Special Research Report: #515: Production Technology Efficacy of A-Rest™ or Bonzi™ on Clerodendrum thomsoniae as a Flowering Potted Plant Jeff S. Kuehny and Annina Delaune, Deparment of Horticulture, Louisiana State University AgCenter, Baton Rouge, LA 70803-2120. ___________________________________________________________________________________ pairs were planted in May 2004 (latitude 30.43N) using one per 6-inch container filled with a mixture of Promix. All plants received FUNDING INDUSTRY SOLUTIONS THROUGH RESEARCH & ambient light levels in a EDUCATION greenhouse with temperature Phone: 703-838-5211 set points of 86° F day/73° F E-mail:
[email protected] night. Plants were fertilized Website: www.endowment.org at ever irrigation with Figure 1. Effect of control, Peters™ 20-10-20 at the rate A-Rest™ (ancymidol) 0.5 of 200 ppm N. or1.0 mg a.i./pot drench on BACKGROUND C. thomsoniae. An application of A-Rest™ Two weeks after (ancymidol) or Bonzi™ transplanting, central leaders (paclobutrazol) has been were pinched. PGR recommended either as a treatments were applied after spray or a drench to control two weeks of vegetative growth of Clerodendrum growth. Measurements were thomsoniae. recorded 49 d after PGR applications. Recommendations suggest 6 to 50 ppm sprays that will RESULTS reduce plant growth by 40% A-Rest™ and Bonzi™ Figure 2. Effect of control, when compared to controls. reduced internode length of Bonzi™ (paclobutrazol) 0.5 They also increased C. thomsoniae (Table 1) and or 1.0 mg a.i./pot drench on flowering. The objectives of had minimal effect on days to C. thomsoniae. this study were to determine flower, number of laterals the efficacy of: a) A-Rest™ (average 3), or number of (ancymidol) at 100 or 200 leaves (average of 50).