Judul: Pengaruh Pemberian Bioorganik terhadap Pertumbuhan Anakan Paraserianthes falcataria L (Nielsen)
Abstrak: INTRODUCTION. The problems of soil in tropical climate region are tend to be dominated by soil type that has low natural fertility and easily eroded by high sunlight intensity and precipitation, on of which is latosol soil. Latosol soil has a low natural fertility and fair chemical and physical attribute, because of that it is inappropriate to be used as plant media. To overcome this problem, bio-organic use is suggested. Bio-organic beside can activate soil microorganisms; it also can enhance root growth so that the use of bioorganic at the right concentration is hoped to fix the plant media condition and also directly increase the plant growth. MATERIALS AND METHOD. The research was conducted in IPB Faculty of Forestry Green House and Forestry Biotechnology Laboratory in December 2008- April 2009. The bioorganic product that was used was liquid-fermented with bioremedy solid-bio which was mixed with zeolit absorbent. The plant that was used was two-month aged seedling of Paraserianthes falcataria. The bioorganic treatment were B0 = Control/no bioorganic, B1 = (Liquid-Bio 1L + Zeolit 1kg) with 2gr concentrate, B2 = (Liquid-Bio 1L + Zeolit 1kg) with 5 gr concentrate, B13= (Liquid-Bio 1L + Zeolit 1kg) with 10 gr concentrate, B4 = (Liquid-Bio ½ L + Zeolit 1kg) with 2 gr concentrate, B5 = (Liquid-Bio ½ L + Zeolit 1kg) with 5 gr concentrate, B6 = (Liquid-Bio ½ L + Zeolit 1kg) with 10 gr concentrate, B7 = (Liquid-Bio ¼ L + Zeolit 1kg) with 2 gr concentrate, B8 = (Liquid-Bio ¼ L + Zeolit 1kg) with 5 gr concentrate, B7 = (Liquid-Bio ¼ L + Zeolit 1kg) with 10 gr concentrate, each treatment consisted of three repetitions whereas each repetiotion consisted of three units. The data were analyzed Complete Chaos design pattern with Minitab 14 and Costat. RESULT AND CONCLUSION. Based on various investigation testing results, bioorganic factor has no real effects on height growth, diameter, root nodules amount and total dry weight, but it has real effect on root tip ratio. Research shows that treatment B7 = (Liquid-Bio ¼ L + Zeolit 1kg) with 2 gr concentrate gives the best effect on root tip ratio with average value of 1.81. Bioorganic treatment gives no significant effects on the growth of P. falcataria due to unfavorable environment condition. P. falcataria is a pioneer, so it needs full sunlight during its growing process. Lack of sunlight and high moisture conditions cause its constant growth in every observation. Lack of sunlight and pest attack on the leaf tip due to moisture cause the photosynthesis doesn’t run at the optimum level that makes the seed growth becomes hampered. These unfavorable environment conditions are caused by the placement of seed under the shade.
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Judul: Pengaruh inokulasi rhizobium dan berbagai media terhadap pertumbuhan bibit paraserienthes falcataria
Abstrak: Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian inokulan Rhizobium dan berbagai media terhadap pertumbuhan Paraserianthes falcataria. Percobaan dilaksanakan di Laboratorium Lapang Kebun Percobaan IPB Cikarawang, Bogor, mulai tanggal 16 Januari sampai dengan tanggal 22 Mei 1991. Percobaan menggunakan rancangan acak lengkap yang disusun secara faktorial 2 X 4 dengan 3 ulangan, sehingga terdapat 24 satuan percobaan. Faktor pertama adalah inokulan yang terdiri dari perlakuan tanpa inokulan (Io) dan dengan Inokulan (I₁). Faktor ke dua adalah media yang terdiri dari media gambut impor (M₁), tanah Podsolik yang dicampur dengan pupuk kandang dengan perbandingan 3:1 (M2), tanah Latosol yang dicampur pupuk kandang dan pasir dengan perbandingan 2:1:1 (M3) serta tanah Latosol (M4). Analisa data yang digunakan adalah sidik ragam, yang apa- bila sidik ragam tersebut menunjukkan pengaruh yang berbeda nyata dilakukan uji lanjutan dengan uji beda nyata jujur. Komponen yang diamati terdiri dari tinggi tanaman, bobot basah dan bobot kering tajuk tanaman, bobot basah dan bobot kering akar, diameter batang, jumlah bintil akar, rasio akar-tajuk dan persentase bibit yang memenuhi syarat untuk ditanam (tinggi tanaman lebih dari 20 cm)...
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Judul: Grup dan Homomorfisma Grup pada Rubik Revenge
Abstrak: Rubik cube is a kind of puzzle game. A player must arrange rubik sides, which have been disordered, back to the position where every side has the same colour. This paper does not focus on the settlement solution, but instead on proving the existence of a group homomorphism between rubik movement group and S96 symmetric permutation group in rubik revenge. Firstly, it has been proved that rubik movement set is a group. Then, it also has been proved that the M set, which contains numeric labels of 1 until 96 in cubinos sides, is S96 symmetric permutation group.
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