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All Journal Jurnal Silvikultur Tropika (JST) Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Hutan Tropika Jurnal Pusat Inovasi Masyarakat Jurnal Sylva Lestari
Istikorini, Yunik
IPB University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology Social Sciences

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Journal : Jurnal Silvikultur Tropika (JST)

 1 
Potensi Cendawan Endofit pada Tanaman Binahong (Anredera cordifolia (Ten.) Steenis) untuk Mengendalikan Botryodiplodia theobromae Pat. Penyebab Mati Pucuk pada Bibit Jabon (Anthocephalus cadamba (Roxb.) Miq) Yunik Istikorini
Jurnal Silvikultur Tropika Vol. 10 No. 2 (2019): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.10.2.114-118

Abstract

Endophytic fungi provides potential advantages as biocontrol agents in the plant. Binahong (Anredera cordifolia) is a medicinal plant which can potentially overcome many kinds of diseases. The dieback disease is caused by Botryodiplodia theobromae Pat. that may lead the death of the host. The objective of this research was to analyze the potency of endophytic fungi from binahong leaves to control the fungus B. theobromae as causal agent of dieback disease on jabon (Anthocepalus cadamba). The isolates of endophytic fungi from binahong used were bnh1.1, bnh1.2, bnh1.3, bnh4.2, bnh4.5, bnh3.3 and bnh3.4. The antifungal effect of endophytic fungi againts colony growth of virulent B. theobromae were tested in vitro. The results showed that all endophytic fungus (7 isolates) inhibited the colony development of B. theobromae ranging from 28.52%-52.22%. Treatment with endophytic fungi bnh4.5 and bnh4.2 had protected jabon from virulent B. theobromae. It has been expressed by the delay of the incubation period and the decreasing of disease severity (respectively 33.34% and 40.84%. Key words: Anredera cordifolia, Botryodiplodia theobromae, disease incidence, endophytic fungi
Effect of Endophytic Bacteria Inoculation and Eco-enzyme on Kayu Kuku (Pericopsis mooniana Thw.) Seedlings Growth Arum Sekar Wulandari; Yunik Istikorini; Yus Septiawati
Jurnal Silvikultur Tropika Vol 14 No 01 (2023): Jurnal Silvikutur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.14.01.15-24

Abstract

Improving the physical quality of kayu kuku seedlings can be done by applying endophytic bacteria and ec-enzymes. The aims of this study were to examine (1) the effect of inoculation of endophytic bacteria on the germination of kuku wood seeds, and (2) the effect of inoculation and application of eco-enzymes on the growth of kuku wood seedlings. The endophytic bacteria were isolated from the shoot of Shorea balangeran plant with the codes SBP 1, SBP 2, and SBP 19. Bacterial application was conducted on seeds and seedlings, while eco-enzyme application was only conducted on kayu kuku seedlings. The results of the research at the seed level showed that inoculation of the endophytic bacteria SBP 19 could accelerate the germination rate of kayu kuku seeds. At the seedling level, inoculation of endophytic bacteria SBP 1, SBP 2, SBP 19 and application of eco-enzymes had no significant effect on height, diameter, number of new leaves, total fresh weight and total dry weight of kayu kuku seedlings. The shoot root ratio of kayu kuku seedlings ranged from 2.66-5.04 and the seedlings quality index ranged from 0.41-0.93, indicating that the seedlings were ready to be transplanted into the field. In general, inoculation of endophytic bacteria had a significant effect on kayu kuku seed germination, but had not been able to increase the growth of kayu kuku seedlings during the 14 weeks of observation. Keywords: Pericopsis mooniana Thw., seed dormancy, seed germination, seedling quality index, shoot root ratio
Potential Test of Rizosphere Microbes as Biological Controls that Cause Plant Diseases Istikorini, Yunik; Budiman, Thurfah
Journal of Tropical Silviculture Vol. 14 No. 03 (2023): Jurnal Silvikutur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.14.03.242-249

Abstract

Pengendalian hayati merupakan alternatif untuk mengurangi penggunaan pestisida karena dapat menekan pertumbuhan patogen tanaman tanpa berdampak negatif terhadap lingkungan. Tujuan penelitian ini adalah menguji efektivitas mikroba rizosfer sebagai pengendali hayati penyebab penyakit tanaman. Pada penelitian ini menggunakan tiga mikroba rizosfer (Trichoderma sp., Gliocladium sp., Bacillus sp.) dan tiga cendawan patogen uji (Rhizoctonia sp., Sclerotium sp., Botryodiplodia sp.). Penelitian terdiri dari tiga percobaan: (1) uji antagonis secara in vitro, (2) uji metabolit sekunder, dan (3) uji pertumbuhan pada benih sengon (in vivo). Parameter yang diukur meliputi persentase penghambatan, daya kecambah, kecepatan tumbuh, kejadian penyakit, dan intensitas penyakit. Cendawan Trichoderma sp. dan Gliocladium sp. mampu menghambat pertumbuhan cendawan patogen Sclerotium sp., Rhizoctonia sp., dan Botryodiplodia sp. berkisar antara 61,82% hingga 80,00%. Metabolit sekunder cendawan Gliocladium sp. lebih efektif menghambat pertumbuhan miselia cendawan patogen Rhizoctonia sp., Sclerotium sp., dan Botryodiplodia sp. dibanding cendawan Trichoderma sp. dengan nilai penghambatan berturut-turut asebesar 71,13%, 33,83%, 23,58%. Gliocladium sp., Trichoderma sp., dan Bacillus sp. mampu menekan kejadian penyakit (14,29%, 12,38%, dan 15,24%) serta intensitas serangan damping-off yang disebabkan Rhizoctonia sp. (8,91%, 8,57%, dan 9,43%). Hasil ini menunjukkan agensia hayati Trichoderma sp., Gliocladium sp., Bacillus sp. berpotensi mengendalikan penyakit tanaman. Kata kunci: agensia hayati, damping-off, metabolit sekunder, Trichoderma
Application of Manure and Eco-Enzymes on Eucalyptus in Clay Mines at PT. Solusi Bangun Indonesia Istikorini, Yunik; Mansur, Irdika; Padilah, Sinta Nur
Journal of Tropical Silviculture Vol. 15 No. 03 (2024): Jurnal Silvikutur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.15.03.228-233

Abstract

Open-pit clay mining has the potential to disrupt the environmental ecosystem. Reclamation is carried out to aid in the recovery of areas disturbed by mining processes. This study aims to determine the effect of applying manure and eco-enzymes on the growth of eucalyptus in post-mining clay land and to identify the optimal combination dosage of manure and eco-enzymes to enhance eucalyptus growth in these reclaimed areas. This study used Randomized Block Design with two factors: manure (0, 1, 1,5 kg) and eco-enzymes (0, 100, 150 ml). The results show that the interaction between manure and eco-enzymes had a significant effect on plant height and canopy thickness, although both treatments did not significantly affect plant diameter and canopy diameter. The best dosage for improving eucalyptus growth in post-mining clay land was 150 ml of eco-enzymes. Keywords: clay mining, eco-enzymes, eucalyptus, manure, reclamation
Viabilitas Benih Mindi (Melia Azedarach L.) Melalui Uji Daya Hantar Listrik Febrina Keumala, Cut; Sekar Wulandari, Arum; Istikorini, Yunik
Journal of Tropical Silviculture Vol. 16 No. 01 (2025): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.16.1.28-32

Abstract

Penyimpanan benih dalam jangka waktu tertentu dapat memengaruhi viabilitas benih. Tujuan penelitian ini adalah menganalisis pengaruh lama penyimpanan benih terhadap viabilitas benih mindi. Metode yang digunakan adalah uji daya hantar listrik atau electrical conductivity (EC) terhadap air rendaman benih yang telah disimpan selama 0, 2, 4, 6, dan 8 bulan. Pengukuran nilai konduktivitas listrik dilakukan menggunakan alat conductivity meter. Hasil penelitian menunjukkan bahwa lama penyimpanan memengaruhi nilai EC benih mindi. Nilai EC terendah adalah 15,63 µS/cm pada penyimpanan 0 bulan dan nilai EC tertinggi adalah 31,87 µS/cm pada penyimpanan 8 bulan. Lama penyimpanan memiliki korelasi positif terhadap nilai EC sebesar 0,75. Nilai EC yang tinggi menunjukkan banyaknya perembesan cairan sel yang keluar dari benih sehingga menurunkan kapasitas perkecambahan benihnya. Nilai EC memiliki korelasi negatif terhadap viabilitas benih. Secara umum, semakin lama benih disimpan, maka viabilitas benih semakin menurun.
Co-Authors Ahmad Faqih Alam, Ilham Fatkhy Ardian, Dava Putra Arum Sekar Wulandari Budiman, Thurfah DIMAS ANDRIANTO Febrina Keumala, Cut Fiqri, Muhammad Fitrianingrum Kurniawati, Fitrianingrum Fortunata, Maura Rezky Idelia Latifah Ikhwan Shodiq Irdika Mansur Lufthi Rusniarsyah Maulina, Alaysha Mubin, Nadzirum Muhammad Alam Firmansyah Muhammad Alam Firmansyah Navizan, Fadhli Zhafran Noor Farikhah Haneda Okta Yulia Sari Padilah, Sinta Nur Rohmah, Sabila Nur Sari, Okta Yulia Sutanto, Vallari Kalea Ananda Tiska Aulia Azzahra Ulfah Juniarti Siregar Wahyu Krisna Yus Septiawati