Author:
JAIN RITU,JANAKIRAM T,KUMAWAT G L
Abstract
The present investigation to study the effect of growth regulators on growth and flowering of bougainvillea (Bougainvillea spectabilis) was carried out in the Division of Floriculture and Landscaping, IARI, New Delhi during 2012-13. The experiment was laid out in completely randomized block design with 11 treatments, 4 replications and 4 plants per replication. The bougainvilleas were planted in 10 inches pots in the month of July and were pruned back to a uniform height of 10+2 inches. The growth regulators, viz. maleic hydrazide, B-9 and paclobutrazol were applied in the form of foliar spray or drench and were compared with control (Distilled water) and the data were recorded for vegetative and flowering traits. Over a period of 14 weeks, it was observed that there was a significant reduction in plant height, plant spread, internode distance and shoot length with the application of maleic hydrazide followed by drenching with paclobutrazol. Maximum shoot diameter, maximum number of structural branches and maximum flower index was observed when plants were either sprayed or drenched with paclobutrazol.
Publisher
Indian Council of Agricultural Research, Directorate of Knowledge Management in Agriculture
Subject
Agronomy and Crop Science
Reference13 articles.
1. Aldrich J H and Norcini J E. 1996. Effect of plant growth regulators on growth of Barbara Karst bougainvillea. Proceedings of Florida State Horticultural Society 109: 3–4.
2. Barett J E and Nell T A. 1989. Comparison of paclobutrazol and uniconazole on floriculture crops. Acta Horticulturae 251: 275–90.
3. Horowitz M. 1990. Comparison of paclobutrazol and uniconazole applied as a foliar spray and soil drench. J. Mededelingen van de Faculteit Landbouwwetenschappen, Rijksuniversiteit. 55(3): 1 241–48.
4. Jain Ritu, Janakiram T Kishan Swaroop and Kumawat G L. 2014. Induction of dwarfing in bougainvillea cv. Mahara by use of growth regulators. Indian Journal of Agricultural Sciences 84(7): 802–7.
5. Karaguzel O. 1999. Effects of paclobutrazol on growth and flowering of Bougainvillea spectabilis Willd. Turkish Journal of Agriculture and Forestry 23(2): 527–32.