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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management MEDIA KONSERVASI Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Belantara Jurnal Biologi Tropis Jurnal Silva Tropika
Hardiyanti, Rizky Ayu
Faculty Of Forestry, University Of Jambi Campus Pinang Masak, Jambi-Muara Bulian Main Road, KM. 15 Mendalo Darat-Jambi, Indonesia 36361
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics

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OPTIMIZING EUCALYPTUS PELLITA SEEDLING GROWTH THROUGH NPK FERTILIZER AND LIGHT INTENSITY REGULATION Ratna Puri, Suci; Mahub, Itang Ahmad; Rumondang, Jenny; Handayani, Rajjitha; Hardiyanti, Rizky Ayu; Aulia, Ahmad Khoiril
Jurnal Belantara Vol 8 No 2 (2025)
Publisher : Forestry Study Program University Of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbl.v8i2.1121

Abstract

Eucalyptus pellita is a type of fast-growing plant (fast-growing species). The advantage of this plant is that it is a short rotation or fast-growing plant, with fewer disease attacks. The benefits of the plant are quite numerous and it has high economic value. Considering that the optimal light intensity for eucalyptus seedling growth is not yet known, it is necessary to test the effects of various light intensities using shade in the form of paranet. This research was conducted using a factorial Completely Randomized Design (CRD) with a split-plot experimental pattern consisting of 4 treatment levels. Each treatment was repeated 3 times, The results of the study on the effect of NPK fertilizer and light intensity on the growth of eucalyptus seedlings indicate that the interaction of 5g NPK fertilizer per seedling and 100% light intensity is a better treatment compared to other treatments. This is suspected because eucalyptus is a plant that requires sufficient light intensity to experience the growth of eucalyptus seedlings. The growth of eucalyptus seedlings is influenced by light intensity, which supports the increase in height, stem diameter, and number of leaves. Based on the results of this study, it can be concluded that the treatment with NPK fertilizer and light intensity has a significant effect on increasing stem diameter. In the treatment P2C0, which is NPK fertilizer 7g/seedling and light intensity 100%, there is no significant difference compared to treatments P1C0 and P3C0, which are NPK fertilizers 5g and 9g/seedling at 100% light intensity.
Shade and NPK Effects on Calliandra and Sengon Seedling Growth Differences Rumondang, Jenny; Ratna Puri, Suci; Rif’atunaudina, Ria; Handayani, Rajjitha; Hardiyanti, Rizky Ayu; Dinanty, Fawwaz
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i1.8763

Abstract

Calliandra (Calliandra sp.) is a shrub with multiple benefits, including its use as firewood and as a high-protein livestock feed. Sengon (Paraserianthes falcataria) is a fast-growing tree species widely cultivated to support the timber industry. To enhance seedling growth and productivity, environmental manipulation through shading and fertilization is necessary. This study aims to evaluate the effects of shading and NPK fertilizer doses on the growth of Calliandra calothyrsus and Sengon seedlings in the context of industrial forest plantation management. Using a completely randomized design, this study tested four shading levels (no shading, 25%, 50%, and 75%) and four NPK fertilizer doses (0, 1, 2, and 3 g per seedling). Each treatment was repeated twice, resulting in a total of 248 seedlings per species. The observed variables included height, diameter, and leaf count. The results showed that Calliandra exhibited no significant differences in height growth across shading levels. However, the best growth was observed under 25% shading, with a height increase of 11.84 cm and a diameter of 1.55 mm, and at an NPK dose of 2 g, with a height of 10.75 cm and a diameter of 1.54 mm. Meanwhile, Sengon showed the best height growth under 75% shading with an NPK dose of 1 g per seedling. The optimal diameter growth for Calliandra was achieved under 25% shading with an NPK dose of 1 g, while Sengon exhibited the best diameter growth without shading and with an NPK dose of 3 g.
Co-Authors Ade Adriadi Ade Andriani Aulia, Ahmad Khoiril Bambang Irawan Bambang Irawan Dinanty, Fawwaz Gindo Tampubolon Hamzah, Hamzah Jenny Rumondang Jenny Rumondang Mahub, Itang Ahmad Muryunika, Rince Nofianti, Zera Olivia Nursanti Nursanti Puri, Suci Ratna Rajjitha Handayani Ratna Puri, Suci Ria Rif’atunidaudina Richard Robintang Parulian Napitupulu Rif’atunaudina, Ria Rike Puspitasari Tamin Rike Puspitasari Tamin Sihombing, Willy Sahata Suci Ratna Puri Utari, Indah Tri Wahyu Nazri Yandi