The system introduces the main methods of grape control (二)

Third, plant regulators for control

Chlormequat: is a quaternary ammonium plant regulator that inhibits the biosynthesis of gibberellin in the body. The grapes are sprayed at the beginning of the flower and two weeks after the flower. The premature application of the branches is aging fast, and the flower buds are uncontrollable at high temperatures. The tree is weak and cannot be used.

Paclobutrazol: a triazole plant growth regulator that inhibits the synthesis of gibberellins. Whole plant spray is applied to the growth period of grape shoots. After use, the whole plant does not love long in the short term, and the severe bifurcation tips in the later stage increase, and the residual period is longer.

Uniconazole: Similar to paclobutrazol, a triazole plant regulator that inhibits the synthesis of gibberellins. The residual period is relatively short compared to paclobutrazol.

Prohexadione calcium: Selective inhibition of GA1 synthesis, but no inhibition of GA4 and GA7, GA1 is mainly present in the vegetative organs to control the elongation of stems and leaves. The effect is similar to paclobutrazol, and the residual period is shorter than paclobutrazol and uniconazole, which is safe for the environment. It can be used during the whole growth period.

 Mepiquat: It is a piperidine plant regulator that inhibits the biosynthesis of gibberellin. The effect of controlling wang is mild, and there is no side effect on flowering during flowering.

In the use of chlormequat, mepiquat used less times, the concentration is low, can ignore the impact on young fruit, multiple or high concentration treatment should use directional spray, less impact on young fruit.

All methods of controlling the control should be organically combined, and do not focus on a single method of controlling Wang. The scientific and rational management of water and fertilizer in the early stage reduced the length of the grape, cooperated with the management of the auxiliary tip and the cutting of the ring to promote the ventilation and light transportation of the vineyard, and combined with the chemical control and the phosphate fertilizer to control the grape. Under different varieties and climatic conditions, it is necessary to try to find the most reasonable control method for controlling the prosperity in a small area to achieve a bumper harvest.

 Zhengzhou Delong Chemical CO., Ltd. is the production base of plant growth regulators in China, which established in 2009, specializing in offering plant protection products. If you have any question, contact us any time.