What is a plant growth regulator

What are plant growth regulators? Please give a detailed description of plant growth regulators are a class of substances used to regulate plant growth and development. Plant growth regulators, also known as plant exogenous hormones, are generally produced by artificial synthesis or microbial fermentation, and their physiological and biological effects are the same or similar to those of natural plant hormones (a class of natural compounds in plants). At present, plant growth regulators are widely used in agroforestry production in the world. there are more than 100 commercial varieties abroad, including ethephon, mepionium, dwarf, thiobenzuron, gibberellic acid and so on. the scope of application includes vegetables, fruit trees, cotton, tobacco, rice, wheat, corn and soybean and other crops. There are 38 varieties of plant growth regulators registered and used in China, of which nearly 10 varieties are commonly used, such as ethephon and gibberellic acid, which are mainly used in horticulture, rice, cotton and other crops. The varieties registered and used in cucumber in China are thiobenzuron, clopidourea, nucleotides, brassinolide, sodium nitrophenol, naphthylacetic acid, indolebutyric acid and other 7 varieties, the main function is to promote the growth of female flowers and improve the fruit setting rate. Plant growth regulators are low toxic products and are safe to use if they are used in accordance with the usage and precautions indicated on the national registration approval label. The use of plant growth regulators can not only ensure the stable yield of crops and improve the quality of agricultural products, but also enhance the stress resistance of crops and save labor, time, cost and efficiency in agricultural production. National regulations on the use of plant growth regulators: according to the regulations on the Administration of pesticides, plant growth regulators fall within the scope of pesticide management. Only plant growth regulator products that have obtained pesticide registration and production permission can be produced, operated and used. In our country, the requirements for pesticide registration are very strict, and pesticide products applying for registration need to carry out a large number of tests, and strict examination and scientific evaluation are carried out from the aspects of product chemistry, efficacy, toxicology, residue, environmental impact, and so on. Only after scientific evaluation, it is proved that it has a good prevention and control effect, and the impact on human and animal health and the environment is controllable, in line with the requirements for the protection of human health and environmental safety. The production and marketing of pesticides shall be accompanied by labels approved by the relevant departments, defining the effective ingredients, methods of use and matters needing attention. Plant growth regulators should be used in strict accordance with the dosage, period and method of use indicated on the label, and should not be abused. Will melons and fruits ripened with hormones do harm to the human body? Plant hormone refers to a small amount of organic matter that naturally exists in plants and plays a significant role in plant growth and development, which is also known as plant natural hormone or plant endogenous hormone. Its existence can affect and effectively regulate plant growth and development, including a series of plant life processes from cell growth and division to rooting, sprouting, flowering, fruiting, maturation and shedding. After people understand the structure and action mechanism of natural plant hormones, plant growth regulators are used in agricultural production to effectively regulate the growth process of crops through artificial synthesis of substances with similar physiological and biological effects as plant hormones. To achieve the purpose of stable yield and increase production, improve quality, enhance crop resistance and so on. According to the dosage, period and method indicated on the registration approval label, the use of plant growth regulators will not cause harm to human health. If there is a non-standard use, it may make the crops grow too fast, which will have a certain impact on the quality and taste of agricultural products, but will not do harm to human health. Can the existing regulatory measures for the quality and safety of agricultural products detect the use of plant hormones? Plant hormones are divided into endogenous hormones and exogenous hormones. Only exogenous hormones (plant growth regulators) have detection problems. There are corresponding detection methods for plant growth regulators approved by the state. The existing quality and safety supervision and professional testing institutions of agricultural products all have the ability to detect plant growth regulators in agricultural products and can accurately detect whether plant growth regulators are used or not. As plant growth regulators are mainly used in the process of plant growth, the residues in mature fruits or listed products are generally very low, so accurate quantitative analysis is needed. Click to get more regulator application techniques click to get more pesticide application techniques