Uniconazole

Uniconazole is a triazole chemical used as a plant growth retardant. It is active on a wide range of plants and acts by inhibiting the production of gibberellins.[1]

Uniconazole
Names
IUPAC name
(E)-1-(4-Chlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)pent-1-en-3-ol
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.108.800
UNII
  • CC(C)(C)C(C(=CC1=CC=C(C=C1)Cl)N2C=NC=N2)O
Properties
C15H18ClN3
Molar mass 275.78 g·mol−1
Appearance White-light brown powder
Density 1.28 g/mL
Melting point 152.1–155.0 °C (305.8–311.0 °F; 425.2–428.1 K)
8.41 mg/L
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Uses

Uniconazole is applied to plants to restrain their growth. It is often used on perennials to maintain a marketable size and/or delay flowering.[2] Leaves usually appear darker after application because uniconazole increases chlorophyll content.[1]

Commercial products

The following products labeled for application to ornamental plants as plant growth retardants in the United States contain uniconazole:

Sunny is an Australian product containing uniconazole that is labeled for application to avocado trees to improve fruit size and quality.[5]

Application methods

Uniconazole products can be sprayed onto plant foliage or applied to the soil.[2] After it is taken up by plant roots, uniconazole is translocated in the xylem. The restricted-entry interval for Concise or Sumagic is 12 hours.[4][3]

Reversing the effects of over-application

Over-application of any growth retardant can be devastating to a crop. One way to reverse excessive stunting is to apply gibberellins A4 + A7 and benzyl adenine. In the United States a product called Fresco is labeled for this use.[6]

See also

References
  1. Izumi, K.; Oshio, H. (1991-01-01). Takahashi, Nobutaka; Phinney, Bernard O.; MacMillan, Jake (eds.). Gibberellins. Springer New York. pp. 330–338. doi:10.1007/978-1-4612-3002-1_32. ISBN 9781461277545.
  2. "Growth Regulators for Containerized Herbaceous Perennial Plants" (PDF). Ball Publishing. 2016. Retrieved 2017-01-02.
  3. "Concise Specimen Label" (PDF). Fine Americas. Retrieved 2017-01-02.
  4. "Sumagic Plant Growth Regulator" (PDF). Valent. 2010. Retrieved 2017-01-02.
  5. "Sunny Plant Growth Regulator" (PDF). Sumitomo Chemical. Retrieved 2017-01-02.
  6. "Fresco Specimen Label" (PDF). Fine Americas. Retrieved 2017-01-02.
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