Error 1: replace "fertilizer" with "agent", some plant growth regulator is exaggerated by the manufacturer and used by some farmers as fertilizer, instead of fertilization, irrigation, intertillage, loose soil and other conventional techniques, eventually affect the use of plant growth regulator effect.
Error 2: increase dosage at will. Some farmers are afraid that the dosage of plant growth regulator is too small to be effective. They increase the dosage or concentration of plant growth regulator at will, so that its growth is inhibited, and even lead to leaf deformity and the death of the whole plant in serious cases.
Error 3: Directly add water to use plant growth regulator. Some plant regulators can not be directly dissolved in water, it is difficult to mix pharmaceutical, will affect the effect of use.
Error 4: Do not see the opportunity, spray at any time. Plant growth regulators must be used at critical times of plant growth in order to achieve maximum effectiveness. Some farmers believe that no matter when the plant growth regulator is sprayed, it will have an effect, so spraying at any time will lead to poor spraying effect.