Stand development and growth responses of 1- and 3-year-old natural upland hardwoods to silvicultural treatments

2006 ◽  
Vol 232 (1-3) ◽  
pp. 124-134 ◽  
Author(s):  
Jamie L. Schuler ◽  
Daniel J. Robison
Keyword(s):  
Stand Development ◽  
Growth Responses ◽  
Silvicultural Treatments

scholarly journals Genotypic Stability Effects on Predicted Family Responses to Silvicultural Treatments in Loblolly Pine

1997 ◽  
Vol 21 (2) ◽  
pp. 84-89 ◽  
Author(s):  
Steven E. McKeand ◽  
Robert P. Crook ◽  
H. Lee Allen
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Growth Responses ◽  
Intensive Culture ◽  
Genotype By Environment ◽  
Silvicultural Treatments ◽  
Genotypic Stability ◽  
Superior Genotypes ◽  
Using Data ◽  
Pinus Taeda L

Abstract The lack of rank change in growth characteristics when open-pollinated families of loblolly pine (Pinus taeda L.) are planted on different sites in the Southeast has greatly simplified breeding for superior genotypes. Although family rank does not usually change, genotype by environment interactions (GxE) may be very important in operational deployment of families in regeneration programs. Using data from GxE trials and two site preparation-fertilization-herbicide trials, we estimated the growth that different families should achieve following application of these silvicultural practices. Better performing families tend to be most responsive to site changes (i.e. genetically unstable). Growth responses to silvicultural treatment will be overestimated if only the most responsive families are used in silvicultural research trials. Similarly, genetic gains will be overestimated if gain trials are planted on only the best sites or receive intensive culture. South. J. Appl. For. 21(2):84-89.

Understory structure in a 23-year-old Acacia koa forest and 2-year growth responses to silvicultural treatments

2008 ◽  
Vol 255 (5-6) ◽  
pp. 1604-1617 ◽  
Author(s):  
Paul G. Scowcroft ◽  
Janis E. Haraguchi ◽  
David M. Fujii
Keyword(s):  
Growth Responses ◽  
Acacia Koa ◽  
Silvicultural Treatments

Carbon dynamics of aboveground live vegetation of boreal mixedwoods after wildfire and clear-cutting

2010 ◽  
Vol 40 (9) ◽  
pp. 1862-1869 ◽  
Author(s):  
Meelis Seedre ◽  
Han Y.H. Chen
Keyword(s):  
C Sequestration ◽  
Stand Development ◽  
Clear Cutting ◽  
Silvicultural Treatments ◽  
C Pools ◽  
Understory Plants ◽  
Standing Trees ◽  
Central Canada ◽  
Vegetation Carbon ◽  
Boreal Mixedwoods

Live vegetation carbon (C) pool dynamics are central to understanding C sequestration of forest ecosystems. Despite its importance, how aboveground live C pools change with stand development in boreal mixedwoods is poorly understood. We quantified aboveground live C pools (i.e., trees, >4 m in height; saplings and shrubs, 1.3–4 m in height; and understory plants, <1.3 m in height) in a postfire chronosequence ranging from 1 to 203 years and a postlogging chronosequence ranging from 1 to 27 years in the boreal mixedwoods of central Canada. The tree C pool of postfire stands increased from 0 to 109.2 Mg/ha from 1 to 92 years after fire and then declined to approximately 70 Mg/ha in 140- and 203-year-old stands. Carbon pools of saplings and shrubs and understory plants also changed with stand development and stand origin. Of the three age classes compared, postlogged stands had significantly higher vegetation C than postfire stands 1 and 27 years after disturbance, but there was no difference in 9-year-old stands. Higher values of live vegetation C in postlogged stands was attributed to live standing trees left after logging and silvicultural treatments that helped trees to establish during stand initiation.

scholarly journals Prediction of Growth and Mortality of Oregon White Oak in the Pacific Northwest

2008 ◽  
Vol 23 (1) ◽  
pp. 26-33 ◽  
Author(s):  
Peter J. Gould ◽  
David D. Marshall ◽  
Constance A. Harrington
Keyword(s):  
Pacific Northwest ◽  
Development Model ◽  
Diameter Growth ◽  
Stand Development ◽  
Quercus Garryana ◽  
White Oak ◽  
Silvicultural Treatments ◽  
The Pacific ◽  
Oregon White Oak ◽  
Forest Managers

Abstract We developed new equations to predict Oregon white oak (Quercus garryana Dougl. ex Hook.) development within ORGANON, a stand-development model that is widely used in the Pacific Northwest. Tree size, competitive status, crown ratio, and site productivity were statistically significant predictors of growth and mortality. Three scenarios were projected with the new equations, the previous ORGANON model, and the Forest Vegetation Simulator. Compared with the two other models, the new equations predicted greater diameter growth in oak woodland and a greater effect of conifer removal in a conifer-oak stand. The new equations, which are based on considerably more information than previous equations, should give forest managers greater confidence in the ability of ORGANON to estimate the impacts of silvicultural treatments on oaks.

scholarly journals Climatic Stress during Stand Development Alters the Sign and Magnitude of Age-Related Growth Responses in a Subtropical Mountain Pine

PLoS ONE ◽  
2015 ◽  
Vol 10 (5) ◽  
pp. e0126581 ◽  
Author(s):  
Paloma Ruiz-Benito ◽  
Jaime Madrigal-González ◽  
Sarah Young ◽  
Pierre Mercatoris ◽  
Liam Cavin ◽  
...  
Keyword(s):  
Stand Development ◽  
Growth Responses ◽  
Climatic Stress ◽  
Mountain Pine ◽  
Age Related

Effects of intermediate silvicultural treatments on the distribution of within-stand growth

1994 ◽  
Vol 24 (2) ◽  
pp. 398-404 ◽  
Author(s):  
James A. Moore ◽  
Lianjun Zhang ◽  
James D. Newberry
Keyword(s):  
Stand Structure ◽  
Statistical Tests ◽  
Relative Size ◽  
Basal Area ◽  
Stand Density ◽  
Relative Distribution ◽  
Growth Responses ◽  
Stand Growth ◽  
Silvicultural Treatments ◽  
Individual Trees

The distribution of within-stand basal area growth following silvicultural treatments was investigated using a relative size–relative growth (RSG) function. The effects of thinning on the distribution of tree basal area, including changes in location or scale, can be incorporated into the estimation of the RSG function parameters. Additional stand growth due to fertilization can also be allocated to individual trees using the same RSG function, since the contribution of a tree's response to total stand treatment response depends on its relative size in the stand. Statistical tests and validation of the RSG function indicated that thinning and fertilization do not alter the characteristic relationships between tree size, stand density, stand structure, and the relative distribution of growth across size classes within a stand. Therefore, silvicultural treatment growth responses predicted at a whole-stand level of resolution can be disaggregated to a list of individual trees using the RSG function developed from untreated plots.

MICROPROPAGATION OF CHICKPEA FROM SHOOT TIP AND NODE SEGMENT

2018 ◽  
Vol 24 (2) ◽  
Author(s):  
J. D. BARSHILE
Keyword(s):  
Shoot Tip ◽  
Root Induction ◽  
Multiple Response ◽  
Ms Medium ◽  
Growth Responses ◽  
Rapid Multiplication ◽  
Micro Propagation ◽  
G 12 ◽  
Better Than

Present investigation was undertaken to standardize technique for in vitro micro-propagation of chickpea( Cicer arietinum ) cultivar Vishwas (Phule G 12). Micropropagation method for chickpea was established and this method enabled much more efficient propagation of plants. The present work was aimed at evolving a protocol for rapid multiplication of chickpea using micropropagation technique. Explants from shoot tip and node segment were cultured on MS medium supplemented with different concentrations of BAP and Kinetin (1.0 to 2.5 mg/l) and their growth responses like shooting were elucidated. The maximum multiple response was observed with 2 mg/l concentration of BAP from both types of explant. The highest number of shoots (12.5 ± 0.3) was achieved on MS medium with 2 mg/l BAP using node segments. The medium supplemented with 2 mg/l of BAP was found better than all other concentrations. Individual shoots were transferred to IBA and IAA (1.0-1.5 mg/l) for root induction. MS medium supplemented with 2 mg/l of IBA proved better for rooting. Rooted plantlets were successfully hardened in greenhouse and established in the pot.

ALTERNATIVE P-FERTILISERS FOR NORTHLAND SOILS

1986 ◽  
pp. 229-232
Author(s):  
P.W. Shannon
Keyword(s):  
Phosphate Rock ◽  
Growth Responses ◽  
Triple Superphosphate ◽  
Rock Phosphates ◽  
Distribution Costs ◽  
Phosphate Retention ◽  
Sechura Phosphate Rock ◽  
Local Product ◽  
Application Frequency ◽  
Chatham Rise Phosphorite

Increasing material, processing, and distribution costs have raised superphosphate prices to a point where many farms cannot support the costs of meeting maintenance phosphate requires men& Alternatives to superphosphate, particularly those that have lower processing costs and contain more P, may offer a solution to the problem provided they are agronomically as effective. Phosphate rock may indeed be such an alternative. Preliminary results from a series of five trials in Northland show that on soils of moderate P fertility, with low phosphate retention (PR) and high pH (5.9.6.0), initial pasture growth responses to rock phosphates are smaller than those from single or triple superphosphate. On one soil of higher PR and lower pH, the differences in yield between the rock-phosphates and the super. phosphates were smaller. Of the rock phosphates tested, Sechura and North Carolina (unground and ungranulated) tended to be more effective than ground and granulated Chatham Rise phosphorite. The effect on production of applying fertilisers once every three years, as opposed to annual applications is being investigated using triple superphosphate and Sechura phosphate rock. After two years, production levels appear largely unaffected by differences in application frequency. A comparison of locally-produced superphosphate with a reference standard showed that both performed similarly, indicating that the local product was of satisfactory quality.

Comparison of Growth Responses of 2-Day-Old Pigs to Streptomycin, Aureomycin, and Crude APF, Alone and in Combination with B12

1952 ◽  
Vol 11 (1) ◽  
pp. 97-102 ◽  
Author(s):  
B. E. Sheffy ◽  
R. H. Grummer ◽  
P. H. Phillips ◽  
G. Bohstedt
Keyword(s):  
Growth Responses
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