4-Chlorophenoxyacetic Acid (4-CPA)
CAS No.: 122-88-3
Properties: white crystalline powder. Slightly soluble in water; soluble in ethanol, acetone and benzene.
Mode of action:
It is a phenoxy plant growth regulator with auxin activity. It is absorbed by roots, stems, leaves, flowers and fruits, the biological activity lasts for a long time. Its physiological effect is similar to that of endogenous auxin. It stimulates cell division and tissue differentiation, stimulate ovary enlargement, induce single fruit, form seedless fruit, promote fruit setting and fruit enlargement, induce seedless fruit, prevent flower and fruit drop, promote fruit development, mature earlier, increase yield, improve quality.
Usage:
It is used to prevent abscission of bloom and fruit, inhibit rooting of beans, promote fruit set, induce formation of seedless fruit.
It is also used for ripening and fruit thinning.
It performs better when used in combination with 0.1% monopotassium phosphate. It also has herbicidal effect at high dosage.
It can increase the percentage of the fruit bearing(increase output) and promote the enlargement of fruit.