Editorial Type:
Article Category: Research Article
 | 
Online Publication Date: 01 Jun 1995

Growth Control of Asiatic Jasmine and Carolina Jessamine with Uniconazole

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Page Range: 55 – 59
DOI: 10.24266/0738-2898-13.2.55
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Abstract

A single foliar spray of 75 to 300 ppm uniconazole suppressed runner elongation of Trachelospermum asiaticum (Siebold & Zucc.) Nakai (Asiatic or Japanese star jasmine) for 9 weeks. Uniconazole did not, however, affect number of runners exceeding 20.3 cm (8 in) in length or shoot dry weight. Two foliar sprays of 300 to 900 ppm uniconazole or two drench applications of 3 to 20 mg ai/pot, applied 6½ weeks apart, suppressed lengths of the longest runners for at least 19 and 6 weeks, respectively, and runner number exceeding 20.3 cm (8 in) and shoot dry weight for 46 weeks. Two foliar sprays of 75 to 300 ppm uniconazole or two drench applications of 1 to 5 mg ai/pot, applied 14 weeks apart, reduced shoot dry weight of Gelsemium sempervirens (L.) Ait. (Carolina jessamine) 38 and 59 weeks after initial treatment, but had no effect on shoot length as early as 14 weeks after initial treatment. Shoot length of jessamine was reduced 6 and 19 weeks after initial treatment with two foliar sprays of 300 to 900 ppm uniconazole or two drench applications of 3 to 20 mg ai/pot. Foliar rates of 600 or 900 ppm and drench rates of 10 to 20 mg ai/pot suppressed shoot growth of jessamine excessively and were considered unacceptable.

Copyright: Copyright, All Rights Reserved 1995

Contributor Notes

2Professor of Horticulture.

3Former Superintendent, Ornamental Horticulture Substation, Mobile, AL 36689; current address: The Scotts Company, 1411 Scottslawn Rd., Marysville, OH 43041.

Received: 26 Sept 1994
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