Sapwood thickness in Pinuscontorta var. latifolia

1992 ◽  
Vol 22 (12) ◽  
pp. 2004-2006 ◽  
Author(s):  
K.C. Yang ◽  
H.G. Murchison
Keyword(s):  
Growth Rate ◽  
Radial Growth ◽  
Growth Ring ◽  
Ground Level ◽  
Tree Age ◽  
Western Slope ◽  
Strongly Correlated ◽  
Radial Growth Rate ◽  
Growth Rings ◽  
Individual Trees

The vertical variation in the number of sapwood growth rings and sapwood thickness in Pinuscontorta Dougl. var. latifolia Engelm. was studied in relation to aspect, tree age, bole diameter, sapwood radial growth rate, and whole-xylem radial growth rate. Samples from 19 trees growing on the western slope of the Rocky Mountains near Kamloops, British Columbia, Canada, formed the data base. Sapwood width for individual trees ranged from 20 to 26 mm for both the east and west aspects, and was constant at various heights of the tree bole. Sapwood width for this species was found to be independent of age, diameter, sapwood radial growth rate, and whole-xylem radial growth rate. Sapwood consisted of 25 to 50 growth rings and decreased from the ground level upward to the tree crown. The number of sapwood growth rings was strongly correlated with age, diameter, and radial growth rates for both sapwood and the whole tree. No significant correlation existed between sapwood width and sapwood growth-ring counts.

Sapwood–heartwood proportion related to tree diameter, age, and growth rate in Piceaabies

1994 ◽  
Vol 24 (5) ◽  
pp. 1022-1028 ◽  
Author(s):  
Arne Sellin
Keyword(s):  
Growth Rate ◽  
Radial Growth ◽  
Age And Growth ◽  
Tree Age ◽  
Radial Growth Rate ◽  
Stem Base ◽  
Tree Diameter ◽  
Competition For Light ◽  
Transverse Area

The relationships of sapwood radial width and transverse area to tree diameter, age, and growth rate were investigated in Piceaabies (L.) Karst. A total of 125 trees growing with (suppressed trees) and without (dominant trees) competition for light were sampled. Both sapwood and heartwood amounts showed an increase with diameter at the stem base, with the heartwood portion increasing more rapidly. In young trees sapwood prevails both in terms of diameter and transverse area. After trees have reached a certain age, the width of the sapwood band remains more or less constant (on average 7.8 cm for dominant and 2.0 cm for suppressed trees), and the heartwood amount exceeds that of sapwood. The percentage of heartwood in suppressed trees is substantially greater than in dominant trees of the same age. Sapwood amount is closely correlated with the tree diameter, but not with age. Tree age controls the number of rings in sapwood, while the sapwood width depends on the tree's radial growth rate as well.

Vertical variation of sapwood thickness in Pinusbanksiana Lamb. and Larixlaricina (Du Roi) K. Koch

1985 ◽  
Vol 15 (5) ◽  
pp. 822-828 ◽  
Author(s):  
K. C. Yang ◽  
G. Hazenberg ◽  
G. E. Bradfield ◽  
J. R. Maze
Keyword(s):  
Growth Rate ◽  
Radial Growth ◽  
Growth Ring ◽  
Linear Measurement ◽  
Jack Pine ◽  
Constant Thickness ◽  
Radial Growth Rate ◽  
Vertical Variation ◽  
The North ◽  
Species Specific

Variation of sapwood thickness, in terms of a linear measurement (sapwood width) and a growth ring count (sapwood ring), in relation to age, height, aspect, and radial growth rate was studied in jack pine (Pinusbanksiana Lamb.) and tamarack (Larixlaricina (Du Roi) K. Koch). In general, jack pine has more sapwood rings and a greater sapwood width than tamarack. In jack pine, the number of sapwood rings steadily declined with increasing height, but in tamarack, the number of sapwood rings at first increased and then declined with increasing height. Sapwood width tended to show a species-specific constant thickness along the trunk, but both species exhibited a slight increase at the base and at the crown. The number of sapwood rings shows strong correlation with age, height, and sapwood radial growth rate, but not with sapwood width. In both species, the south aspect of the tree has wider sapwood and fewer sapwood rings than the north aspect. There is no statistical relationship between sapwood width and the number of sapwood rings.

 The Effect of a Pine Looper Moth Outbreak on the Radial Growth Rate of Pine

2020 ◽  
Vol 13 (7) ◽  
pp. 754-760
Author(s):  
V. G. Soukhovolsky ◽  
P. A. Krasnoperova ◽  
E. N. Pal’nikova ◽  
I. V. Sviderskaya ◽  
O. V. Tarasova
Keyword(s):  
Growth Rate ◽  
Radial Growth ◽  
Radial Growth Rate

GrowFruit: An IoT based Radial Growth Rate Monitoring Device for Fruit

2021 ◽  
pp. 1-1
Author(s):  
Anirbit Sengupta ◽  
Anwesha Mukherjee ◽  
Abhijit Das ◽  
Debashis De
Keyword(s):  
Growth Rate ◽  
Radial Growth ◽  
Monitoring Device ◽  
Radial Growth Rate

Continuous radial growth rate monitoring of horticultural crops using an optical mouse

2019 ◽  
Vol 297 ◽  
pp. 111526
Author(s):  
Subir Das ◽  
Shikha Nayak ◽  
Badal Chakraborty ◽  
Sabyasachi Mitra
Keyword(s):  
Growth Rate ◽  
Radial Growth ◽  
Radial Growth Rate ◽  
Horticultural Crops ◽  
Optical Mouse

Average radial growth rate and chlamydospore production of Ceratocystis minor, Ceratocystis minor var. barrasii, and SJB 122 in culture

1989 ◽  
Vol 67 (12) ◽  
pp. 3498-3505 ◽  
Author(s):  
David S. Goldhammer ◽  
Frederick M. Stephen ◽  
Timothy D. Paine
Keyword(s):  
Growth Rate ◽  
Uric Acid ◽  
Loblolly Pine ◽  
Radial Growth ◽  
Dendroctonus Frontalis ◽  
Radial Growth Rate ◽  
Acid Media ◽  
Low Concentrations ◽  
Pinus Taeda L ◽  
Ceratocystis Minor

Two symbiotic fungi (SJB 122, an unidentified basidiomycete, and Ceratocystis minor (Hedgecock) Hunt variety barrasii Taylor) and one pathogenic phoretic fungus (C. minor (Hedgecock) Hunt variety minor) of the southern pine beetle, Dendroctonus frontalis Zimmermann, were inoculated onto six different concentrations of D. frontalis frass, loblolly pine (Pinus taeda L.) phloem, and uric acid media to observe radial growth rates and chlamydospore production. The average radial growth rate per day of C. minor var. barrasii increased significantly from the control on all three media, but growth was faster at increased concentrations of added phloem compared with the other supplemented media. Significant increases in chlamydospores produced by C. minor var. barrasii from the control occurred only on frass media, with more chlamydospores being produced at higher concentrations. The average radial growth rate per day of SJB 122 fungus increased significantly from the control on only one concentration of phloem and two concentrations of uric acid, but decreased significantly on low concentrations of frass media. SJB 122 chlamydospore production increased with increasing concentration on frass, was not different from the control on phloem, and increased significantly at intermediate concentrations on uric acid. Ceratocystis minor var. minor average radial growth rate per day increased with increasing concentration on both frass and phloem media but on uric acid decreased significantly at higher concentrations, following an initial signficant increase as compared with the controls.

The Time Cone method for Nucleation and Growth Kinetics on a Finite Domain

1995 ◽  
Vol 398 ◽  
Author(s):  
John W. Cahn
Keyword(s):  
Growth Rate ◽  
Radial Growth ◽  
Nucleation And Growth ◽  
Time Dependent ◽  
Finite Domain ◽  
Radial Growth Rate ◽  
Transformation Kinetics ◽  
Statistical Solution ◽  
Closed Form Solutions ◽  
Growth Reaction

ABSTRACTThe Kolmogorov-Johnson-Mehl-Avrami theory is an exact statistical solution for the expected fraction transformed in a nucleation and growth reaction in an infinite specimen, when nucleation is random in the untransformed volume and the radial growth rate after nucleation is constant until impingement. Many of these restrictive assumptions are introduced to facilitate the use of statistics. The introduction of “phantom nuclei” and “extended volumes” are constructs that permit exact estimates of the fraction transformed. An alternative, the time cone method, is presented that does not make use of either of these constructs. The method permits obtaining exact closed form solutions for any specimen that is convex in time and space, and for nucleation rates and growth rates that are both time and position dependent. Certain types of growth anisotropies can be included. The expected fraction transformed is position and time dependent. Expressions for transformation kinetics in simple specimen geometries such as plates and growing films are given, and are shown to reduce to expected formulas in certain limits.

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