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All Journal Jurnal Hutan Tropika Jurnal Wana Tropika Jurnal Wana Tropika
Karti Rahayu Kusumaningsih
Fakultas Kehutanan Institut Pertanian Stiper Yogyakarta
Agriculture, Biological Sciences & Forestry Environmental Science

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Analisis Vegetasi Penyusun Asmin Tropical Rain Forest Conservation 2, PT. Asmin Bara Bronang, Kapuas, Kalimantan Tengah Suwito Setyo Budi; Agus Prijono; Karti Rahayu Kusumaningsih
Jurnal Wana Tropika Vol 13 No 1 (2023): Mei
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i1.600

Abstract

Asmin Tropical Rain Forest Conservation 2 is a tropical natural forest which is a conservation area of ​​PT Asmin Bronang Kapuas, Central Kalimantan. The designation of new areas was carried out in 2018 and there was no research in the area that required data collection on the types of constituents of the area. The purposes of this research were to determine species composition, species diversity index, species evenness index, species richness index, and species dominance index. The method used in this study was collecting data on plants in area of ​​54.6 hectares with a sampling intensity of 1% using the Uniform Systematic Distribution Sampling with Random Start pattern. There are   14 plots in the form of nested samples with designations for 4 levels of plants (seedlings, saplings, poles, and trees). Results of the research showed that vegetation species composition was dominated by Shorea smithiana (Mahambung) of the Dipterocarpaceae family. Shorea parvifolia (Red Meranti), Euzyderoxylon zwageri (Ulin), Shorea smithiana (Mahambung), Mezzetia parviflora (Pisang-pisang), Syzygium spp. (Jambu-jambu), and Memecylon sumatrense (Kamasulan) are the 6 species that have the best regeneration rate, which are found at all plant levels. The highest IVI was Shorea smithiana (Mahambung) at the seedling was 46.55, pole 55.68, and tree 32.02 levels. At the sapling level, the highest IVI was Baccaurea bracteata Muell (Rambai forest) was 28.76. The species diversity index from seedling to pole level was moderate. At the tree level, the species diversity index was high (3.23). Species evenness index from seedling to tree level including height (0.82-0.92). The species richness index from seedling to pole was moderate. At the tree level, the species diversity index was high (7.45). The species dominance index of all levels was included in the low category (0.05-0.15).
Pemanfaatan Beberapa Jenis Tanaman Berpotensi Pestisida untuk Mengendalikan Hama Kutu Putih pada Bibit Sengon (Falcataria mollucana) Karti Rahayu Kusumaningsih; Agus Prijono; Hastanto Bowo Woesono; Mentari Kelana Devi
HUTAN TROPIKA Vol 18 No 1 (2023): Volume 18 Nomor 1 Tahun 2023
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v18i1.8198

Abstract

One problem of cultivation of Falcataria mollucana seedlings in nursery is attack of Pseudococcus calceolariae pest. Attack of that pests cause the growth of seedlings hampered and finally cause death seedlings. Several plants founded in the field, for examples Swietenia macrophylla, Azadirachta indica, Morinda citrifolia and Carica papaya have bioactive compounds that can be used as botanical pesticide. The purpose of this research is to know type of leaf extract against effectivity of P. calceolariae pest control to F. mollucana seedlings based on decrease of incidence and severity  against P. calceolariae attack. Results of the research showed that leaf extract of  S. macrophylla, A. indica, M. citrifolia and C. papaya were effective to control P. calceolariae pest  at F. mollucana seedlings. A. indica leaf extract gived decrease of incidence and severity against P. calceolariae attack higher than others leaf extract. i.e 80,13% and 57,69%.
Uji In-Vitro Ekstrak Daun Tembakau (Nicotiana tabacum) dan Alamanda (Allamanda cathartica) sebagai Pengendali Hama Helopeltis bradyi pada Bibit Eucalyptus sp. Andreas Fernandez; Karti Rahayu Kusumaningsih
Jurnal Wana Tropika Vol 16 No 1 (2026): MEI
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v16i1.2340

Abstract

Helopeltis bradyi is an important pest in Eucalyptus sp. seedlings that cause damage and seedling death. Pest control that is usually carried out at HTI (Industrial Forest Plantations) is by using chemical pesticides that have the potential to have a negative impact on the environment. Therefore, an alternative pesticide is needed for the use of  botanical pesticides. The purpose of this study is to know the effect of botanical pesticide types and solution formulas on the mortality and severity of H. bradyi pest attack on Eucalyptus sp. seedlings. The research used a Randomized Complete Block Design with two treatment factors, namely the type of botanical pesticide (tobacco and allamanda leaf extract) and the solution formula (10%, 20% and 30%). The observed parameters included pest mortality and severity of H. bradyi pest attack on seedlings with in-vitro test. Results of the research showed that interaction between the type of botanical pesticide in the form of Nicotiana tabacum and Allamanda cathartica leaf extract with 30% solution formula produced a higher mortality of H. bradyi pests with 100% pest mortality. Nicotiana tabacum leaf extract with 30% formula produce 0,00% pest attack severity.
FRONT MATTER WANA TROPIKA VOLUME 16 NOMOR 1 MEI 2026 Karti Rahayu Kusumaningsih
Jurnal Wana Tropika Vol 16 No 1 (2026): MEI
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

FRONT MATTER WANA TROPIKA VOLUME 16 NOMOR 1 MEI 2026
Co-Authors Agus Prijono Andreas Fernandez Hastanto Bowo Woesono Mentari Kelana Devi Suwito Setyo Budi