Prohexadione Calcium

Prohexadione Calcium

Prohexadione calcium cannot dissolve in water and most organic solvent, it have other formula like WP, WDG, troche and so on. Prohexadione calcium works through leaf treatment, so foliage spray is the frequently way to use. The dosage is different with different crops.

Description

Prohexadione calcium

CAS NO.: 127277-53-6

EINECS: 603-193-5

Formulation: 10%WP, 15%WP, 10%WDG, 90%TC

Chemical name: Calcium 3-oxido-oxo-4-propionylcyclohexanecarboxylate


Chemical Formula: C20H22O10Ca

Molecular Weight: 462.46

Physical and chemical properties

Light yellow crystalline powder, melting point360,vapor pressure 1.33×10-3 pa(20), it is stability in light, heat, water solution and alkaline conditions.

Function Characteristics

1, Inhibit the growth of internodes, improve lodging-resistance;

2, Protect gibberellins’ activity and prevent presenility of crops;

3, Efficient, safety, non-toxicity and residue free.

Application

   Prohexadione calcium cannot dissolve in water and most organic solvent, it have other formula like WP, WDG, troche and so on. Prohexadione calcium works through leaf treatment, so foliage spray is the frequently way to use. The dosage is different with different crops.

Toxicity

Acute toxicity

LD50 Oral-rat-5,000mg/kg

LD50 Dermal-rat-2,000mg/kg

Skin corrosion/irritation

Skin-rabbit- No skin irritation

Serious eye damage/eye irritation

Eyes-rabbit-Mild eye irritation

 


 





Crops

Dosage

(g/667m2)

Method of use

Effects

Rice

2-3

foliage   spray 5-10days before jointing stage

Reduce   plant height obviously, shorten internodes height, prompt lodging- resistant   and the development of grains or fruits, increase crop yield

Sorghum

3-6

27-30days   after jointing stage, foliage spray

Controling   the ultimate height of sorghum

Peanut

2

Between   full-blooming stage and pod setting stage , foliage   spray

Reduce   peanut’s plant height, prompt the number of under contacts, increase fruit   number per plantkernel ratefat   content, increase crop yield markedly

Cotton

1.5-3

Once   between early florescence and full-bloom stage

Inhibit   the vegetative growth of leaves and branches, reduce plant height obviously,   ventilation and penetrating light, increase crop yield and promote quality.

Apple

2.25-4.5

Spraying   3 times in fall flowering stage, fruit bearing stage and physiological fruit   drop stage.

Inhibit   the vegetative growth of leaves and branches, improve the quality of fruits,   increase crop yield, while it has a very good preventive actions to Fire   blight (Erwinia amylovora) and other diseases caused by bacterium or fungoid.

Grape

3-6

Foliage   spray after flower faded

Inhibit   the vegetative growth of grape, improve the pigment and phenolic content of   grape juice, improve the quality of grape

Chrysanthemum,   kale, Dianthus caryophyllus and other ornamental plants

1.5-3

Foliage   spray

Inducing   dwarf, keeping leaves Green, slowing down senescence, no bad effect to leaves   and flowers

Agrostis,   cynodon, smooth meadow grass, perennial ryegrass, Japanese carpet grass,   zoysia grass and so on

3-20

Different   kinds of lawn with different dosage

3-5days   after mowing, foliage spray

Reduce   the height of new plant by 50-90%, reduce mowing times

 


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