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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management
Sergian Juniarso
Department of Research and Development, PT Musi Hutan Persada, Subanjeriji, Jln. PT TEL-Rambang Dangku, Muara Enim, Indonesia 31172
Agriculture, Biological Sciences & Forestry

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Fertilization Effects on Early Growth, Aboveground Biomass, Carbon Storage, and Leaf Characteristics of Eucalyptus pellita F. Muell. in South Sumatera Pandu Yudha Adi Putra Wirabuana; Ronggo Sadono; Sergian Juniarso
Jurnal Manajemen Hutan Tropika Vol. 25 No. 3 (2019)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (241.293 KB) | DOI: 10.7226/jtfm.25.3.154

Abstract

Fertilization is one of the nutrient management efforts that play an important role in improving the productivity of plantation forests. It was conducted to provide adequate nutrients for the plant at the initial growth period when the availability of soil nutrients is very limited. The optimum dose of fertilization for each plant is different depending on its requirement, climate, and soil properties. This study investigated the influence of fertilization on early growth, aboveground biomass, carbon storage, and leaf characteristics in Eucalyptus pellita in the sixth months after field establishment. An experiment comprising four treatments of fertilization, i.e., 0, 75, 133, and 167 kg ha -1 of triple superphosphate 46% P2O5 was set up using randomized complete block design with five replications. Four indicators were selected to evaluate the early growth of E. pellita, namely survival rate, height, the collar of diameter, and crown projection area. Aboveground biomass and carbon storage of E. pellita were estimated in each component, covering stem, bark, branches, and leaves. The leaf characteristics of E. pellita were described by individual leaf area, individual leaf dry weight, specific leaf area, and leaf area index. Results showed that the different treatment of fertilization did not have a meaningful effect on survival rate, individual leaf area, and specific leaf area. The treatments presented a substantial effect on other indicators such as height, diameter, crown projection area, aboveground biomass, carbon storage, individual leaf dry weight, and leaf area index. Despite the fact that the highest mean of height and collar of diameter were observed in the dose of 167 kg ha -1, the greatest average of aboveground biomass and carbon storage were noted in the rate of 133 kg ha -1. Nevertheless, this study did not find a highly different performance of E. pellita between both treatments statistically.
Interaction of Fertilization and Weed Control Influences on Growth, Biomass, and Carbon in Eucalyptus Hybrid (E. pellita × E. brassiana) Pandu Yudha Adi Putra Wirabuana; Ronggo Sadono; Sergian Juniarso; Fahmi Idris
Jurnal Manajemen Hutan Tropika Vol. 26 No. 2 (2020)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.26.2.144

Abstract

Fertilization and weed control are regularly conducted as the main silvicultural prescriptions in the eucalyptus plantation forest. However, the interaction effects of both treatments on eucalyptus performance are still not deeply understood, even though these treatments require high investment. This circumstance may potentially inhibit the managers to formulate more efficient maintenance strategy for increasing stand productivity. This study examined the interaction effects of fertilization and weed control on growth, biomass, and carbon storage in eucalyptus hybrid (E. pellita x E. brassiana). Results demonstrated that without both treatments, the average stand volume only reached 37.9 m3 ha -1 with the mean biomass and carbon storage approached 25.4 and 12.7 Mg ha -1, respectively. In contrast, the use of both treatments simultaneously improved the mean volume around 60.4 m3 ha -1 with the average biomass and carbon storage closed to 37.6 and 18.8 Mg ha -1. Furthermore, the development of eucalyptus hybrid using fertilization without weed control only gained the mean wood production approximately 58.7 m3 ha -1 while the practice of weed control without fertilization only resulted the average volume nearly 43.7 m3 ha -1. These facts indicated fertilization exhibited higher influence than weed control on the performance of eucalyptus hybrid.
Co-Authors Fahmi Idris Pandu Yudha Adi Putra Wirabuana Pandu Yudha Adi Putra Wirabuana Ronggo Sadono