Remediation of drug damage caused by paclobutrazol in orchid

Paclobutrazol is effective in domesticating wild orchids and optimizing the plant type of orchids. However, some people have caused drug damage to orchids due to improper use of paclobutrazol. Here are some remedial measures. Paclobutrazol is a plant retarder, which can delay the longitudinal elongation of plants, enhance the transverse growth, increase the number of flowers and tillers, thicken the stems, and make the plants dwarf and compact. The physiological effect is to increase the content of chlorophyll protein and nucleic acid, reduce the content of gibberellins and indole acetic acid, and increase the release of ethylene. Paclobutrazol was mainly absorbed by roots, but not by leaves. Paclobutrazol was used in gramineae plants with a concentration of 100-300PPM, 30ml / mu and 40g / mu, which often caused drug damage. To control the concentration of overgrowth is generally in 100PM. The overdose used in orchids is of course serious. Paclobutrazol is generally used only 1-2 times to control the overgrowth of plants, and the interval should be 10 days at 7 Mel. If it is used repeatedly on the same plant, it is of course very dangerous. Paclobutrazol was originally used in the normal range, such as rice and other crops to a certain extent, its delaying effect can be lifted by itself, but in woody and other crops due to the Lignification and keratinization of stems and leaves to achieve the purpose of length control. When used in orchids, the leaves can be controlled to be too long and dwarf, but if the dosage is too much, the orchid plants will stop growing or the leaves will be vilified. The remedial measures for drug damage caused by orchid plants can be carried out from the following aspects.