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Paclobutrazol 95%TC

Country/Region china
Company ZHENGZHOU ZHENGSHI CHEMICAL CO., LTD
Categories Plant Growth Regulators
Telephone 0086-371-63817136 63845000
ICP License Issued by the Chinese Ministry
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Paclobutrazol 95%TC

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Product name
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;
Affiliate classification
Plant grouth regulator
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Product description

Paclobutrazol(pp333)

CAS NO.: 76738-62-0

EINECS NO.:266-325-7

Formulation: 90%TC, 15%WP

Chemical name:

(2S,3S)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1,2,4-triazol-1-yl)pentan-3-ol

Structure:

Chemical Formula: C15H20ClN3O

Molecular Weight: 293.79

Physical and Chemical Properties

A kind of white crystal, can dissolve in polarity organic solvent easily, such as ethanol, methanol and acetone etc, hard to dissolve in water(35mg/L, room temperature)melting point is 165-166℃. It is stable in room temperature.

Function Characteristics

1. Change endogenous hormones level, inhabit terminal dominance and resistant to lodging;

2. Increase the content of chlorophyll、nuclein、protein, inhabit or delay fading;

3. Increase the ability of cold resistant, drought resisting and anti-bacteria.

Application

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 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.

The Usage and Dosage of Paclobutrazol Used on Different Crops
CropsDosage
(mg/L)
Method of useEffects
Wheat0.1-0.2/kg seedsSeeds dressing in seeding stageIncrease rate of seedling emergence, rooting.
150Spray in tillering stageImprove tilling, increase yield.
150-200Spray in jointing stageControl overgrowth, improve logging-resistant
Rice150-180Spray in seedling stageImprove rooting and tilling
200-300Spray in jointing stageControl overgrowth, improve logging-resistant
Later rice in second season300Spray in seedling stageImprove rooting and tilling
Peanut150-180Spray once in full-blooming stage and needling stage respectivelyControl overgrowth, increase yield.
Soybean100-200Spray in early florescence stageControl overgrowth, increase yield.
Edible rape200Spray in trefoil stageImprove root and stem thick and strong
Potato250-300Spray when plant height 25-30cmImprove tuber stem expanding
Tomato10-20Spray when 5-6 true leavesSeedling growth better
pepper10-20Spray when seedling 6-7 cmSeedling growth better
Chinese cabbage50-100Spray spear leaf in later stage of growthControl bolting
Cabbage50-75Spray in 2-leaf stageSeedling growth better
Apple, pear,
peach
0.2g/plantWhen or before sprouting in spring apply to soilControl shoot and improve fruit growth
500Spray before new shoot fast growth
1%-5%Smear tree stem before new shoot fast growth
Grape2-3g/plantbefore sprouting apply to soilControl shoot and improve fruit growth
1500Smear tree stem before new shoot fast growth
Orange0.01g/plantbefore summer shoot apply to soilControl shoot and imp
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