Application of Plant Growth Regulator in Grapes

- Jan 09, 2018 -

1. Cuttings rooting

Indole acetic acid. Rapid immersion method: A high concentration of 1000 kg /L of solution is placed in a basin with a depth of 3 to 4 cm, and then place a small bundle of sticks in the bowl and soak for 5 seconds and dry, after that the sticks are ready to be planted. This kind of operation is simple, the equipment is small, the dosage is small, and the speed is fast. Slow immersion method: The Indole acetic acid was configured with a solution of 25mg - 200mg /L, and the bottom of the socket was soaked in the liquid for 8 to 12 hours before the cuttings were taken out. This method is long in soaking time and has a large dosage.

Naphthalene acetic acidSelect a good and non-pathogenic branches, and soak the bottom of the cuttings 2-3 cm in a solution of naphthalene acetate for 8-12 hours, then bury it in the moist sand to promote the root. This can both promote the root and prevent premature shoots. Note that naphthalene acetic acid and Indole acetic acid can be mixed to enhance the growth of root growth.


2. Inhibit the growth of new shoots

Daminozide. The use of butyryl hydrazine can shorten the distance between the grape branches, the leaf color deepens and the chlorophyll increases. Butyl hydrazine controls the growth of the new growth of the grape and the effect of the growth of the new shoots is slower than cycocel. The time of the spray of Butyl hydrazine is earlier 7 to 10 days than cycocel before the pyrenin, and the spray concentration should be controlled between 2000 and 3000 mg per liter, depending on the grape variety.

Cycocel. In the early days of the new branch, before the grape blooms, spraying with 100 to 500mg /L of the liquid, it has a clear inhibitory effect on the growth of the new shoots. The average growth rate is one-third to two-thirds less than that of the control, and the growth of the secondary branches is also controlled, it is suitable for muscat grape to spray 100-400mg /L of the liquid, and for kyoho grape ,500-800 mg/L is required. Therefore, when the grapes are sprayed, control the spray concentration. Different varieties have different control effects on the use of Cycocel. Therefore, it is necessary to control the growth of the branches in accordance with local varieties and natural conditions.


3. Raise the fruit rate and protect the fruit

Diethyl aminoethyl hexanoate. In the beginning of flowering, using 10-15mg/L of the liquid spray 1-2 times, which can increase the fruit rate.

PCPA. The PCPA of 50mg/L was treated one time at the flowering stage and the juvenile stage respectively,which has obvious effect of protecting fruit.

Brassinolide. Grapes can be used for 6 days after flowering, with 0.01 mg/l of brassinolate solution to soak the panicle and increase the yield.

Cytokinins. In the early flowering period and prosperous flowering period, the spraying concentration of the cultivation of the greenhouse was 5 mg/l, and the concentration of land cultivation was 2mg/l - 5mg/l, which can inhibit the flower fall down.


4. Raise the resistance and enhance the growth of the plants

Diethyl aminoethyl hexanoate. The fruit puffed period, spraying 1-2 times with 10-15mg /l of the liquid can make the fruit grow fast, the size is even, the sugar content increases and the resistance is improved.

Sodium nitrophenolate. Spray the liquid of 5, 000 to 6000 times after the new bud flower, spray 2-3 times from 20 days before flowering, and then spray 1 or 2 times after the results, which can promote the results and fruit hypertrophy. Continuous use can enhance the growth of the tree, suppress the recession, and the quality of the product, the taste all have good promotion function.

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