Pertumbuhan Semai Cendana (Santalum album Linn.) pada Beberapa Ukuran Kantung Plastik i Daerah Semiarid = The growth of Sandalwood Seedlings at Varius Container Sizes in Semiarid Region
ABSTRACT. Mortality of sandalwood plantings in the semiarid region is high (less than 50 %), due to poor quality. One of seedling of the alternatives to reduce this mortality is using optimal container size. The method is hoped to increase the growth and survival rate of sandalwood seedlings in the field. The objective of this study was to determine the effects of various sizes of seedling container on growth and to recommend the best polybag size for sandalwood nursery. The study was conducted in Complete Randomized Design method using container size of polybag (wide x length as main treatment) i.e.: 7 x 20 cm2, 8 x 20 cm2, 9 x 20 cm, 10 x 21 cm2, 11 x 22 cm2, 12 x 23 cm2, 13 x 23 cm2, 14 x 24 cm2, and 15 x 252 cm. Experiment consisted of 30 replications. The polybag was filled with the potting medium consisting soil, sand, and compost in volume ratio of 4:1:1 and sown with Alternanthera sp. as a primary host plant in all treatment. The results of the experiment proved that application of polybag size (7 cm x20 cm to 15 cm x 25 cm) had significant effects on height, diameter, dry weight total, top root ratio, quality index and survival of sandalwood seedling at six months old. The application of polybag size 15 x 25 cm2 (1080 mL) produced the best growth i.e. height (24.53 cm ), diameter (4.27 mm), dry weight total (1.86 g), top root ratio (0.54), quality index (0.28) and survival (92 %).
Keywords: seedling growth, polybag size, Sandalwood
ABSTRAK. Dewasa ini persentase hidup tanaman cendana di daerah semiarid dinilai masih rendah (kurang dari 50 %). Hal ini disebabkan kualitas fisik bibit yang masih rendah. Untuk mengatasi masalah ini salah satu alternatif yang dapat dilakukan adalah dengan menggunakan ukuran wadah semai yang optimal. Hal ini diharapkan akan meningkatkan pertumbuhan serta menurunkan kematian bibit di lapangan. Tujuan penelitian ini adalah untuk mengetahui pengaruh variasi ukuran wadah media semai terhadap pertumbuhan dan kualitas bibit cendana. Penelitian disusun dalam Rancangan Acak Lengkap dengan perlakuan ukuran wadah kantung plastik (lebar x panjang) 7 cm x 20 cm, 8 cm x 20 cm, 9 cm x 20 cm, 10 cm x 21 cm, 11 cm x 22 cm, 12 cm x 23 cm, 13 cm x 23 cm, 14 cm x 24 cm, dan 15 cm x 25 cm. Setiap perlakuan terdiri dari 30 ulangan. Hasil penelitian menunjukkan bahwa penggunaan ukuran kantung plastik yang semakin besar (7 cm x 20 cm sampai 15 cm x 25 cm) nyata meningkatkan pertumbuhan tinggi, diameter, persen hidup, bobot kering total, kualitas bibit dan menurunkan nisbah pucuk akar cendana pada umur 6 bulan. Ukuran kantung plastik 15 cm x 25 cm (1080 mL) paling baik meningkatkan pertumbuhan tinggi (24,53 cm), diameter (4,270 mm), bobot kering total (1,86 g), rasio pucuk akar (0,54), indeks kualitas bibit (0,28) dan persen hidup (92 %).
Kata Kunci: Pertumbuhan bibit, ukuran kantung plastik, cendana
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