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2286 Articles

Published in last 50 years

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A preclinical approach to textile finishing and evaluation of bamboo fabric coated Acalypha indica and Tectona grandis for wound-dressing material

This study explores the potential of Acalypha indica and Tectona grandis leaf extracts in wound-dressing applications, emphasizing the development of natural, bio-based treatment options. Using ultrasonic-assisted extraction (UAE) with ethanol, the extracts were coated onto bamboo woven fiber fabric at varying concentrations (50%, 75%, and 100%). Comprehensive characterization of bioactive compounds was conducted through phytochemical analysis, thin layer chromatography (TLC), antioxidant assays (FRAP), gas chromatography mass spectrometry (GC-MS), and Fourier-transform infrared (FTIR) spectroscopy. The coated fabric exhibited effective antibacterial properties against Bacillus subtilis and Escherichia coli . In addition, tests on fragrance, color intensity, and olfaction showed that the treated fabric maintained a pleasant herbal aroma lasting up to 20 washes. To further investigate the role of bamboo fabric as a substrate, an in vivo wound healing assay was performed on Wistar rats over 21 days. The 75% and 100% extract concentrations demonstrated over 90% wound closure, with the fastest healing time being 17 days. These results highlight that bio-extract-treated bamboo fabric not only promotes wound healing but also offers textile-related advantages, positioning it as a promising candidate for functional healthcare textiles.

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  • Journal IconTextile Research Journal
  • Publication Date IconMay 10, 2025
  • Author Icon J Bindhu + 5
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Optical nonlinearity of Tectona Grandis L.f. (teak) leaf extract under continuous wave and pulsed laser excitation

Optical nonlinearity of Tectona Grandis L.f. (teak) leaf extract under continuous wave and pulsed laser excitation

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  • Journal IconJournal of Photochemistry and Photobiology A: Chemistry
  • Publication Date IconMay 1, 2025
  • Author Icon Beryl C + 4
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Pengawasan Hutan Jati pada Cabang Dinas Kehutanan Wilayah Bojonegoro

This community service initiative aims to enhance the effectiveness of teak forest monitoring in the Bojonegoro Regional Forestry Branch (CDK) through active community participation and the utilization of technology. Teak forests hold significant economic value, but the high demand for teak wood often leads to illegal logging practices that threaten forest sustainability. Through a participatory approach, local communities are involved in patrols, monitoring, and social forestry programs. Technologies such as drones and satellite imagery are employed to improve the accuracy and efficiency of forest condition monitoring. The results of the initiative show a significant reduction in illegal logging cases, increased community awareness of the importance of forest conservation, at the success of reforestation and land rehabilition programs. Challenges faced include limitations in personnel and technological resources, as well as cases of document forgery. Recommendations for improving monitoring effectiveness in the future include enhancing personnel capacity, adopting more advanced technologies, and fostering closer coordination beetwen the government, communities, and other stakeholder. Overall, this initiative has successfully created synergy among parties in efforts to conserve teak forests, enabling sustainable forest management for ecological, economic, and social benefits.

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  • Journal IconEl-Mujtama: Jurnal Pengabdian Masyarakat
  • Publication Date IconMay 1, 2025
  • Author Icon Ikhsan Hill Syafaat + 2
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Wettability of Chemically and Thermally Modified of Fast-Growing Teak Wood

Fast-growing species are chemically and thermally modified to improve quality. These changes affect wood’s chemical composition and surface characteristics. This study aims to analyze the durability of fast-growing teak wood that has been chemically and thermally modified. Chemical modification was carried out by impregnation using citric acid and polyethylene glycol (PEG) 400, while heat modification carried out at 150 °C. The wettability of wood was tested by measuring the contact angle with six types of liquid, aquades, toluene, glycerin, methanol, alkyd, and acrylic paint. The results showed that chemical modification treatment significantly improved the wettability of wood compared to control and heat treatment. Wood treated with citric acid and PEG 400 exhibits a lower contact angle, indicating increased liquid absorbency. Conversely, heat treatment increased the contact angle value making the wood more hydrophobic. Alkyd showed better wettability than acrylic paints, possibly due to their lower viscosity values. This suggests that chemical modification more effectively improves wood coating adhesion.

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  • Journal IconPERENNIAL
  • Publication Date IconApr 30, 2025
  • Author Icon Nisrina Putri Hanifah + 3
Open Access Icon Open AccessJust Published Icon Just Published
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Yield model and yield table construction in farm grown teak (Tectona grandis, Linn. F) under different agroclimatic zones of Tamil Nadu, India

The market value of Tectona grandis has significantly increased due to the growing demand for its high quality wood. Known for its versatile applications, Tectona grandis is commonly cultivated in block and boundary formations across communal lands. A field study was conducted across four agro-climatic zones of Tamil Nadu, namely the North Eastern Zone (NEZ), North Western Zone (NWZ), Cauvery Delta Zone (CDZ) and Western Zone (WZ), covering three different age classes across 120 farm-grown plantations. Biometric parameters of the trees, including height and diameter at 2-m intervals, were recorded using a tree telescope. The collected data was processed and Multiple Linear Regression (MLR) analysis was applied to develop a yield model, enabling the construction of accurate yield tables for Tectona grandis without relying on a form factor. The following yield models were developed for the respective zones: NEZ as Y1= -0.291 + (0.002*Age) + (0.026**Mid diameter) + (0.010**Height), NWZ as Y2= -0.163 - (0.012** Age) + (0.028** Mid diameter) + (0.009** Height), CDZ as Y3= -0.343 - (0.001 Age) + (0.023** Mid diameter) + (0.024** Height) and WZ as Y4= -0.187 - (0.002 Age) + (0.051** Mid diameter) - (0.036** Height). The key finding of this study is that the growth of Tectona grandis varies significantly across different agro-climatic zones. This variation can be effectively monitored using statistically constructed yield tables, which provides a valuable tool for the sustainable management of Tectona grandis plantations.

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  • Journal IconPlant Science Today
  • Publication Date IconApr 28, 2025
  • Author Icon S N Krishnan + 8
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Evaluation of the Strength of Natural Dyeing from Teak Wood Extract on Traditional Weaving Yarn

This study uses different fixation materials to investigate the colour fastness of natural dyes derived from teak wood extract (Tectona grandis) on traditional woven yarns. Four fixation agents—aluminium sulphate (Al₂(SO₄)₃):sodium bicarbonate (NaHCO₃):calcium carbonate (CaCO₃):and ferrous sulphate (FeSO₄)—were tested at different fixation stages (initial, middle, and final). Colour fastness was assessed through washing and sunlight exposure tests, with ANOVA used to analyse statistical significance. The results indicate that aluminium sulphate exhibited the highest initial colour retention (52.36%):but its effectiveness declined significantly over time. In contrast, sodium bicarbonate maintained more stable colour retention in later stages, making it a promising alternative for long-term durability. The findings highlight the critical role of fixation selection in optimising natural dyeing processes and suggest practical applications for large-scale sustainable textile production. Future research should explore hybrid fixation methods and environmentally friendly alternatives to enhance colour stability.

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  • Journal IconTextile & Leather Review
  • Publication Date IconApr 11, 2025
  • Author Icon + 12
Open Access Icon Open Access
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Impact of post-anthropogenic forest fire on soil carbon dynamics and physicochemical properties in tropical dry deciduous Sulia Reserve Forest, Odisha.

Anthropogenic forest fire is an emerging cause for forest degradation, which primarily alters soil physicochemical characteristics and carbon content. For assessing these effects, the current study compares soils of unburned (as CON), managed (as MAN) planted locations (Shorea robusta, Tectona grandis), and burned (as BUR) locations of Sulia Reserve Forest of Nayagarh, Odisha. Soils were collected from below surface litter (BSL) (0 to 5cm), top soil (TS) (5 to 15 cm), and sub-soil (SS) (15 to 30 cm) randomly from selected patches. Samples were analysed for colour, texture, pH, bulk density (BD), water holding capacity (WHC), electrical conductivity (EC), potassium (K+), and nitrogen (N). Also, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and Fourier transform infrared spectroscopy (FTIR) were utilised to study the soil mineralogical and surface properties. In comparison to unaffected locations (CON and MAN), the BUR soil showed increased levels of EC, OC (oxidisable carbon), TOC (total organic carbon), SOM (soil organic matter), K+, and available nitrogen (AN). However, suppression in total nitrogen (TN) was observed for BUR locations in BSL samples. In BUR, the range of EC (0.12-0.29 S/m), OC (1.8-2.8%), TOC (2.5-3%), and SOM (4-6%) demonstrated variability in soil physicochemical properties. The BUR soils reflect significant changes in feldspar, haematite, and kaolinite. The results also highlight the C alteration and enhancement of nutrients (K+ and N) availability in BUR soil. The assessment demonstrates complex behaviours of soil properties due to forest fire within a dry deciduous forest and emphasises a location specific management plan to conserve the natural resource.

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  • Journal IconEnvironmental monitoring and assessment
  • Publication Date IconApr 10, 2025
  • Author Icon Sudipta Nayak + 2
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An Experimental and Analysis Comparison of Solid Wood Bridle Joints with Various Fastener and Retrofit Methods

Teak (tectona grandis) is a material widely used for roof framing, known for its load-bearing capacity. Many buildings, including wooden ones, suffered significant damage after an earthquake due to failure of meeting technical requirements for seismic resistance. Therefore, it is necessary to strengthen the wooden roof trusses before a strong earthquake occurs. This study examines the structural behavior of L-type solid wood trusses under different fasteners, strengthening methods, and loading directions, and compares the experimental test with analysis methods. The test specimens consisted of teak L-joints with dimensions of 2 mm³ ×70 mm³ ×140 mm³ ×800 mm³ and a total of 32 pieces. Four types of fasteners were used: wooden plugs (4ø16 mm), bolts (4ø1/2"), nails (13ø3.76 mm), each with a length of 2.5", and screws (26ø3.50 mm) each with a length of 1.5". The retrofit materials were: L35.35.3 iron profile, C70.35.0.45 stainless steel, and 60.4 strip plate. The specimens were loaded in two directions: upright and sideways using a flexure tester with a maximum capacity of 150 kN and a maximum displacement stroke of 100 mm, which continued until peak load was reached, and then stopped after a load drop. The maximum load on the L-joint was found to be higher in the upright position than in the side-up position. The highest load capacities were achieved with the following fasteners: bolts, screws, nails, and wooden dowels, for both loading directions. Retrofitting with iron profile shows the greatest increase in load capacity for both loading directions. For right-up loading, retrofitting with strip plates is better than stainless steel, while for side-p loading, stainless steel retrofit is better than the strip plate. Failure modes were mainly shear cracks in the joint area originating from the bolt and pin holes. Failures were observed as breakage in wooden pins, and shear failure in nails and screws. The comparison of the maximum load capacity of the experimental test shows higher results compared to the results of the analysis calculation, with a ratio of about 1.20. The formula for calculating the load resistance of the joint, with a constant value of 73.11, in the literature review must be corrected to 70.80 for nail joints, 70.40 for bolt joints, and 62.10 for screw joints.

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  • Journal IconEngineering, Technology & Applied Science Research
  • Publication Date IconApr 3, 2025
  • Author Icon Ketut Sulendra + 2
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Dimensional Stability and Moisture Content of White Teak Wood Treated with Nano-SiO2 and Furfuryl Alcohol

The objective of this study is to assess the impact of nanoparticle impregnation on the moisture content and dimensional stability of white teak wood derived from Southeast Sulawesi, Indonesia. The impregnation method was employed to process white teak wood samples, with varying concentrations of Furfuryl Alcohol (FA) and nano-SiO2. The wood samples underwent examinations to quantify the moisture content, dimensional changes, and mechanical properties after treatment, including Weight Percent Gain (WPG), Bulking Effect (BE), Anti-Swelling Efficiency (ASE), and Water Uptake (WU). The results indicated that the dimensional stability of white teak wood was considerably enhanced with the impregnation process, as evidenced by a decrease in swelling, compared to the untreated wood. Additionally, the moisture content of impregnated wood decreased significantly, suggesting improved moisture resistance. These findings demonstrate that the application of nano-SiO2 and FA as impregnation materials offers a viable solution for enhancing the quality and durability of white teak, potentially expanding its applications in the construction sector.

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  • Journal IconEngineering, Technology & Applied Science Research
  • Publication Date IconApr 3, 2025
  • Author Icon Nini H Aswad + 5
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The Species Richness of Plant in Ngesrepbalong Village which have the Potential to be used as Natural Ecoprint Motifs

Abstract One of the creative economies currently being developed by the community in Ngesrepbalong Village is ecoprint products. Ecoprint is a technique of printing on fabric using natural or environmentally friendly dyes and creating motifs from leaves, flowers, twigs, or bark attached to the fabric, thus creating a motif on the fabric. Ngesrepbalong Village, with its diversity of flora, has great potential as a source for making natural ecoprint motifs. However, studies are needed to identified what the species richness of plants in Ngesrepbalong Village can be used for natural ecoprint motifs. This research used exploration and interview methods. The research period starts in May – July 2024 in residential areas, gardens, and secondary forests. Meanwhile, interviews were conducted with a local community in Ngesrepbalong Village. The research showed that 19 species of plants from 13 families were identified as plants that could be used as natural ecoprint motifs. These species are often found in residential areas. The parts of plant organs used as ecoprints are leaves. African leaves (Vernonia amygdalina), eucalyptus leaves (Eucalyptus sp), and teak leaves (Tectona grandis) are the species most widely used.

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  • Journal IconIOP Conference Series: Earth and Environmental Science
  • Publication Date IconApr 1, 2025
  • Author Icon M Rahayuningsih + 7
Open Access Icon Open Access
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A study on insecticidal potential of Balanites aegyptiaca (l.) Delile seed kernel oil in management of Hyblaea puera (Teak defoliator) on teak in Tamil Nadu

Balanites aegyptiaca (family: Zygophilaceae) otherwise known as desert dates is a prioritized species of many African, Middle East and South Asian countries due to its wide environmental adaptability, long living nature, easy regeneration from seeds and coppice, etc. Edible fruits, animal feed, firewood, soap, detergent, and high-quality charcoal are among the uses of this crop. It is also reported for ethnomedicinal uses to treat a variety of illnesses including jaundice, asthma, malaria, syphilis, epilepsy, haemorrhoids and more. Most significantly, it manages vector mosquitoes (eg. Aedes aegypti, Anopheles gambiae, Culex pipiens), which are considered as deadliest animals in the world. In present investigation, seed kernel extracted oil was tested for in-vitro bioassay against Hyblaea puera, a notorious lepidopteran defoliator of the highest valued timber crop Tectona grandis (teak) in India. This resulted in 77% mortality with 55% anti-feeding within 24 hours at 1% concentration. During the investigation, top five superior B. aegyptiaca populations have been identified based on seed availability and percentage of oil yield obtained by Duncan's Multiple Range Test (DMRT), Analysis of Variance (ANOVA). Of the 21 screened populations in Tamil Nadu, the maximum oil yield was obtained from Kalugumalai, Thoothukudi (63.17 ± 0.91), while the lowest was in Ammathur, Virudhunagar (38.43 ± 1.43). Additionally, a slight positive correlation (r=0.315) between seed area and oil yield percentage was discovered at 0.01 level of significance in 2-tailed Pearson's correlation. Further, methanol extracted the maximum number of phytochemicals with insecticidal potential, such as phenolic compound, tannin and saponin.

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  • Journal IconInternational Journal of Zoology and Applied Biosciences
  • Publication Date IconMar 31, 2025
  • Author Icon + 15
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Effect of bin width on variogram model accuracy: a case study of teak tree volume specific to Solomon clone in Tawau, Sabah, Malaysia

The volume of teak trees (Tectona grandis Linn. f.) was analyzed using data from a teak plantation managed by the research and development team at Sabah Softwood Berhad in Brumas Camp, Tawau, Sabah, Malaysia. To fit the exponential model to the experimental variogram, various bin widths were used to obtain different variogram models. These models were plotted for comparison, and the root mean square error (RMSE) was calculated. Additionally, cross-validation was performed to assess the predictive accuracy of each model for the unseen data. The analysis indicated that a bin width of 0.003—that was approximately 333 m apart—was ideal for fitting the exponential model. This width demonstrated the lowest RMSE and ideal graphical observations. This study confirms that selecting the optimal bin width significantly affects the accuracy of model predictions, regardless of the sample size.

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  • Journal IconForest Science and Technology
  • Publication Date IconMar 30, 2025
  • Author Icon Johannah Jamalul Kiram + 5
Open Access Icon Open Access
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Growth variability of farm grown teak in response to climatic and soil factors across three agroclimatic zones of Tamil Nadu, India

Teak (Tectona grandis, Linn. f) is a prized hardwood species with remarkable properties that make it a favored material in various industries. In current trend, the cultivation of teak in farmlands is considered as a promising option. But the documentation and research on growth attributes and the studies on influence of climatic and edaphic factors on growth of teak raised in farmland condition is lacking. In this regard, the present investigation on farm grown teak was perpetrated in three agroclimatic zones viz., High Rainfall Zone, Southern Zone and Cauvery Delta Zone of Tamil Nadu in four different age classes (0–5, 5–10, 10–15 and 15–20 years). The study was carried forward with the prime motive of determining growth attributes and analyzing the impact of climatic and edaphic parameters on growth biometry of farm raised teak, both in block and boundary plantations. The soil physico-chemical parameters were analyzed both in surface (0–15 cm) and subsurface (15–30 cm) of plantations and the outcomes were presented in the form of cluster heat map, the results revealed that maximum organic carbon (0.62%), available nitrogen (197 kg ha−1), available phosphorous (22 kg ha−1), available potassium (340 kg ha−1), bulk density (1.34 g/cm3) and porosity (51.10%) were observed in surface soils of high rainfall zone. The follow-up of correlation studies between growth and climatic variables using R-software brought to light that tree volume positively correlated with climatic parameters viz., annual rainfall, mean minimum temperature and mean relative humidity, but showed negative correlation with respect to mean maximum temperature in both boundary and block plantations. Harmoniously, the correlation analysis between growth and edaphic parameters showed positive correlation with edaphic variables viz., organic carbon, available nitrogen, available phosphorous and available potassium, whereas growth depicted negative correlation with pH and electrical conductivity in both boundary and block plantations. In addition, principal component analysis was carried out to determine the most contributing factor among all and also to portray the highly suitable zone for teak cultivation. The overall study results portray that among climatic parameters, annual rainfall has significant impact on growth of teak and with respect to edaphic variables organic carbon play a crucial role in improving the growth of teak raised in farm settings. In regard to various zones surveyed, High Rainfall Zone exhibit favorable climatic and soil conditions, which in turn reflect better growth performance when compared to other zones taken into consideration.

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  • Journal IconScientific Reports
  • Publication Date IconMar 29, 2025
  • Author Icon R Ashick Rajah + 13
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Microbial Population Dynamics under Tropical Trees in an Arboretum

Studies have shown that microbial community structure is influenced by tree species identity thus the objective of this study was to determine microbial community structure in the rhizosphere of five selected tropical trees. This research was conducted at the Forestry Arboretum of the Faculty of Agriculture, University of Port Harcourt. Random sampling was used to collect soil samples from the rhizosphere of selected trees at a depth of 0-30cm for microbial analysis and identification in the laboratory using standard procedures. Results showed significant difference in microbial population across all trees with the highest microbial population observed under Tectona grandis (4.6x106 cfu/g) and the lowest microbial population recorded under Irvingia gabonensis. Ranges of microbial population were, total heterotrophic bacteria 0.88x106cfu/g – 4.6x106 cfu/g, and total heterotrophic fungi 3.0x103 cfu/g – 15.0 x103 cfu/g. Microbial diversity showed variation across all tree species, a total of 11 Bacteria and 9 fungi species were isolated and identified. Bacillus spp was the most predominant bacterium; Aspergillus spp was the most predominant fungus, highest microbial diversity was observed under Tectona grandis and Gmelina arborea, and lowest microbial diversity was found under Nauclea diderrichii. All five selected tropical tree species had effect on the microbial community structure but Tectona grandis exerted the most effect. This tree can therefore be utilized in agroforestry to boast nutrient availability and sustainable agriculture.

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  • Journal IconAsian Journal of Current Research
  • Publication Date IconMar 28, 2025
  • Author Icon Nengi-Benwari, A.O + 2
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Litterfall and nutrient dynamics in an eighteen-year-old teak plantation

A study on litterfall and nutrient dynamics in an 18-year-old teak (Tectona grandis Linn. f.) plantation was carried out at Forest College and Research Institute, Mettupalayam. The total litterfall for the entire one-year study period was found to be 11255 kg ha-1, of which the leaf litter alone accounted the maximum share of 81.90 % to the total litterfall, followed by the twigs (6.50%), fruits (6.30 %) and flowers (5.30 %). A total of, 110.26 kg ha-1 of nitrogen (N) was returned to the soil through the total litterfall. The total annual P return through litterfall was 17.50 kg ha-1 of which leaves accounted for 75.00 % to the total return, followed by flowers (12.60 %), fruits (10.70 %) and twigs (5.10 %). The total annual potassium (K) return from various litter components was 35.03 kg ha-1 of which, the major share was from leaf litter (79.80 %). The annual total return of calcium (Ca) from litterfall was 348.97 kg ha-1 and magnesium (Mg) return was 78.46 kg ha-1. This study concluded that leaf litter was the primary source of nutrients. Among the return of nutrients, Ca was returned to the soil in greater quantities, followed by N > Mg > K > P.

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  • Journal IconPlant Science Today
  • Publication Date IconMar 13, 2025
  • Author Icon S Manivasakan + 2
Open Access Icon Open Access
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Tree integration in conservation agriculture: A case study of teak (Tectona grandis) + bael (Aegle marmelos) based agroforestry in the Bundelkhand region

The present study was carried out during the winter (rabi) seasons of 2021–22 and 2022–23 at ICAR-Central Agroforestry Research Institute, Jhansi, Uttar Pradesh to study the impact of conservation agriculture practices within a teak (Tectona grandis L.) + bael (Aegle marmelos L.)-based agroforestry system on growth rate and yield parameters of tree and crop component, as well as on soil properties. It examined the effect of tillage methods and residue retention on the growth and yield of chickpea (Cicer arietinum L.) and linseed (Linum usitatissimum L.) as well as soil properties. The experiment was laid out in a randomized block design (RBD), with three replications having eight treatments of comprising combinations, viz. Tillage methods (conventional and minimum); Cropping systems (sorghum-chickpea and maize-linseed); and Residue management practices (residue retention and no retention). Results indicated that residue retention under conventional tillage significantly enhanced plant height and dry matter accumulation in both linseed and chickpea. Crop yields were comparable under conventional and minimum tillage, although residue retention significantly boosted the yields of both crops. Conservation agricultural practices contributed to higher productivity in the teak + bael-based agroforestry system. Residue retention improved soil organic carbon content by 24–39% compared to no residue retention. Additionally, nutrient availability (N, P, K, S, Zn, Fe, Mn, and Cu) was enhanced through minimum tillage combined with residue retention.

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  • Journal IconThe Indian Journal of Agricultural Sciences
  • Publication Date IconMar 5, 2025
  • Author Icon Asha Ram + 11
Open Access Icon Open Access
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Using proteomics to predict indoor potted plant and tree plant responses under particulate matter stress

ABSTRACT Plant stress response plays an important role in PM phytoremediation; nevertheless, research on impacted plant proteins against PM is limited. This study aim to examine the proteins and stress responses of indoor potted plants and tree plants, suggesting adaptable and resilient plants under PM stress. Six common plants, including indoor potted plants and tree plants, were exposed to PM from cigarette smoke for 24 h. Calathea makoyana, Sansevieria trifasciata, and Zamioculcas zamiifolia were indoor potted plants, with Bauhina purpurea, Tectona grandis, and Wrightia religiosa as trees. The initial PM concentrations were 300–320, 400–450, and 500–530 μg m−3 for PM1, PM2.5, and PM10. Each plant's response was compared to determine how each group and plant responded to PM stress. All plants have diverse protein expressions. Tree plants showed enriched proteins in photosynthesis, antioxidant enzymes, and carbon metabolism. These pathways were responsible for plant growth, productivity, and health, which suggests adaptable and resilient plants under PM stress. This study used 24-hour PM exposure to identify a group of potentially significant pathways under PM stress in the early period. The study proposes new insights into the plant response to PM stress for choosing suitable plants for sustainable phytoremediation.

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  • Journal IconChemistry and Ecology
  • Publication Date IconMar 5, 2025
  • Author Icon Bayu Hadi Permana + 6
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Benefit-cost analysis of smallholder teak plantations in Northern Thailand: de facto practice and high input scenarios

Teak (Tectona grandis) is a commonly recommended tree species for forest smallholders. While market prospects may look promising, forest smallholders may face constraints. This study assesses the financial viability of smallholder teak plantings in Thailand. Real-world scenarios based on key informant interviews, timber market surveys and plantation inventories were developed. Most smallholders apply short rotation low-input management with internal rates of return (IRRs) of 14 and 28%. In contrast, a long rotation high input model was designed resulting in IRRs of 15 and 18%. Net present values (NPVs) were positive for discount rates ranging from 5% to 15% except for the low input scenario under poor growing conditions. However, long gestation periods, restrictive regulations and uncertain revenues discourage smallholders from investing in teak plantations. In terms of policy recommendations, increased transparency regarding thinning, harvest and transportation permits as well as on price regimes would be attainable through digitization.

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  • Journal IconInternational Forestry Review
  • Publication Date IconMar 1, 2025
  • Author Icon M Starfinger + 3
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Synthesis and Characterization of Nanogels Incorporating Tectona grandis Seed Extract for Enhanced Drug Delivery

This research emphasizes the formulation and analysis of nanoparticles incorporated into a nanogel utilizing Tectona grandis seed extract. Silver nanoparticles (AgNPs) were synthesized using silver nitrate solution, serving as silver precursor. The resulting nanoparticles were characterized through various techniques, including particle size analysis, zeta potential measurement, energy-dispersive X-ray analysis (EDX), UV-visible spectroscopy, field emission scanning electron microscopy (FESEM), Fourier-transform infrared (FTIR) spectroscopy and transmission electron microscopy (TEM). To develop the nanogel, the synthesized nanoparticles were combined with a gelling agent. The nanogel was further evaluated for parameters such as physical appearance, pH, spreadability, washability, viscosity and antibacterial activity. Among the formulations tested, batch F1 showed the highest efficacy and stability. The antimicrobial potential of the AgNPs was confirmed through the agar well diffusion method, which exhibited a 48 mm zone of inhibition against Escherichia coli. Additionally, a zone of inhibition was detected within 1 day on petri plates treated with 50 as well as 100 µg of silver nanoparticles. The nanogel was further evaluated for its wound healing activity using an excision wound model. Results demonstrated a significant reduction in wound area and improved healing rates in comparison to the control group, with batch F1 exhibiting the fastest wound closure within a specified period. The heightened wound healing potential arises from the combined belongings of the antibacterial property and therapeutic benefits of silver nanoparticles with Tectona grandis seed extract. These findings highlight the potent antibacterial and wound healing properties of Tectona grandis seed extract-loaded nanoparticles, indicating their potential as effective candidates for topical therapeutic applications.

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  • Journal IconAsian Journal of Chemistry
  • Publication Date IconFeb 28, 2025
  • Author Icon Naykar Sharmila Shashikant + 1
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Development and Evaluation of a Polymer Composite Material Reinforced by Tectona Grandis Fiber, with Static Analysis.

This research seeks to investigate the viability of using Tectona grandis wood powder as a reinforcement material in polymer matrix composites because of the increasing awareness of natural fibers that offer impressive characteristics and cost-effectiveness in addition to being biodegradable. The fibers were mixed with epoxy resin, and the mixture was passed through a filter to remove fiber bundles and then compression molded to form composites, which were cured in an oven. Different experiments were performed on the composite to measure its mechanical characteristics. The tests performed were a tensile test to measure the mechanical properties of the material like strength and elastic properties, a compression test for evaluating the behavior of the material under a compressive load, a hardness test for the rate of indentation resistivity, and an impact test for the material's ability to withstand shock loads. The results showed that fiber reinforcement caused a significant enhancement in the mechanical aspect of the composite, where the compression strength obtained was 249.83 MPa, and the tensile strength obtained was 17.98 MPa. SEM microstructural analysis and a moisture absorption test were performed, while an additional analysis was carried out using Ansys work bench software. This research proves that Tectona grandis wood powder improves the mechanical properties of polymer composites and represents a viable substitute for synthetic reinforcements.

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  • Journal IconPolymers
  • Publication Date IconFeb 27, 2025
  • Author Icon Sandeep Bavanam Nagaraja Reddy + 3
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