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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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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.
Pelatihan Pembuatan Pupuk Hayati pada Sistem Agroforestri berbasis Kopi di Desa Garahan, Jember, Jawa Timur Istikorini, Yunik; Firmansyah, Muhammad Alam; Rusniarsyah, Lufthi; Shodiq, Ikhwan; Azzahra, Tiska Aulia; Latifah, Idelia
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 9 No. 2 (2023): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.9.2.191-198

Abstract

The productivity of coffee plants on the most cultivated land in Garahan Village decreased. This decline is thought to be caused by, among others, climate change, land degradation and the presence of pests and diseases in coffee plants. This training aims to introduce pests and diseases in coffee-based agroforestry to farmers and develop environmentally friendly biofertilizers. This activity begins with a pre-test, socialization and training and ends post-test. Based on the survey and direct observation, coffee plants found upas fungal diseases, root diseases, and stem borer pests. The agroforestry system applied is complex and straightforward agroforestry. In complex agroforestry, coffee plants are grown with various other crops, such as pepper, vanilla, leucaena, taro, banana, gamal, and mahogany. Simple agroforestry consists of coffee land planted with single-shade crops such as leucaena and gamal or a combination of Leucaena and pine. The training results showed an increased farmer's better understanding of coffee pests and diseases, the benefits of agroforestry, and the manufacture of biofertilizers. The biofertilizer developed is expected to increase the productivity of coffee plants.
Co-Authors Ahmad Faqih Alam, Ilham Fatkhy Ardian, Dava Putra Arum Sekar Wulandari Azzahra, Tiska Aulia Budiman, Thurfah Chaerul H, Rachmad DIMAS ANDRIANTO Febrina Keumala, Cut Fiqri, Muhammad Fitrianingrum Kurniawati, Fitrianingrum Fortunata, Maura Rezky H, Rachmad Chaerul Irdika Mansur Islami, Naluri Siyasah Latifah, Idelia Lufthi Rusniarsyah, Lufthi Maulina, Alaysha Mubin, Nadzirum 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 Shodiq, Ikhwan Sutanto, Vallari Kalea Ananda Ulfah Juniarti Siregar Wahyu Krisna Yus Septiawati