Thidiazuron is a new and efficient plant growth regulator. It is a colorless and tasteless crystal. Thidiazuron is a new and efficient cytokinin, which can better promote plant bud differentiation in tissue culture. It belongs to heterocyclic aromatic ureas. It is a compound with special plant growth regulation. It is used for cotton defoliation and ripening. Through the absorption of cotton leaves, it affects the three main plant hormones in plants – ethylene, auxin and cytokinin, promotes the formation of natural separation between stems, leaves and petioles, and leads to cotton defoliation.
Application characteristics of thidiazuron: 1. The defoliation effect of thidiazuron is excellent, and the ripening effect is not as good as ethephon. It is greatly restricted by weather conditions (there are some manufacturers with better production technology, and the production of effective additives of thidiazuron can greatly reduce the weather restriction of thidiazuron ,but reasonable use will play a good effect. 2. As a urea plant growth regulator, thidiazuron has cytokinin activity. In addition to being used as cotton defoliation agent, it can also be used for apple tree, grape tree, hibiscus defoliation, kidney bean, soybean, peanut and other crops. 3. Thidiazuron has obvious inhibitory effect, and the dosage is 0.3 ~ 3kg / hm2. If the dosage of cotton field is 0.5kg/hm2, use the medicine when 50% ~ 60% cotton peach is opened. Dilute the preparation into 500L / hm2 aqueous solution and spray it on the plant. The defoliation effect is 98%. It can also be used to control weeds such as barnyardgrass, toothbrush, horse Tang, kanmai Niang, creeping ice grass and pig plague. The dosage is 3kg / hm2 and the control effect is nearly 100%.
Effect of thidiazuron: (1) Promote cell division and fruit expansion: thidiazuron can not only promote cell division, but also promote the lateral and vertical growth of organs, which can expand fruits. (2) Delaying leaf senescence: thidiazuron can keep plants green for a long time, strengthen chlorophyll synthesis, improve photosynthesis and promote leaf color deepening. (3) Breaking the apical advantage: thidiazuron can promote lateral bud germination, induce bud differentiation, promote the production of lateral branches, increase the number of branches and flowers, and improve the pregnancy probability of pollen, so as to increase the number of fruits. (4) Improve crop quality and marketability: thidiazuron can promote parthenocarpy, stimulate ovary expansion, prevent plant flower and fruit falling, promote protein synthesis, increase sugar content, etc. (5) Thidiazuron can also reduce the damage of pests in the later stage.
Post time: Nov-29-2021