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Plant growth regulator Paclobutrazol 25% WP
Paclobutrazol (PBZ) is a plant growth retardant (PGR). It acts by inhibiting gibberellin biosynthesis, reducing internodial growth to give stouter stems, increasing root growth, causing early fruitset and increasing seedset in plants such as tomato and pepper. Paclobutrazol (PBZ) has also been shown to reduce frostsensitivity in plants.
Paclobutrazol (PBZ) is also used to reduce shoot growth and has been shown to have additional positive effects on trees and shrubs. Among those are improved resistance to drought stress, darker green leaves, higher resistance against fungi and bacteria, and enhanced development of roots.
Product Name |
Paclobutrazol |
CAS NO. |
76738-62-0 |
|
Physical and Chemical Properties |
Molecular formula: C15H20ClN3O Molecular Weight: 293.79 Melting point: 164 °C Appearance: off-white to beige solid
|
Chemical structural formula |
|
Solubility & stability |
Solubility In water 22.9 mg/l. In xylene 5.67, n-heptane 0.199, acetone 72.4, ethyl acetate 45.1, n-octanol 29.4, methanol 115, 1,2-dichloroethane 51.9 (all in g/l). Stability Stable for more than 2 years at 20 °C, and more than 6 months at 50 °C. Stable to hydrolysis (pH 4–9), and not degraded by uv light (pH 7, 10 days). |
Products |
95%TC, 15%/25%/30%/50% WP, 15%/25% SC |
APPLICATIONS |
|
Biochemistry: Inhibits gibberellin biosynthesis by inhibition of the conversion of ent-kaurene to ent-kaurenoic acid, and inhibits sterol biosynthesis by inhibition of demethylation; hence inhibits the rate of cell division.
Mode of action: Plant growth regulator taken up into the xylem through the leaves, stems or roots, and translocated to growing sub-apical meristems. Produces more compact plants and enhances flowering and fruiting.
Uses: Used on fruit trees to inhibit vegetative growth and to improve fruit set; on pot-grown ornamentals and flower crops (e.g. chrysanthemums, begonias, freesias, poinsettias and bulbs) to inhibit growth; on rice to increase tillering, reduce lodging and increase yield; on turf to retard growth; and on grass seed crops and oilseed rape to reduce height and prevent lodging. To be applied as a foliar spray, as a soil drench, or by trunk injection. Has some fungicidal activity against mildew and rusts. Rates of application vary widely, depending on area of use, application method, application timing, size of crop, and cultivation method.
Phytotoxicity: Non-phytotoxic, though it intensifies greening. Some spotting has been noted on periwinkle foliage at higher temperatures. |
Specifications of Paclobutrazol 25% WP
Items |
Index |
Appearance |
Off-white powder |
Content |
25% min |
Ph value |
6-10 |
Fineness on 44um mesh screen % |
95 min |
Moisture |
2% max |
Company Profile
Chengdu Newsun Crop Science Co., Ltd. is a national high-tech company which is professional at research, manufacturing and development of green and organic agriculture inputs. Since its foundation in 1985, Chengdu Newsun set up its concept: Green and Healthy Crop Care. Based on its four product lines: Soil amendment and improvement products, Crop nutrition products, Botanical pesticides and Natural plant hormone Brassinolide, Chengdu Newsun provides one-stop service and products for green and organic agriculture, and also endeavors for the sustainable agriculture and a better eco-environment.
Philosophy
We provide green and healthy crop care and dedicate to the improvement of agriculture eco-environment and quality of agricultural products.
Product Lines
1. Soli amendment and improvement products: promotes a healthier soil and sustainable agriculture
2. Crop nutrition products: grows stronger crops and less diseases
3. Natural plant hormone Brassinolide: improves quality and quantity of crops
4. Botanical pesticides: provides green crop protection and reduces use of chemical pesticides
Factory
Warehouse
Manufacturing facilities
Research & Development
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