scholarly journals GROWTH AND YIELD OF Shorea parvifolia PLANTED UNDER AKASIA PLANTS IN KAPUAS, CENTRAL KALIMANTAN

2016 ◽  
Vol 7 (3) ◽  
pp. S48-S49
Author(s):  
Wahyudi .
Keyword(s):  
Native Species ◽  
Research Result ◽  
Volume Growth ◽  
Acacia Mangium ◽  
Average Diameter ◽  
Growth And Yield ◽  
Central Kalimantan ◽  
Enrichment Planting ◽  
The Moment ◽  
Silvicultural System

Shorea parvifolia is the native species of Kalimantan and has a high commercial value. This research was aimed to analysis the growth and yield of meranti planted under Acacia mangium stands, as enrichment planting on the TPTI silvicultural system.  The research was conducted at Kapuas District, Central Kalimantan Province. Type of soil at the site is ultisol with 2 606 mm/year of precipitation average.  Initially, Acacia mangium planted with space namely 3 x 3 m at 1993. After two years, seedlings of Shorea parvifolia were planted among akasia plants with 1 111 tress/ha of density.  Thinning of akasia plants were conducted stage by stage, especially at the stunted plants or dead. The data were latest analyzed at 2014 or at the moment of 20 years old.  Research result showed that at the 1, 5, 10, 15, and 15 years old, life percentage of Shorea parvifolia are 94.8%, 78%, 66.4%, 57.5%, and 53% respectively. Average diameter of Shorea parvifolia at the same times are 1.27 cm, 6.13 cm, 12.8 cm, 19.86, and 27.46 cm respectively, and their average total height are 1.51 m, 5.27 m, 10.89 m, 17.18 m, and 24.41 m respectively. Volume growth of Shorea parvifolia at the same times namely 0.05 m3/ha , 3.97 m3/ha, 36.93 m3/ha, 145.44 m3/ha, and 303.62 m3/ha respectively.Key words: growth and yield, CAI, MAI, Shorea parvifolia.

Pitch Canker Impact on Volume Growth: A Case Study In Slash Pine Plantations

1984 ◽  
Vol 8 (1) ◽  
pp. 43-47 ◽  
Author(s):  
Loukas G. Arvanitis ◽  
John F. Goodbee ◽  
Iris Porta
Keyword(s):  
Volume Growth ◽  
Slash Pine ◽  
Growth And Yield ◽  
Pitch Canker ◽  
Diameter Class ◽  
Tree Diameter ◽  
Volume Increment ◽  
The Mean ◽  
The Impact

Abstract Measurements from 26 permanent test plots established in slash pine (Pinus elliotti var. elliotti Engelm.) plantations of northeast Florida and southeast Georgia in 1976 have been used to assess the impact of pitch canker on growth and yield of trees over time. The plots were remeasured annually for five years. The mean annual volume increment for infected trees was between 60 and 81 percent of that of the healthy trees. Trees that were repeatedly infected grew proportionately less, over the five-year period, than those that were infected only once or twice. The five-year periodic volume increment for the most severely infected trees was between one-third and two-thirds of that of healthy trees in the same diameter class. Incidence of infection was not correlated with tree diameter. The overall cubic foot volume loss due to growth suppression and mortality amounted to 4.5 percent of the expected total volume in 1981. This loss represents 15 percent of the anticipated five-year volume growth.

scholarly journals Growth of Black Spruce Trees Following Fertilization on Drained Peatland

1989 ◽  
Vol 65 (2) ◽  
pp. 102-106 ◽  
Author(s):  
Bijan Payandeh
Keyword(s):  
Black Spruce ◽  
Linear Regression Analysis ◽  
Volume Growth ◽  
Average Diameter ◽  
Multiple Linear Regression Analysis ◽  
Stepwise Multiple Linear Regression ◽  
Individual Tree ◽  
Individual Trees ◽  
Volume Equations ◽  
Tree Characteristics

Stem analyse of 67 peatland black spruce trees from previously drained experimental areas in northeastern Ontario that had been fertilized was used to examine effects on growth of individual trees. Stepwise multiple linear regression analysis was used to express pre- and post-fertilization diameter and volume growth as a function of site, stand and individual tree characteristics and amelioration treatments.Results indicated that, on average, diameter growth increased by 4% after fertilization. Standard volume equations, in comparison with sectional volume summation underestimated both inside- and outside-bark tree volumes by about 3%.

Quantification of realised genetic gain in radiata pine and its incorporation into growth and yield modelling systems

2015 ◽  
Vol 45 (12) ◽  
pp. 1676-1687 ◽  
Author(s):  
Mark O. Kimberley ◽  
John R. Moore ◽  
Heidi S. Dungey
Keyword(s):  
New Zealand ◽  
Genetic Gain ◽  
Genetic Improvement ◽  
Volume Growth ◽  
Radiata Pine ◽  
Site Index ◽  
Growth And Yield ◽  
Wide Range ◽  
Unit Increase ◽  
Using Data

Realised genetic gain for radiata pine (Pinus radiata D. Don) was estimated using data from 46 installations of three series of block-plot trials spanning a wide range of site types throughout New Zealand. These trials contained 63 unique seedlots with different levels of genetic improvement. Realised genetic gain was quantified using two measures of productivity: site index and 300 Index (a measure of volume productivity). The level of genetic improvement of each seedlot was determined by its GF Plus rating, a genetic rating system based on breeding values used for New Zealand radiata pine. There was a positive relationship between GF Plus rating and both productivity measures. Differences of 25% in total standing volume at age 30 years and of 5.6% in site index were found between unimproved (GF Plus 9.9) and highly improved (GF Plus 25) seedlots. Each unit increase in GF Plus rating was associated with a 1.51% increase in volume growth rate. In absolute terms, the magnitude of the increase was greater on more productive sites compared with less productive sites, although in percentage terms, it varied little between sites or regions. Quantification of genetic gain in this manner enables it to be easily incorporated into existing growth and yield simulators.

Current trends in management practices for European larch in North America

2002 ◽  
Vol 78 (6) ◽  
pp. 822-829 ◽  
Author(s):  
Daniel W Gilmore ◽  
Andrew J David
Keyword(s):  
North America ◽  
Site Selection ◽  
Native Species ◽  
Management Practices ◽  
Tree Improvement ◽  
Growth And Yield ◽  
European Larch ◽  
Current Trends ◽  
Successful Establishment ◽  
Improvement Programs

European larch (Larix decidua Miller) was introduced to North America in the mid-19th century. Its rapid growth led to its use as a reforestation species in northeastern North America during the early part of the 20th century. Proper site selection and vegetation management are crucial to the successful establishment and productivity of this species. On comparable sites, yields of European larch commonly exceed those of native species. Management practices and applied research for this species in North America include the refinement of 1) site selection criteria, 2) growth and yield tables, and 3) optimal density management and stocking levels, 4) product utilization and marketing, and 5) the advancement of tree improvement programs. Key words: growth and yield, productivity, silviculture, tree improvement

scholarly journals FAKTOR PENDUKUNG DAN PENGHAMBAT PERKEMBANGAN AGAMA LOKAL KAHARINGAN PADA ETNIS DAYAK

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Josef Dudi
Keyword(s):  
Qualitative Research ◽  
Cultural Change ◽  
Social Order ◽  
Research Method ◽  
Research Result ◽  
Social Institution ◽  
Religious Institution ◽  
Social Character ◽  
Central Kalimantan ◽  
Local Religion

This study aims to determine the driving and inhibiting determinants of the development of local religions Kaharingan on Dayak ethnic in the province of Central Kalimantan-Indonesia. This research employed a qualitative research method with a grounded approach. Based on the research result, it concludes: Firstly, the supporting factor of Kaharingan local religion existence are: 1) existence of reality that Kaharingan trust very strongly influencing social character and social order of civilization of Dayak Ngaju people, 2) Kaharingan local religion becomes the center of a touch of other faith, and 3) the existence of kademangan which is believed to be a social institution as well as a religious institution. Second, at least three factors are inhibiting the development of local religions Kaharingan on Dayak ethnic, namely 1) cultural change, 2) government intervention against customary institutions, and 3) fading mentality "betang".

Potentiality of King Chilli Based Agroforestry for Livelihood Development of Fringe Village of Hoollongapar Gibbon Sanctuary, Assam

2017 ◽  
Vol 24 (1) ◽  
pp. 1-5
Author(s):  
Arundhati Baruah ◽  
◽  
Indrani P. Bora ◽  
Keyword(s):  
Acacia Mangium ◽  
Nutrient Content ◽  
Growth And Yield ◽  
Capsicum Chinense ◽  
Farm Yard Manure ◽  
High Demand ◽  
Areca Catechu ◽  
On Farm ◽  
Additional Income ◽  
Significant Production

King Chilli (Capsicum chinense Jacquin) is a popular indigenous crop widely cultivated for each extra powerfull pungency, aroma and medicinal fruit value. Realizing its high demand in local as well as national and international market at on farm participatory research was undertaken to introduce King Chilli under Acacia mangium and Areca catechu for additional income. Growth and yield were positively influence by vermicompost treatment followed by farm yard manure and inorganic fertilizer respectively. King Chilli intercropped with Acacia mangium under vermicompost showed highest value of growth (106.2cm.) and yield (7.5gm) as compared to other treatment. In open condition least value was recorded as due to its shade loving nature. Nutrient content was recorded comparatively high A. mangium + King chilli plot which may be due to the nitrogen fixation by the tree. After harvesting of crop, least amount of nutrient was recorded due to the quick absorption by the plant. Above observation concluded that King Chilli showed significant production in vermicompost applied plot intercropped with Acacia mangium.

Hardwood Eradication Improves Productivity of Thinned Loblolly Pine Stands

1984 ◽  
Vol 8 (4) ◽  
pp. 194-197 ◽  
Author(s):  
T. R. Clason
Keyword(s):  
Pinus Taeda ◽  
Loblolly Pine ◽  
Volume Growth ◽  
Growth And Yield ◽  
Detectable Effect ◽  
Herbaceous Vegetation ◽  
Vegetation Control ◽  
Pine Stands ◽  
Pinus Taeda L

Abstract A single hardwood eradication treatment in a 7-year-old loblolly pine (Pinus taeda L.) stand along with pine stocking control increased growth and yield over a 10-year period. Herbaceous vegetation control had no detectable effect at ages 12 and 17. Treated plots had smaller stems, which could be controlled more readily by fire, although the number of understory stems was similar for all treatments. Mean annual radial and merchantable volume growth on treated plots surpassed controls by 30%. Future stand values were enhanced by removing hardwood competition. Residual stand sawtimber volumes on the treated plots were twice that of the control.

Silviculture affects composition, growth, and yield in mixed northern conifers: 40-year results from the Penobscot Experimental Forest

2003 ◽  
Vol 33 (11) ◽  
pp. 2116-2128 ◽  
Author(s):  
Paul E Sendak ◽  
John C Brissette ◽  
Robert M Frank
Keyword(s):  
Species Composition ◽  
Volume Growth ◽  
Good Control ◽  
Growth And Yield ◽  
Selection System ◽  
Stand Volume ◽  
Precommercial Thinning ◽  
Hardwood Species ◽  
Long Term Experiment

This long-term experiment in Maine, U.S.A., was designed to provide information on the best silvicultural practices for managing stands of mixed northern conifers in northeastern U.S.A. We evaluated growth and yield and changes in species composition, quality, and structure during the first 40 years of the experiment. Replicated treatments include the selection system, uniform shelterwood, unregulated harvesting, and diameter-limit cutting. The new cohort established under three-stage shelterwood was subsequently left untreated or precommercially thinned. Between-treatment differences in net volume growth were not significant (α = 0.10), though gross volume growth differed significantly for managed vs. unmanaged, selection vs. shelterwood, and shelterwood vs. diameter-limit treatments. A three-stage shelterwood method with precommercial thinning 10 years following final overstory removal resulted in good control of hardwoods and hemlock and a dramatic increase in spruce and fir. The selection system on a 5-year cutting cycle resulted in increased hemlock, spruce, and fir, with a decrease in hardwood species. If the primary goal were production, even-aged management would most likely be preferred. We recommend a two-stage shelterwood method as applied in this experiment with some modification to improve species composition and stand quality. Stand quality (proportion of stand volume in cull trees) and species composition was influenced by treatment.

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