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All Journal Jurnal Silvikultur Tropika (JST) Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) 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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Pelatihan Pembuatan Pupuk Hayati di Desa Gondel, Kecamatan Kedungtuban, Kabupaten Blora, Jawa Tengah Firmansyah, Muhammad Alam; Kurniawati, Fitrianingrum; Mubin, Nadzirum; Istikorini, Yunik
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 3 (2024): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.10.3.305-314

Abstract

The rice productivity in Gondel Village, Kedungtuban District, Blora Regency, Central Java, has declined. Factors such as attacks by plant pests and diseases (OPT), climate change (DPI) impact, and decreasing soil quality are the leading causes of crop failure. This training aims to enhance the understanding and skills of Gondel Village farmers in making biofertilizers and introducing environmentally friendly pest and disease control methods. The activity involved 40 farmers from 8 farmer groups (Gemah Ripah, Margo Mulyo, Ngudi Makmur, Sido Dadi, Sido Makmur, Tambah Makmur, Tambah Rizki, and Sri Mulyo), with each group represented by five farmers. The training methods included analysis of soil chemicals, socialization, practical propagation of Trichoderma sp. on rice media, and biofertilizer production. Pre-test and post-tests were conducted to assess the improvement in farmers' knowledge. Trichoderma biofertilizer was formulated using carriers such as a) Manure and b) Compost, zeolite, and humic acid. The results of the soil chemical properties analysis showed that farmers' use of chemical fertilizers was very intensive, resulting in very high levels of phosphorus (P) and calcium (Ca) and high levels of potassium (K), magnesium (Mg), and cation exchange capacity (KTK). Evaluation results indicated that the training significantly improved the farmers' knowledge of biofertilizer production in theory and practice. However, some farmers still need further guidance on the propagation of the biological agent Trichoderma sp.
Evaluation of Leaf Spot and Blight Diseases in Mahogany (Swietenia mahagoni) Seedlings in Rumpin Nursery, Bogor Regency, Indonesia Islami, Naluri Siyasah; Istikorini, Yunik; Lelana, Neo Endra; Wulandari, Arum Sekar
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 16 No 1 (2026): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.16.1.25

Abstract

Seedling propagation in nurseries often faces problems such as disease attack. Leaf spot and blight are the main threats that usually hamper the growth of small-leaf mahogany (Swietenia mahagoni (L.) Jacq.) seedlings in the nursery. This study aims to determine the incidence and severity of disease, factors affecting the development of leaf spot and blight on small-leaf mahogany seedlings, and identify the causative pathogen. The research method included observations of disease incidence and severity in two sample plots representing the nursery with a sampling intensity of 10%. Leaf samples showing disease symptoms were isolated and tested for Koch’s Postulates. The result showed that the incidence of leaf spot and blight reached 95,44% and the disease severity was lower (44,72%). The environmental conditions at Rumpin Nursery, including high rainfall and humidity, as well as moderate temperatures (22-30 °C), favored the spread of disease. There were four types of fungal pathogens of leaf spot and blight on small-leaf mahogany seedlings, namely Pestalotiopsis sp., Rhizoctonia sp., Colletotrichum sp., and Bipolaris sp., with an incubation period of 1-2 days. This incubation period indicates rapid infectious ability under favorable environmental conditions.
RESPONS PERKECAMBAHAN BENIH KOPSIA (Kopsia arborea Blume) PADA TINGKAT KEMATANGAN BUAH YANG BERBEDA DAN APLIKASI RIZOBAKTERI H, Rachmad Chaerul; Chaerul H, Rachmad; Wulandari, Arum Sekar; Istikorini, Yunik
Journal of Tropical Silviculture Vol. 16 No. 03 (2025): 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.16.03.176-185

Abstract

Kopsia plants are known secondary metabolites. While extensive research has been conducted on the secondary metabolites of kopsia, studies on its cultivation and propagation techniques remain limited. This study aims to analyze the effects of fruit maturity level and rhizobacteria application on  kopsia seed germination. The treatment tested in this study included different fruit maturity levels (immature, semi-mature, and mature) and rhizobacteria application (0 g and 5 g). All mature fruits germinated successfully (68%), whereas immature and semi-mature fruits showed no germination at all (0%). The absence of germination in immature and semi-mature fuirts was due to the physiologically immature embryos. Rhizobacteria were found to accelerate seed germination in mature fruits, and the resulting kopsia seedlings exhibited better growth. Overall, kopsia seed germination occurred only in mature fruits. Rhizobacteria application helped balance shoot and root development.
Co-Authors Ahmad Faqih Alam, Ilham Fatkhy Ardian, Dava Putra Arum Sekar Wulandari Budiman, Thurfah Chaerul H, Rachmad DIMAS ANDRIANTO Febrina Keumala, Cut Fiqri, Muhammad Fitrianingrum Kurniawati, Fitrianingrum Fortunata, Maura Rezky H, Rachmad Chaerul Idelia Latifah Ikhwan Shodiq Irdika Mansur Islami, Naluri Siyasah Lufthi Rusniarsyah Maulina, Alaysha Mubin, Nadzirum Muhammad Alam Firmansyah Muhammad Alam Firmansyah Navizan, Fadhli Zhafran Neo Endra Lelana, Neo Endra 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