Citrus can be used as tip control medicine, and paclobutrazol can be used generally. Paclobutrazol is generally used when the summer shoots of orchard plants have just sprouted. However, it should be noted that when paclobutrazol plant growth retarder is used to inhibit new shoot shooting, it is necessary to spray the whole leaf surface and leaf back to the extent that the drug drops just fall. This is because there are more gaps and pores in the back of leaves than in the leaves, and the effective components in the liquid medicine can easily enter the plants after taking the medicine (it is also appropriate to spray other foliar fertilizers or plant growth regulators, fungicides and systemic pesticides, mainly on the back of leaves).
Paclobutrazol is used to inhibit summer shoots, and its concentration range is generally adjusted within 500 ~ 1000 ppm. It is necessary to adjust different application concentrations according to the changes of the above conditions, and it is necessary for producers to constantly sum up their experiences and master them flexibly. When there is no experience, the safety factor of 500 ~ 750 ppm is generally higher. 333 g and 500 g 15% paclobutrazol powder are 500PPM and 750PPM for 100 kg water respectively.