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All Journal JURNAL PEMULIAAN TANAMAN HUTAN JURNAL PERBENIHAN TANAMAN HUTAN
Dwi Kartikaningtyas
Balai Besar Penelitian dan Pengembangan Bioteknologi dan Pemuliaan Tanaman Hutan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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VOLUME TEGAKAN Acacia mangium PADA UJI PEROLEHAN GENETIK DENGAN KERAPATAN TEGAKAN TINGGI Dwi Kartikaningtyas; Teguh Setyaji; Arif Nirsatmanto
Jurnal Pemuliaan Tanaman Hutan Vol 11, No 2 (2017): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.345 KB) | DOI: 10.20886/jpth.2017.11.2.113-122

Abstract

High initial stand density is commonly practiced in forest plantations subjected to produce high quality logs through successive thinnings. In this study, genetically improved seed of Acacia mangium was verified in genetic gain trial using high initial stand density. The trial was established in Jonggol, West Java and laid out in randomized complete block design with high initial stand density of 2500 trees/ha or in spacing of 2 x 2 m. The improved seeds tested in the trial were collected from four seedling seed orchards (SSOs). As a control, unimproved seeds from seed production area (SPA) were also planted together in the trial. The assessment of stand volume productivity was periodically conducted at two, three and four years of age. The results of study showed that the improved seeds from the four SSOs out performed the unimproved one. However, the significant difference among the seed sources was initially found at the four years of age. The average stand volumes of improved seed were 58.56m3/ha, 94.87m3/ha and 163.8m3/ha for two, three, and four years of age, respectively. The superiority of improved seed over the unimproved one ranged from 23%-36% (two years), 6%-30% (three years) and 2%-22% (four years). The four SSOs showed different behaviours in response to high stand density. Improved seed from SSOs with higher selection intensity was likely to be more tolerant to high stand density.
The Effectivity of Planting Media and Fertilizer in Sprouting Ability of Kess (Lophostemon suaveolens (Sol.ex Gaertn.) Peter G.Wilson & J.T. Waterh) Stool Plant) Dwi Kartikaningtyas; Teguh Setyaji; NFN Surip
Jurnal Perbenihan Tanaman Hutan Vol 7, No 2 (2019): Jurnal Perbenihan Tanaman Hutan
Publisher : Forest Tree Seed Technology Research & Development Center (FTSTRDC)/ Balai Penelitian dan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (213.845 KB) | DOI: 10.20886/bptpth.2019.7.2.67-76

Abstract

The need for large-scale seedlings is needed to support the speed-up of land rehabilitation among others on peatlands. To reach the needs, appropriate techniques are needed, as well as the appropriate of stool plant as a provider of vegetative propagation genetic material. The purpose of the study was to determine the influence of the planting media and the application of various types of fertilizer on Kess (Lophostemon suaveolens) stool plant in shoots growth and shoots length. The research was designed by using the Completely Randomized Design (CRD) with 2 x 3 factorial design on two types of planting media (sand, cocopeat) and three types of fertilizer (slow release , compound and leaf fertilizer). The results showed that the planting media gave a real effect to the shoots growth and increasing of shoots length, however the application of fertilizer only had an effect on shoots growth. The combination of sand medium and controlled release fertilizer has more effective compared to other combinations.
Co-Authors Arif Nirsatmanto NFN Surip Teguh Setyaji Teguh Setyaji