0714081063, Westi Ulvia (2012) PERTUMBUHAN BIBIT MAHONI (,Swietenia macrophylla ) PADA BEBERAPA PERLAKUAN TARAF PEMUPUKAN DAN INTENSITAS CAHAYA MATAHARI. UNSPECIFIED.
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Abstract
Abstrak Pohon mahoni merupakan salah satu jenis tanaman yang cepat tumbuh (fast growing species). Beberapa faktor yang memengaruhi pertumbuhan tanaman adalah unsur hara dan intensitas cahaya mahatari. Dalam rangka pengadaan informasi teknik teknik pembibitan mahoni, maka dilakukan penelitian mengenai pertumbuhan bibit mahoni (Swietenia macrophylla ) pada beberapa perlakuan taraf pemupukan dan intensitas cahaya matahari. Penelitian ini bertujuan untuk mengetahui respon pertumbuhan mahoni terhadap perlakuan pupuk dan naungan. Penelitian dilaksanakan pada bulan Juni sampai September 2011 di rumah kaca Fakultas Pertanian Universitas Lampung. Penelitian dirancang dalam rancangan acak kelompok (RAK) dengan 4 kelompok dan 4 pelakuan. Kelompok pada penelitian ini adalah pemberian naungan 0%, 40%, 60%, dan 80%, sedangkan perlakuan dalam penelitian ini adalah pemberian pupuk anorganik NPK dengan konsentrasi 0 g/polibag, 1 g/ polibag, 2 g/polibag, dan 3 g/polibag. Kesamaan ragam diuji dengan uji Bartlett, dan data dianalisis dengan sidik ragam, serta dilakukan pembandingan nilai rata- rata menggunakan uji beda nyata terkecil (BNT) dan perbandingan orthogonal pada taraf 5%. Hasil penelitian menunjukkan bahwa pemberian pupuk NPK dosis 2 g/polibag memberikan pengaruh yang paling baik terhadap pertambahan diameter bibit sebesar 1,16 mm, dan BKT sebesar 3,94 g/bibit. Kelompok tanpa naungan memberikan pengaruh yang terbaik tehadap diameter sebesar 3,34 mm, dan pertambahan diameter sebesar 1,33 mm. Hal ini menunjukkan bahwa mahoni tidak tahan terhadap naungan. Kata kunci: intensitas cahaya matahari, mahoni, pupuk. Abstract Mahogany was a plant that grows fast. Some of the factors that affect plant growth was nutrients and solar radiation intensity. In order to supply infonnation the techniques of mahogany seedlings, then do research on the growth of seedlings of mahogany (Swietenia macrophylla) in some stage of fertilization treatment and the intensity of solar radiation. The are of this study of determine the growth response to treatment fertilization and mahogany shade. The study was conducted in June to September 2011 the greenhouse. The study was designed in randomized block design (RBD) with 4 groups and 4 treatment. Group in this study is the provision of shade 0%, 40%, 60%, and 80%, whereas the treatment in this study is the provision of inorganic NPK fertilizer with a concentration of 0 g/polybag, lg/polibag, 2g/polibag, and 3g/polibags. Similarity range tested with Bartlett test, and data were analyzed by variance, and comparisons made using the average value of the smallest real difference test (RDT) and orthogonal comparisons at the level of 5%. The results of this study was NPK fertilizer dose of 2g /polybag gives the best effect of the increment of 1.16 mm diameter seeds, and DWT of 3.94 g/seed. Group with no shade to give the best effect of 3.34 mm diameter Cosmos, and increase diameter of 1.33 mm. Key words: mahogany, NPK fertilizer, the intensity of day light
| Item Type: | Other |
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| Subjects: | A General Works = Karya Karya Umum |
| Divisions: | Fakultas Pertanian > Prodi Kehutanan |
| Depositing User: | IC-STAR . 2015 |
| Date Deposited: | 07 Sep 2015 04:33 |
| Last Modified: | 23 Oct 2015 04:19 |
| URI: | http://digilib.unila.ac.id/id/eprint/12539 |
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