Article
Agriculture, Multidisciplinary
Iwao Noda, Woraphun Himmapan, Naoyuki Furuya, Gaku Hitsuma
Summary: This study analyzed data from 407 trees in private teak plantations to determine the best taper model and bark thickness equation for this area. The study found that private teak trees had different stem forms and bark thickness compared to state-owned plantations, requiring the use of a different taper model. Equation K8 was recommended as the most accurate and precise model for predicting stem diameters in private teak plantations. These findings contribute to the understanding of teak taper equations and bark thickness in Thailand.
JARQ-JAPAN AGRICULTURAL RESEARCH QUARTERLY
(2023)
Article
Chemistry, Multidisciplinary
Pensri Charoensit, Fangjan Sawasdipol, Natthawadee Tibkawin, Nungruthai Suphrom, Nantaka Khorana
Summary: The study developed a new pigment from teak leaves, finding that ethyl acetate extract was suitable for pigment development through adsorption method, and aluminium hydroxide as a substrate provided a purple pigment with highest color intensity. Adjusting the mass ratio of aluminium hydroxide and extract can achieve desired color intensity for commercial use.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2021)
Article
Forestry
Abigail Marshall, Bailey P. McLaughlin, Camilla Zerr, Estrella Yanguas-Fernandez, Jefferson S. Hall
Summary: Enrichment planting can enhance the ecological and economic value of timber plantations by matching under- and overstory species appropriately. A case study in the Panama Canal Watershed shows the viability of enriching underperforming teak plantations with high-value neotropical timber species. Both species showed promising early growth in teak plantation understory conditions, suggesting their suitability for enrichment plantings in the area.
Article
Forestry
Karen Janones da Rocha, Cesar Augusto Guimaraes Finger, Cyro Matheus Cometti Favalessa, Sidney Fernando Caldeira, Frederico Dimas Fleig
Summary: This study aimed to develop suitable equations for accurately estimating the stem diameters and volume of Tectona grandis trees in the central-western region of Brazil. The Clark III et al. equation was found to be the most appropriate equation for estimating the diameters and volume of these trees.
Article
Energy & Fuels
Pitchaimani Veerakumar, Ramya Ramkumar, Chellakannu Rajkumar, Woo Kyoung Kim, Haekyoung Kim
Summary: This study reports the preparation of porous carbon material from teak leaves and its application in supercapacitors. The teak leaf carbon (TLC) was prepared through NaOH activation and pyrolysis under a nitrogen atmosphere. The TLC-900 exhibited micro- and mesoporous structures with high surface areas and pore volumes. It showed remarkable electrochemical properties and achieved high specific capacitance and stability in 3.0 M KOH electrolyte.
Article
Materials Science, Paper & Wood
Douangta Bouaphavong, Songklod Jarusombiti, Teera Veenin, Khamtan Phonetip, Khonethong Soukphaxay
Summary: Thermo treatment can modify the quality and density of teak veneer, and the degree of change depends on the temperature and time duration.
Article
Chemistry, Applied
Natthawadee Tibkawin, Nungruthai Suphrom, Nitra Nuengchamnong, Nantaka Khorana, Pensri Charoensit
Summary: The study evaluated the use of teak leaf extracts as natural hair dyes, finding that the extract from young leaves is redder and has a higher flavonoid content than that from mature leaves. 50% ethanol was identified as the best solvent for extracting high flavonoid content from teak leaves, and Polysorbate 20 increased the water solubility of both types of extracts. Overall, teak leaf extracts were shown to be effective natural hair dyes for use in hair dye product development.
COLORATION TECHNOLOGY
(2022)
Article
Microbiology
Leardwiriyakool Chaiya, Paiboolya Gavinlertvatana, Neung Teaumroong, Wasu Pathom-aree, Amornrat Chaiyasen, Rungroch Sungthong, Saisamorn Lumyong
Summary: The study found that applying beneficial teak rhizosphere microbes during nursery stock preparation significantly promoted teak growth, especially when applied in consortia, leading to increased teak seedling biomass. Additionally, the growth-promoting role of the arbuscular mycorrhizal fungus highly depended on the support from other teak rhizobacteria.
Article
Forestry
Antonin Kusbach, Jan Sebesta, Dean F. Meason, Tomas Mikita, Alex Martin Castellon Meyrat, Premysl Janata, Petr Madera, Vitezslav Hybler, Martin Smola
Summary: The study conducted a site-specific analysis of teak growth in a poor countryside in dry tropics of western Nicaragua, identifying terrain topography as the most influential driver of teak growth. Suitable areas for teak cultivation and tools for teak management were delineated based on the findings.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Forestry
Effendi Tri Bahtiar, Nam-Hun Kim, Apri Heri Iswanto
Summary: This study analyzed the annual tree rings of teak from a community plantation to determine its biological rotation age, and found that teak plantation is a sustainable and valuable asset with positive benefits for the economy and ecology.
Article
Forestry
Phongxiong Wanneng, Barbara Ozarska, Somvang Phimmavong, Benoit Belleville, Brian Davidson
Summary: The market demand and price for teak in Laos are influenced by various factors, with different types of teak timber commonly sold in different forms. The main wood products produced from plantation teak include joinery products, door and window frames, and furniture. End buyers of teak timber in Laos are mainly sawmillers and wood manufacturers, with different methods of supply from growers accounting for varying percentages. Prices of teak timber vary significantly based on factors such as timber types, log sizes, log quality, and distance from plantation site to road, indicating a need for a clear system or standard for teak log grading and pricing in Laos.
SMALL-SCALE FORESTRY
(2021)
Article
Green & Sustainable Science & Technology
Jawahar M. V. Vishnu, K. T. Parthiban, Umesh S. Kanna, S. Radhakrishnan, Uttam Kumar, Taimoor Hassan Farooq
Summary: This study developed 24 morphological descriptors for teak based on 30 seed sources collected from different states in India. The descriptors were used to describe the morphological characteristics of teak. While there were differences among the seed sources, most of them still exhibited high similarity.
Article
Multidisciplinary Sciences
M. V. Jawahar Vishnu, K. T. Parthiban, M. Raveendran, S. Umesh Kanna, S. Radhakrishnan, Rubab Shabbir
Summary: The studies on the physiological and biochemical traits of teak are limited. This study assessed the characteristics of thirty teak seed sources from different states in India, and identified several sources with superior growth performance.
SCIENTIFIC REPORTS
(2022)
Article
Microbiology
Zhi Yu, Kunnan Liang, Xianbang Wang, Guihua Huang, Mingping Lin, Zaizhi Zhou, Yinglong Chen
Summary: This study evaluated the responses of AM fungal communities in rhizosphere soils and roots to different stand ages of teak plantations and found that with increasing stand age, AM fungal colonization rates and spore density increased linearly. Changes in soil properties largely explained the alterations in the structure of the AM fungal community, while soil AM fungal community diversity was significantly higher than that in the roots. Soil nutrient availability and enzyme activity were identified as the main driving factors regulating the shift in the AM fungal community structure along a chronosequence of the teak plantations.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Genetics & Heredity
Miaomiao Liu, Guang Yang, Wenlong Zhou, Xianbang Wang, Qiang Han, Jiange Wang, Guihua Huang
Summary: This study investigated the gene expression of teak seedlings under low-temperature stress using RNA-seq and WGCNA analyses. The results revealed that low-temperature acclimation can enhance the resistance of teak to cold stress, and identified several genes and modules associated with the response to cold stress.
