Plant Growth Promoter- P-iodophenoxyacetic acid 4-IPA

       P-iodophenoxy 4-IPA

　　【1】Chinese common name p-iodophenoxy
　　【2】English common name 4-iodophenoxy, 4-IPA
　　【3】Commodity Name Protecting cotton bolls, increasing yield
　　【4】Chemical name 4-iodophenoxy
　　【5】CAS No. 1878-94-0
　　【6】Molecular formula C8H7O3
　　【7】Relative molecular mass 278.04
　　【8】Physical and chemical properties
　　The original drug is a white needle-like crystal, odorless and tasteless, with a melting point of 154-156 °C. The industrial product is an orange-yellow powder with a slightly irritating iodine odor. Slightly soluble in cold water, easily soluble in hot water and organic solvents such as ethanol, chloroform, benzene, etc., and forms salts in the presence of alkalis, with stable chemical properties and can be stored for a long time.
　　【9】 Toxicity Low toxicity
　　【10】Main dosage form
　　95% p-iodophenoxy original powder, 0.1% p-iodophenoxy EC
　　【11】Features
　　p-Iodophenoxy is a phenoxy plant growth regulator with auxin activity, which can promote cell division, differentiation, and prevent the formation of abscission layers. It can regulate the nutrients in plants, transfer them from vegetative organs to reproductive organs, promote flowering and fruiting, and can also transfer assimilates to the parts with strong growth to increase yield.
　　【12】Applied technology
　　Rice, wheat, corn
　　In the heading (silk) and grain-filling stages, spraying the whole plant with panpan industry's 20-30 mg/L 4-iodophenoxy liquid medicine can promote early heading, increase seed setting rate and thousand-grain weight, and increase yield.
　　Sorghum
　　In the heading and flowering stage, spraying the ear part or the whole plant with 15-20mg/L liquid medicine can reduce the rate of grains and increase the 1000-grain weight.
　　Cotton
　　Soaking cotton seeds with panpan industry's 50mg/L 4-iodophenoxy liquid medicine for 8-16 hours can promote strong seedlings; spraying 5-10mg/L liquid medicine 1 or 2 times from the budding stage to the beginning of flowering, with an interval of 10 days, has the effect of preserving flowers and bells.
　　Tomato
　　In the flowering period of 1 to 4 inflorescences, spraying with 20-30 mg/L liquid or spraying the whole plant with 5-10 mg/L liquid can prevent flowers from falling and promote fruiting.
　　Cucumber
　　In the young cucumber stage, applying panpan industry's 5mg/L 4-iodophenoxy liquid medicine can promote the increase of fruit diameter and quality.
　　Cabbage, Chinese cabbage
　　In the cardiac period, spraying with 20-30mg/L liquid medicine for 2 times can obviously promote the growth and improve the fruit setting rate.
　　Peanut
　　In the early flowering stage and the lowering stage, spray 1 or 2 times with 10-40 mg/L liquid medicine, which can increase the number of branches and fruits, and promote the increase of yield.
　　Soybean
　　In the period from full bloom to pod setting of soybean, spray 2 times with 15-30 mg/L liquid medicine, with an interval of 7-10 days, and spray 30-50 kg per mu, which can promote plant growth, increase branching, expand leaf area, and improve photosynthetic efficiency. And promote the transport of assimilates to the flower pods, improve the pod setting rate, and increase the yield by 7% to 15%.
　　Broad beans, peas
　　Spraying 10mg/L liquid 1 to 2 times in full bloom and pod setting stage can increase yield significantly.
　　Green beans
　　Spraying with 10mg/L liquid medicine during the growth or flowering period of mung bean can promote the plumpness of the grain and increase the yield.
　　Sesame
　　In the budding and flowering stages, spray twice with 10-20 mg/L liquid medicine, which can promote the development of flowers and fruits, prevent flower drop, and promote full grain.
　　【13】Notes
　　①P-iodophenoxy (sodium) can be used by spraying, spot coating or seed soaking. When preparing the liquid, first dissolve the original medicinal alcohol or hot water to form a mother liquor, and then dilute it with cold water to the specified concentration before use.
　　②In the flowering period, spraying should be carried out in the afternoon, so as not to affect pollination by spraying the liquid on the stamens. If it rains within 6 hours after spraying, it is necessary to re-spray.
　　③ If the soaking time exceeds 12h, the concentration should be appropriately reduced.
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