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4-CPA 4-Chlorophenoxyacetic acid Plant growth regulator 4-CPA
4-Chlorophenoxyacetic acid is safer than 2,4-D after application, and not easy to produce phytotoxicity.
4-Chlorophenoxyacetic acid can be absorbed by plants roots, stem, flowers and fruits, and biological activity lasts longer.
Function characteristics:
4-CPA is belong to auxin class, it is also a plant growth regulator.
1. It can promote growth, prevent the formation of abscission layer, and promote fruit-setting.
2. It has the effect of inducing the parthenocarpy.
3. It is safer than 2,4-D after application, and not easy to produce phytotoxicity.
4. It can be absorbed by plants roots, stem, flowers and fruits, and biological activity lasts longer.
Usage concentration: 5-25ppm is proper.
Usage method:
1. Eggplant in flower period, the dosage is 25-30mg/L, and consecutive two times, every time interval one week.
2. When the tomato blossom in half, spray one time with 25-30mg/L. Spray pepper once to twice with 15-25mg/L.
3. In sunny afternoon spray with 25-35mg/L before 3-15 days of the cabbage harvested.
Notice:
1. Be sure to fixed point when spray flower(only spray flower not spray stem and leaves), and should choose a sunny morning or evening.
2. When application the pure product, first dissolve with alcohol or high concentration, and add water to the required concentration.
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