Naphthalene acetic acid: an excellent plant growth regulator, helping agricultural harvests!
Naphthalene acetic acid, as an auxin-type plant growth regulator, not only has the basic functions of auxin, but also shows unique advantages in promoting plant growth. It can effectively stimulate the formation of adventitious roots and roots of plants. Whether it is seed rooting, cutting rooting, or the growth of fibrous roots of Solanaceae crops, it can be significantly promoted by naphthalene acetic acid.
In addition, naphthalene acetic acid can also accelerate the rapid expansion of fruits and tubers, becoming a leader among vegetable and fruit tree growth regulators. It can also increase the flowering and fruiting rate, effectively prevent the falling of flowers and fruits, and has an anti-drop function. By using naphthalene acetic acid, not only can the crop yield be increased and the quality be improved, but it can also promote lush branches and leaves, strong plants, and enhance the crop’s resistance to drought, cold, waterlogging, disease, salinity and other adverse conditions.
A. Accelerate the formation of adventitious roots and roots
(1) Grape cuttings. Soaking branches in 100 to 200 mg/L of solution can stimulate rapid rooting, promote germination and strengthen the plants.
(2) Tree transplanting. Before transplanting, treating the roots with the same concentration of solution can increase the rooting rate and thus improve the survival rate of the trees. For species such as tea, mulberry, oak and metasequoia, soaking the base of the cuttings in 10 to 15 mg/L solution for 24 hours can also promote rooting.
B. Promote the rapid expansion of fruits and tubers
(1) Sweet potato. After bundling the potato vines, soak the base of the vines in 10 to 20 mg/L solution to a depth of 1 inch, or briefly dip the vines in 80 to 100 mg/L solution and then immediately transplant them. This can effectively improve the survival rate and promote the expansion of the tubers, ultimately increasing the yield.
(2) Radish and cabbage. Soaking seeds in 15 to 30 mg/L of solution for 12 hours, then rinsing and sowing can stimulate fruit enlargement and increase yield. C. Improving fruit set rate and ensuring stable fruit growth (1) Citrus. Spraying the fruit stems with 40 to 60 mg/L of solution 15 days before harvest can prevent fruit drop before harvest and increase yield. (2) Apple, pear and red date. Spraying the entire plant with 15 to 20 mg/L of solution every 15 days during the young fruit stage and 45 days before harvest can promote fruit growth, prevent fruit drop before harvest and increase yield. (3) Watermelon. Dipping or spraying the flowers with 20 to 30 mg/L of solution when the female flowers first open can significantly increase fruit set rate. (4) Cotton. Starting from the flowering period of the plant, spray the leaves with 1 to 8 mg/L of the solution, spray once every 10 to 15 days, and continue for three times to effectively prevent the buds and bells from falling off.
(5) Pepper. Spray the whole plant with 20 mg/L of the solution during the flowering period to prevent the flowers from falling and promote the pepper production.
D. Promote overall growth, strengthen the plant, and improve yield and quality
(1) Wheat. Soak the seeds in 10 to 20 mg/L of the solution for 6 to 12 hours before sowing, or spray before jointing and during the tillering stage to promote tillering, increase the ear formation rate, and enhance the ability to resist salt and alkali, ultimately achieving increased yield.
(2) Rice. Soak the rice seeds in 10 to 20 mg/L of the solution for 6 hours before transplanting, which can promote greening and plant growth, thereby increasing yield. During the growing season, spraying the flag leaves and ears with 20 to 30 mg/L of the solution can also help strengthen the plants and increase yields. In addition, during the seedling field period, foliar spraying with 3 to 10 mg/L of the solution can effectively regulate the growth of rice.
(3) Corn and millet. Soak corn and millet seeds in 20 to 30 mg/L of the solution for 12 hours, then remove them, rinse them with clean water 1 to 2 times, and dry them before sowing. During the growing season, foliar spraying with 15 to 20 mg/L of the solution can promote the growth of these crops and increase yields.
(4) Cotton. Spraying the stems and leaves of cotton with a concentration of 1 to 8 mg/L can help regulate its growth.
(5) Tomato and eggplant. Before the establishment of the plants and the beginning of the flowering period, foliar spraying with 5 to 12 mg/L of the solution, spraying once every 10 to 15 days for three consecutive times, can stimulate the growth of crops and increase yields.
(6) Cucumber. During the growing season of cucumber, spray the whole plant with 5 to 20 mg/L solution 1 to 2 times to increase the density of female flowers and effectively regulate the growth of cucumber.
(7) Beans. Soak bean seeds in 10 to 20 mg/L solution for 5 to 1 hour before sowing. During the growing season, spray again with 5 to 20 mg/L solution 2 to 3 times. This can promote the growth of beans, accelerate maturity and increase yield.
(8) Potatoes. Soak potato tubers in 10 to 20 mg/L solution for 12 to 24 hours before sowing. This can effectively promote the growth of potatoes.
(9) Pineapple. Before pineapple flowers bloom, spray leaf buds and flower buds with 10 mg/L solution; during the fruit formation period, spray young fruits 2 to 3 times with 20 mg/L solution; and in the late vegetative growth period, inject 30 ml of 15 to 20 mg/L solution from the plant center. This can promote the growth of pineapples and increase yields.
(10) Sugarcane. During the tillering period of sugarcane, spray the leaves with 15 to 20 mg/L solution 2 to 3 times. This can effectively promote the growth of sugarcane and increase yields.
(11) Apple. Using a concentration of 30 to 50 mg/L for foliar spraying 1 to 2 times can significantly increase apple yields.
(12) Lemon. Spraying the lemon crown with 1% solution can accelerate the ripening of lemon fruits and increase yields.
(13) Tobacco. During the tobacco growing season, spray the leaves with 10 to 20 mg/L of liquid for 2 to 3 times. This can effectively regulate the growth of tobacco plants and improve the quality of tobacco leaves.
E. Precautions
(1) Since naphthalene acetic acid has a low solubility in cold water, it is recommended to dissolve it with a small amount of alcohol first, then gradually dilute it with water, or add a little water to make a paste, then add an appropriate amount of water and stir with sodium bicarbonate (baking soda) until it is completely dissolved.
(2) For early-maturing apple varieties, be cautious when thinning flowers or fruits to avoid phytotoxicity. If a concentration of 40 mg/L is used for autumn white pear, it may cause a reduction in yield, and too high a concentration may also cause adverse effects such as deformity, dead leaves and falling off. Figs will also be damaged by phytotoxicity when the concentration exceeds 50 mg/L. In addition, watermelon and melon should also be used with caution to avoid phytotoxicity.
(3) If naphthalene acetic acid enters the human body through the esophagus, it may cause poisoning and damage to the liver and kidneys. There is currently no effective antidote, so if symptoms of poisoning occur, you should go to the hospital for treatment immediately.
