An approach for using general soil physical condition–root growth relationships to predict seedling growth response to site preparation tillage in loblolly pine plantations

Morris, Lawrence A.; Ludovici, Kim H.; Torreano, Scott J.; Carter, E.A.; Lincoln, M. Chad; Will, Rodney E.

doi:10.1016/j.foreco.2006.02.031

Cited by 12 publications

(11 citation statements)

References 27 publications

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“…At our site, disk harrowing increased early tree growth by about 25% (total biomass). Similar increases in productivity after mechanical site preparation have often been reported (Fox, 2000;Morris et al, 2006;Jandl et al, 2007), and were explained by either improved soil physical conditions (porosity, lower soil penetration resistance allowing better root growth), lower competition (weed control), or improved nutrient and water availability (Collet et al, 1996;Morris et al, 2006;Lincoln et al, 2007). In our experiment, improved soil physical conditions were probably the main factor explaining the increase in tree growth, since competing vegetation was totally eliminated in both treatments (directed herbicide spraying throughout the year), and nutrient availability was probably not a limiting factor (trees were fertilised) nor a discriminative factor, since soil CO 2 efflux (and presumably nutrient release from residue and SOM decomposition) was not different between the two treatments ( Fig.…”

Section: Effects Of Disk Harrowing On Early Tree Growthsupporting

confidence: 79%

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Soil CO2 effluxes, soil carbon balance, and early tree growth following savannah afforestation in Congo: Comparison of two site preparation treatments

Nouvellon

Epron

Kinana

et al. 2008

Forest Ecology and Management

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Section: Effects Of Disk Harrowing On Early Tree Growthsupporting

confidence: 79%

“…We used agerelated equations that have been established for this Eucalyptus clone by Saint-André et al (2005). We assumed that site preparation had no significant effect on the allometric relationships between tree size and the biomass of the various tree compartments, which is a reasonable assumption following Morris et al (2006).…”

Section: Soil Co 2 Effluxmentioning

confidence: 99%

Soil CO2 effluxes, soil carbon balance, and early tree growth following savannah afforestation in Congo: Comparison of two site preparation treatments

Nouvellon

Epron

Kinana

et al. 2008

Forest Ecology and Management

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“…The negative correlation between the CAG of pine and downy birch and soil scarification intensity found in our study may be caused by stress. Young seedlings may experience stress and limited growth of roots due to poor root connection with water [66]. This is similar to stress reported for newly planted seedlings [67], which is shown to limit early growth [68].…”

Section: Current Annual Growthsupporting

confidence: 63%

Effects of Increased Soil Scarification Intensity on Natural Regeneration of Scots Pine Pinus sylvestris L. and Birch Betula spp. L.

Saursaunet

Mathisen

Skarpe

2018

Forests

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Achieving an optimal density of trees is essential for the final yield in commercial forestry. Soil scarification is commonly used in Scandinavia in order to produce successful regenerations of Scots pine (Pinus sylvestris L.), especially in areas with risk of browsing damage by moose (Alces alces L.). The research presented in this paper provides knowledge on how increased intensity of soil scarification affects the regeneration of pine and birch (Betula spp. L.). A total of 67 stands were treated with different intensities of soil scarification. Tree seedling density and current annual growth (CAG) were measured one to five years after scarification. Results showed that the density of pine and birch seedlings increased with soil scarification intensity. CAG of pine decreased with scarification intensity. CAG of downy birch decreased with proportion of exposed mineral soil, but increased with proportion of exposed humus. The effect of soil scarification intensity on CAG of both tree species was relatively weak. Results suggest that although increased scarification intensity had a positive effect on seedling establishment, the effect on early growth may be unfavourable. Further research is needed in order to evaluate the long-term effects of soil scarification intensity on growth.

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“…After the first growing season, pine seedlings varied in the total length of their root system, and in their root:shoot ratio. Tree seedling root growth is influenced by such physical factors of soil as: temperature, water, me-chanical resistance, and aeration (Sayer et al 2005;Morris et al 2006). The root growth is positively correlated with soil temperature (Lopushinsky and Max 1990) and negatively with water stress (Sayer et al 2005).…”

Section: Discussionmentioning

confidence: 99%

Effects of different methods of site preparation on natural regeneration of Pinus sylvestris in Eastern Poland

Aleksandrowicz-Trzcińska¹,

Drozdowski²,

Brzeziecki³

et al. 2013

Dendrobiology

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Mechanical site preparation (MSP) is commonly used to enable forest regeneration of clear-cuts. Less intense methods may be more suitable from an environmental point of view, but such a method can result in the lack of natural regeneration. We compare the influence of three MSP methods on natural regeneration of Scots pine. The methods differ in their degree of soil disturbance. The effects of MSP by forest plough (FP), active plough (AP), and forest cutter (FC) on density, quality, and biometric parameters of one-year old seedlings were determined. The highest density of seedlings was obtained in the FP treatment (188,000 seedlings ha ). The best quality seedlings were found in the FC variant, and the worst -in the FP treatment. Most biometric parameters of seedlings did not differ by MSP method, except for the root length and root:shoot ratio. By the end of growing season, in the FP treatment, 1-year old seedlings formed a top bud more than twice as often as the seedlings from the AP and FC treatments. The FP method led to the best Scots pine natural regeneration. The results obtained in the FC variant were not as good as in the FP method, though they were still acceptable from the silvicultural point of view. The FC method was the least intensive method of site preparation, yet it is considered the most appropriate from the environmental (soil protection) point of view.

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An approach for using general soil physical condition–root growth relationships to predict seedling growth response to site preparation tillage in loblolly pine plantations

Cited by 12 publications

References 27 publications

Soil CO2 effluxes, soil carbon balance, and early tree growth following savannah afforestation in Congo: Comparison of two site preparation treatments

Soil CO2 effluxes, soil carbon balance, and early tree growth following savannah afforestation in Congo: Comparison of two site preparation treatments

Effects of Increased Soil Scarification Intensity on Natural Regeneration of Scots Pine Pinus sylvestris L. and Birch Betula spp. L.

Effects of different methods of site preparation on natural regeneration of Pinus sylvestris in Eastern Poland

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