Naphthylacetic Acid is a broad-spectrum auxinic plant growth regulator. The main physiological role is to promote cell elongation and promote rooting.
It is widely used in fruit trees. Today I will talk about the function and usage of Naphthylacetic Acid
Golden crown and marshal are apples and pears, spray 20 mg/L naphthalene acetic acid after two weeks of blooming, and spray 20 mg/L naphthalene acetic acid + 300 mg/L ethephon after Guoguang apple blooms for 10 days, can receive significant fruit thinning effect.
The apples of Tsugaru, Marshal and its short-branched varieties, Hongyu, etc., have serious fruit drop before harvesting.
5-10 days before the fruit drop period, spray 30-40 mg/L of naphthalene acetic acid, and then reapply after 10-12 days. Spray once to prevent fruit drop before harvest and promote fruit coloring.
Using 500-1000 mg/L naphthalene acetic acid solution to dip the roots of grape cuttings (quick dip) can improve the survival rate of cuttings and increase the amount of rooting.
Add 0.5~2.0 grams of talc powder to 0.5~2.0 grams of naphthalene acetic acid powder, mix well, soak the base of the cutting with water and then dip it in an appropriate amount of powder, and insert it into the seedbed. This method is used for cuttings of difficult-to-root seedlings, such as pomegranate.
Many varieties of the Marshal and Fuji apples, how to fertilize watermelons to achieve high yields, are easy to sprout and sprout tillers at the larger shearing and sawing cuts, which not only consumes a lot of nutrients, but also seriously affects the ventilation and light transmission of the inner chamber.
If 1% or 1.5% naphthalene acetic acid solution is used to coat the shears and saws in winter shearing, it can prevent the occurrence of sprouting.
When saplings are planted, immersing the roots in 50-100 mg/L naphthalene acetic acid solution for 20 minutes or spraying them on the roots can improve the survival rate of colonization.
Before planting, soaking the roots with low concentration naphthalene acetic acid for a long time can also get good results.
Jupiter's grapes impregnated the ear with 300 mg/L naphthalene acetic acid at the size of a pea to prevent shattering.
Hawthorn seed shell is thick and hard, and it is difficult to germinate. It takes 2 winters to germinate with the general stratification method.
Soaking seeds with 50-100 mg/L naphthalene acetic acid solution can promote the germination of hawthorn seeds.
Treatment with 0.25 mg/L naphthalene acetate lanolin ointment during the flowering stage of strawberries can induce parthenocarpic fruiting of strawberries.
In 40% Fumei arsenic 50 times solution, mixed with 50 mg/L naphthalene acetic acid, the Apple Qiangwang tree transformation technology can significantly improve the healing speed of rot scars, reduce the recurrence rate of rot diseases, and further improve the control effect.
Use 1 gram of naphthalene acetic acid to make a solution of 100 grams of water, then cut into strips with waste paper and immerse in the solution, take out and dry in the shade to form hormone paper.
Wrapping the grafted parts of fruit trees with hormone paper is conducive to the formation of callus. Compared with the unbanded, it can survive 3 to 5 days earlier.
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