Naphthaleneacetic acid (NAA) is a broad-spectrum plant growth regulator that can be used in a variety of crops. The solution enters the plant body through leaves, twigs, seeds, etc., and has the effects of promoting rooting, preventing flowers and fruits from falling, inhibiting tuber germination, and forming seedless fruits.
(1) Used as a rooting agent for asexual propagation materials such as cuttings or layering.
Woody plants: apples, pears, peaches, grapes, litchi, longan, sleeves, plum blossoms, osmanthus, and camellia. For roses, mulberry, tea, poplar, cypress, oak, metasequoia, etc., soak the base of the cuttings with a 25-500 mg/kg concentration of sodium thiamethoxam solution for 12 to 24 hours. Or mix the acetic acid solution into the culture soil, wrap the wound of the layering with the soil containing the drug, and then wrap the outside with plastic film to ensure that the cuttings survive.
(2) Prevent flowers and fruits from falling off:
① For apples, pears, citrus, persimmons, etc., spray 5-10 mg/kg concentration of liquid medicine 7-20 days before harvest. The fruit stalk should be wet when spraying.
③ For tomatoes, pumpkins, watermelons, etc., spray 10-20 mg/kg concentration of liquid medicine on the flowers when they are in bloom, or apply the liquid medicine to the ovary.
(3) Inhibit the germination of tubers, bulbs, and root vegetables during storage.
Before harvesting potatoes, spray 15 mg/kg of liquid medicine. Before harvesting onions, garlic, etc., spray 3,000 mg/kg of liquid medicine. Four days before harvesting carrots, spray 1,000-5,000 mg/kg of liquid medicine.
(4) It can also be used for thinning flowers and fruits of fruit trees.
Precautions:
(1) This product is irritating to the skin and membranes. The personnel who prepare and apply the medicine should pay attention to protection.
(2) Different varieties of the same crop react differently to acetic acid ban. The concentration and period of application vary according to the variety. Tests should be conducted before use to determine the appropriate concentration and period of application.
(3) Adding an appropriate amount of surfactant during application can improve the efficacy of the drug.
