56425-91-3 | Flurprimidol

CAS:56425-91-3 | Flurprimidol,Description

Flurprimidol is a synthetic inhibitor of Gibberrelic Acid biosynthesis. It is used in tissue culture to control internode elongation, especially in liquid cultures. It is also used as a growth retardant in horticultural crops in Europe.

Molecular Structure Analysis

Flurprimidol has a molecular formula of C15H15F3N2O2 and an average mass of 312.287 Da.

Chemical Reactions Analysis

Flurprimidol is applied as a granular formulation. Its dissipation and movement through various mediums such as organic media and sand have been studied. The dissipation isotherms were determined by applying nonlinear regression.

Physical And Chemical Properties Analysis

Flurprimidol is a trifluoromethyl ether compound that has reduced oxidative metabolism, which reduces dissipation, but also increases its lipophilicity.

Scientific Research Applications

1. Ornamental Plant Growth Regulation

• Application Summary : Flurprimidol is used as a plant growth regulator on ornamental plants to reduce internode elongation and trimming frequency.
• Methods of Application : Two application methods were evaluated: granular and drench. The experiment was conducted on two landscaping species, Elaeagnus pungens and Loropetalum chinense.
• Results : The shoot growth of E. pungens was reduced by 4.3% and 13.9% by the granular and drench applications, respectively. The granular application reduced biomass by 25.1%. L. chinense shoot regrowth was decreased by 39.5% and 38.2% by the granular and drench treatments, respectively.

2. Swamp Sunflower Growth Control

• Application Summary : Flurprimidol is used to control the growth of the swamp sunflower, a perennial plant native to the southeastern United States.
• Methods of Application : The treatments were applied to rooted cuttings in 1-gal pots as a substrate drench of varying concentrations of Flurprimidol.
• Results : Six weeks after treatment, plants treated with the highest rate of Flurprimidol produced the smallest plants, with lower dry weights and higher chlorophyll measurements than the control.

3. Viburnum Growth Regulation

• Application Summary : Flurprimidol is used to regulate the growth of Viburnum, a common landscaping species.
• Methods of Application : Granular Flurprimidol was applied to well-established plants at a standard rate. The experiment was conducted on two Viburnum species, Viburnum odoratissimum and Viburnum suspensum.
• Results : Viburnum odoratissimum shoot regrowth was significantly reduced in Flurprimidol-treated plants compared with the untreated control. The insufficient growth regulation observed in both Viburnum species is likely the result of species tolerance.

4. Bedding Plants Growth Control

• Application Summary : Flurprimidol is used to control the growth of bedding plants, such as geranium and petunias.
• Methods of Application : Flurprimidol and paclobutrazol substrate drench applications were applied to geranium and petunias grown in containers filled with commercially available wood fiber substrates.
• Results : Flurprimidol and paclobutrazol drench activity was not affected by the two commercially available wood fiber substrates. Greenhouse growers can drench wood fiber substrates with 0.5 to 1 or 1 to 2 mg a.i./pot of Flurprimidol or paclobutrazol, respectively, to control growth of geranium and petunias.

5. Control of Bedding Plants Growth

• Application Summary : Flurprimidol is used to control the growth of bedding plants.
• Methods of Application : Substrate drench applications of Flurprimidol are commonly used.
• Results : The substrate composition can affect the efficacy of Flurprimidol drench.

6. Release from a Granular Formulation

• Application Summary : Flurprimidol can be applied as a granular formulation.
• Methods of Application : The release of Flurprimidol from a granular formulation and its movement in various mediums were studied.
• Results : Understanding Flurprimidol release from a granular formulation and movement in various mediums will impact how it is used.

Safety And Hazards

Flurprimidol causes skin irritation and serious eye irritation. It is also harmful to aquatic life with long-lasting effects.

Future Directions

Future research should focus on the efficacy of Flurprimidol and the interaction trimming timing provided that species with a history of known Flurprimidol performance are chosen.

More Information