There are advantages and disadvantages in any business in the world. Plant growth regulators have many advantages. Of course, there are also drawbacks. Plant growth is an organic continuous process. Plant growth regulators are used to regulate the growth of a certain aspect of the plant, but it also has an effect on other aspects.
The following issues should also be noted when using plant growth regulators:
(1) Strict control of the conditions of use Plant growth regulators can not replace the basic nutrient conditions for the growth and development of oilseeds and other rapeseed, but only play a certain auxiliary role, even if the growth regulators must be based on sufficient water and fertilizer, Only can play its regulatory role.
(2) Strict control of concentration and frequency of plant growth regulators can show obvious physiological effects at very low concentrations, high concentrations can cause injury, so it is necessary to grasp the concentration of the drug, from the perspective of economy, safety and effectiveness. Dosage and number of administrations.
(3) The preparation must be ready for use, because many growth regulators are unstable in aqueous solution and easily decompose and fail.
(4) Mastering the period of use and methods are mainly determined by the type of plant growth regulator, duration of efficacy, and purpose of use.
(5) Note that when mixed with contraindications, it is necessary to understand whether there is a strengthening or antagonism between the mixed agents. When mixing with pesticides , it is necessary to understand the chemical and physical properties of the two to avoid the failure or increase of certain substances due to improper use. Large side effects, such as B9 can not be mixed with copper pesticides, ethephon and gibberellin can not be mixed with alkaline pesticides. Separate use should be separated by more than 1 week.
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