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All Journal HAYATI Journal of Biosciences Wahana Forestra: Jurnal Kehutanan Biosaintifika: Journal of Biology & Biology Education Jurnal Silva Tropika
Tarmadi, Didi
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Biological Control of Wood Destroying Organism Using Plant Extracts Collected from Mt. Merapi National Park, Indonesia Ismayati, Maya; Zulfiana, Deni; Tarmadi, Didi; Lestari, Anis Sri; Krishanti, Ni Putu Ratna Ayu; Himmi, Setiawan Khoirul; Fajar, Anugerah; Yusuf, Sulaeman
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 3 (2019): Article-in-Press
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v11i3.20102

Abstract

Due to the climate change and global warming, the biodiversity database has gained the attention of the government. In line with the Indonesian Biodiversity Strategy and Action Plan (IBSAP), we have collected plants with insecticidal activity based on the local wisdom. This program aimed to protect Indonesian biodiversity from deforestation along with the loss of the number of species. This research?s goal was to evaluate termiticidal and antifungal properties from some plant extracts collected from the Turgo forest area, Mt. Merapi National park, Java. Three potential plants were evaluated. Based on specimen identification, the three plant samples were Kina (Cinchona sp.), Kamadoh (Dendrocnide stimulans (L.f.) Chew), and Keremi (Homalanthus populneus (Geiseler) Pax). The phytochemical test showed that Kina contained alkoloid, falvonoid, saponin, and tannin, whereas Kamadoh and Keremi contained saponin and tanin, respectively. Overall, all plant extracts have the termiticidal activities and able to inhibit wood- decay fungi with the inhibition percentage around 60% - 100%. Leaf extracts of Kina (Cinchona sp) and Keremi (Homalanthus populneus (Geiseler) showed the highest activity as wood-decay fungi inhibitor. The disclosure of the potential of bioinsecticides from some plants originating from Mount Merapi is very important before being lost due to deforestation and the Mount Merapi disaster. Thus, the potential bioinsecticide in these plants can increase its economic value as a substitute for synthetic insecticides that are friendly to the environment.
SIFAT FISIS KAYU BERKUALITAS RENDAH DARI RIAU SETELAH MELALUI PROSES PENGAWETAN POHON DENGAN TEKNIK BANDAGE DAN INFUS Sribudiani, Evi; Somadona, Sonia; Sulaeman, Rudianda; Syafrinal, Syafrinal; Yusuf, Sulaeman; Amin, Yusup; Tarmadi, Didi; Pramasari, Dwi Ajias; Damayanti, Ratih; Djarwanto, Djarwanto
Wahana Forestra: Jurnal Kehutanan Vol. 14 No. 2 (2019)
Publisher : Fakultas Kehutanan Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/forestra.v14i2.3515

Abstract

The potential of high-quality wood for various purposes over the past decade is very difficult to obtain. This is due to the high rate of doforestation and forest degradation, especially in Riau Province. Examples of the use of high-quality wood, especially in Riau Province, is as material for creating 'pathways' in the context of preserving track culture in the Kuantan Singingi Regency. The purpose of this study is to determine the physical properties of red balam wood and bintangur that grow in Riau before and after the preservation process, and determine the strength class of red balam wood and bintangur that grows in Riau. The research was carried out on the starur trees and red balam with a diameter of 34-38 cm, tree height 18-22 m. The tree sample comes from the Rumbio customary forest and the Minas Tahura KPHP Riau Province. Examination of physical properties using British standards in 1957. The results showed that based on specific gravity, the red balam wood and bintangur before preserved and included as strong class II. The average moisture content of each wood is 14-30%. The largest wood shrinkage development in each wood occurs at the base of the wood.
Larvicidal Activity of Brugmansia candida against Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Himmi, Setiawan Khoirul; Tarmadi, Didi; Meisyara, Dita; Fajar, Anugerah; Kartika, Titik; Guswenrivo, Ikhsan; Yusuf, Sulaeman
Biosaintifika: Journal of Biology & Biology Education Vol 12, No 3 (2020): December 2020
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v12i3.24634

Abstract

Mosquitoes are well known as vectors of hazardous diseases for human. Plant extracts can be used as an alternative for larval control due to they are a rich source of bioactive chemicals and safe for the environment. The present study investigated the larvicidal activity of crude extracts derived from leaf and flower of Brugmansia candida against the second larval instar of Aedes aegypti and Culex quinquefasciatus. The larval mortality was observed at 24 and 48 h exposure of both leaf and flower extracts, at the concentration of 100, 250, 500, and 1000 ppm. The 24 h exposure of both extracts at the concentration of 500 and 1000 ppm resulted in larval mortality rates were significantly lower than those of 48 h exposure. However, the mortality rate was not significantly different at the lower concentrations of crude extracts. The results also suggested that there was no significant difference in the larvicidal effect between leaf and flower extracts at 24 and 48 h exposure for all concentrations. The LC50 values at 48 h exposure for leaf extract were 789 and 791 ppm for Ae. aegypti and C. quinquefasciatus, respectively, whereas for flower extract were 772 and 780 ppm for Ae. aegypti and C. quinquefasciatus, respectively. Overall, B. candida showed larvicidal activity against Ae. aegypti and C. quinquefasciatus. This research contributes to new finding regarding the larvicidal activity of B. candida. This finding also supports the next study to develop B. candida as an alternative source for larval control agent.
Termites as Soil Engineers: A Study on Organic Carbon and Nutrient Dynamics using Baiting Techniques in Tropical Forest Ecosystem Febriani, Sri Rezeki; Ariyanto, Dwi Priyo; Cahyono, Ongko; Tarmadi, Didi; Wikantyoso, Bramantyo; Himmi, Setiawan Khoirul; Zaki, Muhamad Khoiru
HAYATI Journal of Biosciences Vol. 33 No. 2 (2026): March 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.2.394-403

Abstract

This study explores how termite activity affects soil chemistry, those are Soil Organic Matter (SOC) and nutrient dynamics in pine and mahagony forest of varying ages in the Bromo Forest, Indonesia. Termite activity was assessed using wooden poles placed in PVC pipes as bait, which also served for soil sampling. The results showed significant differences in SOC and total NPK levels among different pole damage classes in each forest. The highest values were observed in pole damage class 4. Termite-influenced soil, especially those affected by the genera Macrotermes sp., Microtermes sp., and Schedorhinotermes sp., showed the highest concentrations of SOC and NPK (4.97%, 0.51%, 15.42 mg/100 g, and 45.9 mg/100 g, respectively). The termite diversity index showed moderate diversity in all pine forests and low diversity in mahogany forests. The termite diversity index indicated moderate diversity in pine forests and low diversity in mahogany forests, likely influenced by bait type. These results demonstrate that termite activity significantly enhances soil nutrient content and can be used as an indicator of soil fertility status in tropical forest ecosystems.
Pengawet Alami Kayu Sengon dengan Ekstrak Umbi Gadung terhadap Rayap Kayu Kering: Natural Preservatives of Sengon Wood with Umbi Gadung Extract Against Drywood Termites Anggraini, Riana; Tarmadi, Didi; Ardiansyah, Ardiansyah; Ridho, Muhammad Rasyidur; Adelka, Yunia Frida; Fadia, Saviska Luqyana; Simanullang, Sumiati
Jurnal Silva Tropika Vol. 9 No. 2 (2025): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v9i2.49784

Abstract

ABSTRACT Sengon wood (A. chinensis) is a type of wood that has great potential as a source of industrial raw materials and holds significant economic value. However, sengon wood has low natural durability, classified as durability class IV–V, making it highly susceptible to attack by wood-destroying organisms such as termites. Therefore, wood preservation treatment is necessary to extend its service life. This study aims to analyze the interaction effect between the concentration of gadung tuber (D. hispida) extract with ethanol solvent and the soaking duration on the durability of sengon wood using the cold soaking method. The extract concentrations used were 1%, 3%, and 5%, and the soaking durations were 1 day, 2 days, and 3 days. The preserved samples were subjected to forced feeding tests using 50 healthy and active drywood termites (C. cynocephalus Light) on test specimens measuring 2.5 cm × 2.5 cm × 2 cm. The preservative performance parameters included absorption and retention, while the wood durability parameters included weight loss and termite mortality rate. The interaction between gadung tuber extract concentration and soaking duration significantly affected the retention and absorption values, while weight loss and termite mortality showed no significant effect. The highest retention and absorption values were obtained at a soaking duration of 3 days and a concentration of 5%, with average retention and absorption values of 0.028 g/cm³ and 0.438 g/cm³, respectively   Keywords: drywood termites, gadung tuber extract, sengon wood, wood preservation   ABSTRAK Kayu sengon (A.chinensis) merupakan kayu yang memiliki potensi sebagai penyedia bahan baku industri dan memiliki nilai ekonomi yang cukup besar. Kayu sengon memiliki tingkat keawetan yang rendah, yaitu kelas awet IV-V sehingga sangat mudah diserang oleh organisme perusak kayu seperti rayap. Perlu dilakukan proses pengawetan kayu untuk meningkatkan umur pakai kayu. Penelitian ini bertujuan untuk menganalisis pengaruh interaksi antara konsentrasi ekstrak umbi gadung (D. hipsida) dengan pelarut etanol dan lama perendaman terhadap keawetan kayu sengon dengan metode perendaman dingin. Konsentrasi ekstrak yang digunakan 1%, 3% dan 5% dan lama perendaman yang dilakukan 1 hari, 2 hari dan 3 hari. Pengawetan diumpan paksa dengan rayap kayu kering (C. cynocephalus Light) yang sehat dan aktif sebanyak 50 ekor pada contoh uji yang berukuran (2,5 cm x 2,5 cm x 2 cm). Parameter pengujian bahan pengawet terdiri dari absorbsi dan retensi, sedangkan parameter pengujian keawetan kayu terdiri dari penurunan bobot dan nilai mortalitas rayap kayu kering. Interaksi antara konsentrasi ekstrak umbi gadung dan lama perendaman terhadap keawetan kayu sengon memberikan pengaruh nyata terhadap nilai retensi dan absorbsi, sedangkan penurunan bobot dan mortalitas tidak memberikan pengaruh nyata. Interaksi retensi dan absorbsi nilai tertinggi diperoleh pada lama perendaman 3 hari dan konsentrasi 5%, dengan nilai rata-rata retensi 0,028 g/cm3 dan absorbsi 0,438 g/cm³.   Katakunci: ekstrak umbi gadung, kayu sengon, pengawetan kayu, rayap kayu kering
Co-Authors ARDIANSYAH ARDIANSYAH Deni Zulfiana Desyandri Desyandri Djarwanto Djarwanto Dwi Priyo Ariyanto Evi Sribudiani Fadia, Saviska Luqyana Fajar, Anugerah Febriani, Sri Rezeki Guswenrivo, Ikhsan Himmi, Setiawan Khoirul Ismayati, Maya Kartika, Titik Krishanti, Ni Putu Ratna Ayu Lestari, Anis Sri Meisyara, Dita Muhamad Khoiru Zaki Ongko Cahyono Pramasari, Dwi Ajias Riana Anggraini, Riana Ridho, Muhammad Rasyidur Rudianda Sulaeman Simanullang, Sumiati Somadona, Sonia Syafrinal, Syafrinal Wikantyoso, Bramantyo Yunia Frida Adelka Yusuf, Sulaeman Yusup AMIN Zulfitri, Apriwi