![]() ![]() Growth Retardants: A promising tool for managing urban trees. ĭevi Rusmin, Balai Penelitian Tanaman Rempah dan Obat (Balitro) ![]() Increasing of the rhizome yield after PBZ application also reflected by increasing the content of chlorophyll in leaves and starch in rhizome. The results of research showed that: application 400 ppm of PBZ at 4 MAP was the best treatment for increasing number of tillers, shoots, leaves, yield of the rhizome, and also for producing ginger seed that physiologically meet the quality. The main plot was the time of PBZ applications: 1) 4 months after planting (MAP), and 2) 5 MAP, whereas as a subplot was the five-level concentrations of PBZ: 0, 100, 200, 300 and 400 ppm. Experiment was arranged with split plot design with three replications. The aim of the experiment was observing the effect of concentration and time of paclobutrazol (PBZ) application to improve production and quality of ginger seed rhizomes. ![]() Low production and quality of seed rhizomes and voluminous seed rhizomes size are the constraints of ginger seed rhizome production. Zingiber officinale, Paclobutrazol, seed rhizome production, seed rhizome quality. Institut Pertanian Bogor (Bogor Agricultural University) Balai Penelitian Tanaman Rempah dan Obat (Balitro)
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