Pengaruh Intensitas Cahaya Dan Kadar Daminosida Terhadap Iklim Mikro Dan Pertumbuhan Tanaman Krisan dalam Pot

• Main Author: Perpustakaan UGM, i-lib
• Format: Article NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2004
• Subjects: Jurnal i-lib UGM
• Online Access: https://repository.ugm.ac.id/22765/; http://i-lib.ugm.ac.id/jurnal/download.php?dataId=5687
• Institution: Universitas Gadjah Mada

The research was to study the effects of various light intensities on micro climate, and to determine the optimum light intensity and daminozide concentration on the growth of potted chrysanthemum. The research was conducted at Nano village, Tawangmangu, KarangAnyar, Surakarta in the altitude of 1100 meters above sea level from November 2003 to March 2004. The planting medium was andosol soil type. The method of the experiment was based on a split plot design, consisted of two factors and five repetitions. The main plot factor was the light intensities i.e. 55%, 75% and 100%. The daminozide concentrations were used as sub plot i.e. 0 ppm, 125 ppm, 250 ppm, 375 ppm, and 500 ppm. The results of the research showed that, (1). Seventy five percent of light intensity (25% of shading) gave optimum light intensity, air temperature and relative humidity to growth of the plant. (2) There were interaction effect of light intensities and daminozide concentrations mainly on leaf area, and relative growth rate. (3) Fivety five percent of light intensity and 500 ppm daminozide concentration produced the shorthest plant and the faster appearence time of the first branch. (4) Two hundred andfifiy part per million daminozide concentration produced the highest results in number of leaves per plant and dry weight of shoot. Keywords : chrysanthemum, light, daminozide, micro climate, growth.