What is the difference between Paclobutrazol and Chlormequat
Today's focus is to introduce you to the related experience of the floral clinic, what is the difference between Paclobutrazol and Chlormequat, and then let's get to know together.
Both Paclobutrazol and Chlormequat are plant growth regulators that dwarf plants, so what is the difference between Paclobutrazol and Chlormequat, and which one is better? Let's first understand their mechanism of action, and then we will know which one is more suitable for us according to our needs.
Differences between Chlormequat and Paclobutrazol
1. Different physical and chemical properties
Chlormequat is soluble in water, while Paclobutrazol is basically insoluble in water. Therefore, Chlormequat products are aqueous solutions, while Paclobutrazol is a suspension agent.
2. Different mechanisms of action
The main mechanism of action of Chlormequat is to inhibit the biosynthesis of gibberellin, inhibit the formation of贝壳杉烯 from copalyl diphosphate, and thereby inhibit the endogenous biosynthesis of gibberellin. It shortens the internode length without reducing the number of cells and internodes. Thus, it only shortens the internode, darkens the leaf color, and makes the plant矮.
Paclobutrazol is a new type of plant growth regulator that can inhibit the production of gibberellin derivatives, reducing the division and elongation of plant cells. It is easily absorbed by roots, stems, and leaves and is transported through the plant's xylem, with a fungicidal effect. It has a wide range of activity on Poaceae plants, making the plant stems shorter and stronger, reducing lodging, and increasing yield. Plants' roots, stems, and leaves can absorb Paclobutrazol, but most of the Paclobutrazol absorbed by leaves stays in the absorption part and is rarely transported downward.
3. The impact on field crops
When Chlormequat is applied to field crops, it basically does not affect the next crop.
However, due to its long residual time, Paclobutrazol's efficacy can last for 2 years at room temperature of 20 degrees, which will affect the growth of the next crop, so it should be used with caution.
4. Different application methods
Chlormequat can be absorbed through methods such as soaking seeds, spraying, and flushing.
While Paclobutrazol is mostly used for spraying.
5. Application scope
Chlormequat has a wide range of applications, including food crops such as wheat, barley, rice, corn, and sorghum, economic crops such as soybeans, sesame, cucumbers, and melons, and fruit trees such as apples, pears, peaches, jujubes, and grapes. It can also be used on some ornamental plants to control plant shape.
The application range of Paclobutrazol is relatively smaller.
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