What corn growth regulators are there? What should be noted when using them?
Generally speaking, any pesticide that can inhibit the growth of corn and other crops can effectively control excessive growth of corn, but because there are many types of pesticides on the market and many are inferior products, if viewed from the perspective of chemical composition, pesticides containing any one or several of the following ingredients can effectively control excessive growth, so what corn growth regulators are there? What should be noted when using them?
What corn growth regulators are there?
Chlormequat chloride
Chlormequat chloride is an antagonist of gibberellin, and its mechanism of action is to inhibit the biosynthesis of gibberellin in the plant. Its physiological function is to control excessive vegetative growth of the plant, promote reproductive growth, shorten internodes, develop the root system, and resist lodging.
Aizhuangfeng
Its main ingredient is uniconazole. The mechanism of action of this type of regulator is to inhibit the biosynthesis of endogenous gibberellin, while increasing the activity of indoleacetic acid oxidase in the plant and reducing the level of endogenous auxin. It can significantly weaken the apical growth advantage of the plant, promote the growth of lateral buds, and dwarf the plant.
Ethephon
Ethephon is a plant growth regulator that promotes ripening, and can effectively dwarf the plant and promote the ripening and shedding of leaves and fruits.
Triazoles
Such as paclobutrazol, uniconazole, etc. The mechanism of action of this type of regulator is to inhibit the biosynthesis of endogenous gibberellin, while increasing the activity of indoleacetic acid oxidase in the plant and reducing the level of endogenous auxin. It can significantly weaken the apical growth advantage of the plant, promote the growth of lateral buds, and dwarf the plant.
Mepiquat chloride
Also known as succinic acid, mepiquat chloride. Mepiquat chloride can inhibit apical growth of the plant, shorten internode length, and make the plant type compact. It is mainly used for cotton shaping and corn growth control.
How to choose legitimate corn growth control products?
Right now is the season for applying corn growth control products, and this type of product on the market is also varied, so when choosing products we must choose those produced by designated pesticide enterprises, made by manufacturers specializing in the production of regulators, and do not seek cheapness, otherwise the loss will outweigh the gain in the end.
For example: corn Aiduoduo, as a corn growth regulator, has its best period of use at 5-8 leaves. Use 50ml of this product per mu mixed with 15 kg of water for foliar spraying, which can significantly dwarf the corn plant, change the ratio of female and male flowers, enhance lodging resistance, increase thousand-grain weight, and have a remarkable yield-increasing effect.
Precautions for using growth regulators
As plant growth regulators, corn growth regulators have different physiological effects on plants within different concentration ranges. If the concentration is too low, it will not achieve the due effect, and if the concentration is too high, it will produce serious side effects. Therefore, strictly controlling the application concentration, spraying according to the specified dosage and at the appropriate seedling stage are the keys to applying growth control products; in addition, do not spray before the corn has 5 leaves, do not spray on drought-stressed or weak seedlings, and when applying, pay attention to spraying the tall plants and not the short ones, and avoid repeated spraying. If rain occurs within 6 hours after spraying, spray again with half the dosage. The spraying amount should also be determined according to conditions; in years with drought and little rain, the amount of growth control agent used can be appropriately reduced, and in rainy years it can be appropriately increased.
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