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All Journal JURNAL PERBENIHAN TANAMAN HUTAN
Nurmawati Siregar
Balai Penelitian dan Pengembangan Teknologi Perbenihan Tanaman Hutan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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The Responses of Mulch Closure on the Germination of Mindi (Melia azedarach Linn.) Nurmawati Siregar
Jurnal Perbenihan Tanaman Hutan Vol 5, No 1 (2017): 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 (516.317 KB) | DOI: 10.20886/bptpth.2017.5.1.61-70

Abstract

One of the factors that determine the successful of the development of mindi is the availability of seedling. The seedlings can be propagated generatively by using seeds, however there is a problem related to the hardness of the testa that make it difficult to germinate, so it needs environment condition treatments to get optimal germination, one of this is mulching. The use mulch possibly get the improvement of temperature, humidity, infiltration and evapotranspiration. The study is aimed to determine the effect of mulch and to find out the best mulch type on the germination of mindi (Melia azedarach Linn.) seed. Randomized completely design was employed that arranged factorially, consisted of (A) mulch types factor and mulch thicknesses factor (B). There were 5 (five) types of mulch treatment i.e rice straws, transparent plastics, dark plastics, zeolite and without mulch. The thicknesses of mulch consisted of one layer and two layers of mulch. Germination capacity, germination speed and growth simultaneously were observed. The results showed, mulching effect on germination mindi the best type of mulch is black or transparent plastic mulch while the thickness of the mulch does not affect the germination. Mindi seed capable of germination in the dark and light conditions on the conditions of temperature and humidity high temperatures.
The Influence of Pruning Shoot Age on the Growth of Hopea odorata Roxb. Cutting Nurmawati Siregar; Kurniawati Purwaka Putri
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 (210.933 KB) | DOI: 10.20886/bptpth.2019.7.2.77-85

Abstract

Propagation of Hopea odorata Roxb. could be carried out through the vegetative methods by cuttings. Material cuttings with a high juvenility are obtained by pruning a stock plant. Information on shoot age after pruning as material cuttings were still limited. The purpose of this study was to determine the effect of shoot age after pruning on the successful propagation of H. odorata cuttings. The study design was a randomized block design with shoot age treatments of 3, 4, 5 and 6 months. Each treatment was placed in 5 blocks and each treatment consisted of 20 cuttings. Growth response of cuttings observed was cutting survival percentage, shoot height, root length, root dry weight, shoot dry weight, carbon, and nitrogen content. The results showed that the age of pruning shoots had a significant effect on all measured growth response of cuttings. H. odorata cuttings from orthotropic shoots aged 4 and 5 months after pruning showed cutting survival percentage, shoot height, root length, shoot and root dry weight were higher than shoots aged 3 and 6 months after pruning. The age of 6 months pruning shoots showed the highest C/N ratio (18.14) and carbon content (47.48 percent), but but the lowest nitrogen content (2.62 percent). The percentage of woody on shoots aged 4 and 5 months after pruning was 50%, while almost all of the cuttings on shoots of the age of 6 months were woody. The best propagation material for H. odorata cuttings was orthotropic shoots aged 5 months after pruning, because of the high cuttings survival percentage (94.18 percent). In addition C/N ratio from shoot aged 5 months (15,11) was higher than from shoot aged 4 months (13,14).
PENGARUH BAHAN SETEK DAN ZAT PENGATUR TUMBUH TERHADAP KEBERHASILAN SETEK PUCUK MALAPARI (Pongamia pinnata) Rina Kurniaty; Kurniawati Purwaka Putri; Nurmawati Siregar
Jurnal Perbenihan Tanaman Hutan Vol 4, No 1 (2016): 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 (498.208 KB) | DOI: 10.20886/bptpth.2016.4.1.1-8

Abstract

Pertumbuhan setek dipengaruhi oleh faktor bahan tanaman (genetik) dan faktor lingkungan. Faktor bahan tanaman meliputi kandungan cadangan makanan, hormon endogen dalam jaringan setek, umur pohon induk, dan tingkat juvenilitas. Tujuan penelitian untuk mengetahui pengaruh asal bahan setek dan zat pengatur tumbuh terhadap keberhasilan perbanyakan vegetatif setek malapari. Rancangan percobaan yang digunakan adalah rancangan acak lengkap (RAL) pola faktorial dengan dua faktor yaitu asal bahan setek (anakan dan tunas pangkasan) dan konsentrasi zat pengatur tumbuh IBA (0 ppm; 250 ppm; 500 ppm) dengan 4 kali ulangan. Setiap ulangan terdiri dari 45 setek. Hasil penelitian menunjukkan bahwa materi setek pucuk terbaik adalah tunas dari bibit umur 5 bulan dengan persen setek berakar, jumlah akar panjang akar dan berat kering akar masing-masing adalah 96,05 %; 4,26 helai; 9,5cm dan 0,07 g. Zat pengatur tumbuh IBA hingga 500 ppm belum berpengaruh terhadap keberhasilan perakaran setek. Interaksi antara materi tunas dari tunas bibt dengan penambahan IBA 500 ppm menghasilkan berat kering akar setek tertinggi (0,088 g).
Co-Authors Kurniawati Purwaka Putri Rina Kurniaty