

confidence: 99%

Silviculture and tree breeding for planted forests

Alan

2020

Eurasian Journal of Forest Science

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One of the main issues facing the forestry sector is balancing the demand for forest products and the sustainable management of forest ecosystems. Efficient plantation management and intensive silviculture practices are needed to grow timber in forest tree plantations. Due to the tangible impact on wood production, the plantations area in the world has constantly increased during the last several decades. The annual increase of plantation was 3.3 million ha in the period of 1990-2015. Over the past decades, tree improvement programs have progressed to the second, third, and fourth cycles to provide genetically improved planting stock to plantations. Substantial genetic gain has been realized from major tree improvement programs around the world. The effect of tree breeding on wood and fiber production per unit area has further increased by the modern plantation silvicultural applications, such as soil preparation, fertilization and thinning. Combination of tree breeding and silvicultural applications shortened the rotation ages of plantations, increasing the wood and fiber output per unit time. In this study, the importance of silvicultural treatments and plantation management has been reviewed and how such practices could enhance sustainable management of natural forests.

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“…In comparison with mature wood, the density and mechanical properties of juvenile wood are lower, as the cell walls are thin and the proportion of latewood is small [10,24,29,31,[36][37][38]. The microfibril angle in the S 2 layer of the secondary wall is high, which increases the longitudinal shrinkage and reduces stiffness [10,39].…”

Section: Introductionmentioning

confidence: 99%

Modulus of Elasticity and Bending Strength of Scots Pine (Pinus sylvestris L.) Wood from Commercial Thinnings

Stöd,

Marttila,

Tomppo

et al. 2024

Forests

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The static bending properties of Scots pine (Pinus sylvestris L.) clear wood were studied using a material collected from commercial thinning forests in eastern Finland. In Myrtillus type, the modulus of elasticity and bending strength of the first thinning wood were 7.8 GPa and 66.0 MPa, respectively, whereas for more mature wood from the second thinnings, the modulus of elasticity and bending strength were 10.0 GPa and 80.3 MPa. The results were compared with final fellings, which resulted in the modulus of elasticity of 10.1 GPa and bending strength of 81.8 MPa. The bending properties of the first thinning material were low, and thus they did not indicate any potential for applications requiring high strength or stiffness and material homogeneity. On the contrary, the properties of Scots pine wood from the second commercial thinnings may be comparable with or sometimes even better than those of the final-felling wood. The results can be utilised in wood marketing, procurement, sorting, allocation to different industries and end-uses, as well as in wood processing, product sales, and branding.

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Adverse Genetic Correlations and Impacts of Silviculture Involving Wood Properties: Analysis of Issues for Radiata Pine

Cited by 12 publications

References 59 publications

Peeler core and slabwood fibre properties for Pinus radiata D.Don pulp production

Peeler core and slabwood fibre properties for Pinus radiata D.Don pulp production

Silviculture and tree breeding for planted forests

Modulus of Elasticity and Bending Strength of Scots Pine (Pinus sylvestris L.) Wood from Commercial Thinnings

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