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Pengaruh Injeksi Larutan Gula Lontar Cair Terhadap Pertumbuhan Diameter Ranting Kesambi (Schleichera oleosa) Sebagai Inang Kutu Lak (Laccifer lacca) Faustinus Kadha; Supriyanto Supriyanto; N F Haneda
Savana Cendana Vol 8 No 2 (2023): Savana Cendana (SC) - April 2023
Publisher : Fakultas Pertanian, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (634.258 KB) | DOI: 10.32938/sc.v8i2.2014

Abstract

<div style="text-align: justify;"> The Laccifer lacca lives parasitically on kesambi (Schleichera oleosa) which has branches that are not too old or not too young and are gray-green in color. The Laccifer lacca sticks its proboscis into the branch and reaches the phloem tissue. Kesambi that lacks phloem fluid will cause decreased growth, yellow leaves and fall off. The purpose of this study was to inject liquid palm sugar solution into kesambi plant tissue by using an injection pump technique or a multi-injection technique. This research was carried out through the process of injecting kesambi, inoculation of Laccifer lacca, maintenance, and measuring the growth of branch diameter. The diameter of the branch where the Laccifer lacca live can be divided into 3 sizes, namely large (> 0.74 cm), medium (0.50–0.74 cm), and small (< 0.50 cm). The growth of branch diameter did not show a significant difference of 0.3 cm/5 months of observation at all concentrations of LGCL.</div>
Pemberdayaan KWT Mekar Sari Kelurahan Kefa Selatan melalui Pelatihan Pembuatan Kompos Biochar untuk Budidaya Tanaman Hortikultura Deseriana Bria; Natalia Desy Djata Ndua; Hyldegardis Naisali; Jefrianus Nino; Wilda Lumban Tobing; Faustinus Kadha; Bernardinus Kolo
Jurnal PKM Manajemen Bisnis Vol. 6 No. 1 (2026): Jurnal PKM Manajemen Bisnis
Publisher : Perhimpunan Sarjana Ekonomi dan Bisnis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37481/pkmb.v6i1.1691

Abstract

The issue of declining soil fertility and limited access to sustainable agricultural inputs is a major challenge for smallholder farmers in Kefa Selatan, Timor Tengah Utara Regency, East Nusa Tenggara Province. In response, a community service program was initiated under the title Empowerment of KWT Mekar Sari in Kefa Selatan Subdistrict through Biochar Compost Training for Horticultural Cultivation. The objective of this activity was to enhance the capacity of local farmers, particularly members of the Mekar Sari Women Farmers Group (KWT), in producing and utilizing biochar compost to improve soil quality and increase horticultural crop productivity. The activity was carried out from July to September 2024 in Kefa Selatan and involved 15 local farmers as participants, facilitated by a team of 7 lecturers and students from the University of Timor. The methods employed included educational sessions on the benefits of compost, hands-on training in biochar compost production, and demonstration of its application in horticultural crop cultivation. As a result, participants gained practical knowledge and skills in sustainable composting techniques and showed increased awareness of organic farming benefits. The training also stimulated greater community engagement and environmental awareness. This program is expected to serve as a model for similar initiatives in other rural communities.
Utilization of Local Natural Dyes and Mordants in Dyeing Polyester Yarn for Timor Woven Fabrics: Characterization and Potential Applications Marselina Theresia Djue Tea; Elisabeth Korbafo; Faustinus Kadha; Yohana Ivana Kedang; Fetronela Rambu Bobu; Agustina Mogi; Ernesta Wae; Janrigo Klamegio Mere; Gebhardus Djugian Gelyaman
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.11639

Abstract

The objective of this study was to extract natural dyes from plant parts, characterize them, and evaluate their color fastness properties. The yarns were bleached using hydrogen peroxide at a concentration of 10% (based on fiber weight) at 100°C for 30 minutes. Three natural dyes (teak leaves, turmeric, and mango bark) were selected as natural sources for color extraction, which was carried out for 60 minutes at 100°C. Dyeing was performed both with and without the addition of salt, alum, and lime as mordants. The FTIR spectra of fabrics dyed with natural dye extracts showed absorption bands at 2963–2918 cm⁻¹, indicating the presence of C-H stretching from methyl (CH₃) and methylene (-CH₂-) groups found in polyester. The band at 1710–1713 cm⁻¹ originated from the carbonyl (C=O) group, which is a main characteristic of polyester. The band around 1504–1577 cm⁻¹ was identified as aromatic C=C bond stretching. The band at 1338–1242 cm⁻¹ indicated C-O stretching, which may be attributed to ester groups in polyester. The band at 1091–1015 cm⁻¹ represented C-H bending, which is also characteristic of polyester molecules. Turmeric and teak leaves demonstrated better color fastness compared to mango bark.