What is the effect of paclobutrazol?

What are the effects of spraying paclobutrazol? What is the effect of paclobutrazol sprayed on fruit trees? What is the efficacy and effect of paclobutrazol? The following land network is briefly introduced for netizens' reference. Paclobutrazol is a new type of plant growth regulator, which has achieved obvious dwarfing and yield-increasing effects in pear, peach and other varieties, and has been used in apple, grape, Hawthorn and citrus trees. 1. Spraying paclobutrazol on fruit trees could reduce the elongation of elongated branches, shorten the length of internodes, promote the development of lateral branches and short fruit branches, reduce the number of leaves and increase the thickness of leaves. Paclobutrazol also affected the growth of roots, such as inhibiting the growth of main roots, increasing the thickness of absorbing roots, and increasing the proportion of lateral roots and absorbing roots to the total number of roots. 2. Paclobutrazol can obviously inhibit the synthesis of gibberellin. Foliar spraying gibberellin could restore the effect of paclobutrazol on the branch growth of apple, peach and citrus seedlings. The results showed that the main mechanism of the effect of paclobutrazol on the vegetative growth of fruit trees was to inhibit the synthesis of endogenous gibberellin. 3. The prolonged growth of fruit trees treated with paclobutrazol was inhibited, but the lateral branches and short fruit branches increased greatly, which indicated that paclobutrazol not only inhibited the synthesis of endogenous gibberellin, but also decreased the synthesis of indole acetic acid IAA. 4. Spraying paclobutrazol can increase the leaf green, chlorophyll content and soluble protein content of apple, peach and Hawthorn. Paclobutrazol increased the content of carbohydrates in various organs of apple seedlings. This shows that the transport of carbohydrates to the root system increases. Thus it can be seen that paclobutrazol significantly increased the photosynthetic efficiency of fruit trees and promoted the output of carbohydrates from leaves. The increase of photosynthetic intensity of fruit trees was shown in two aspects: paclobutrazol increased chlorophyll content and photosynthetic efficiency. B paclobutrazol reduced vegetative growth and made the crown ventilated and transparent, thus indirectly increasing the light intensity. 5. Paclobutrazol increased the concentration of nitrogen, phosphorus, potassium, calcium, magnesium, manganese, copper, boron and zinc in the leaves of apple seedlings. The effect of paclobutrazol on the level of mineral nutrition was related to the increase of ATP activity in roots, the increase of root / shoot ratio, the growth of lateral roots and absorbing roots, and the change of transpiration intensity. The above is the introduction of the role of paclobutrazol in the farming network. If you have a better supplement, please leave a message below and let us know.