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1-Naphthylacetic Acid (NAA) (CAS No. 86-87-3) is a synthetic plant growth regulator belonging to the auxin group. It promotes root initiation, stem elongation, and enhances plant tissue culture processes. At higher concentrations, it can act as a growth inhibitor, helping to regulate plant development.
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Ingredient Content:1-Naphthylacetic Acid 40% SP, 1% SL, 5% SL
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1-Naphthylacetic Acid (NAA) (CAS No. 86-87-3) is a synthetic auxin-type plant growth regulator widely used in agriculture and horticulture. It promotes root initiation, stem elongation, and tissue differentiation, while also helping control excessive vegetative growth at higher concentrations.
NAA is effective for improving cutting survival, reducing flower and fruit drop, and enhancing yield and plant vigor across various crops, including wheat, rice, cotton, vegetables, fruits, tea, and mulberry. It plays a key role in rooting, tissue culture, and crop stabilization, making it an essential product for modern crop management.

| Item | Specification |
|---|---|
| Product Name | 1-Naphthylacetic Acid (NAA) |
| CAS Number | 86-87-3 |
| Technical Grade | 95% TC |
| Formulations | 40% SP, 1% SL, 5% SL |
| Mode of Action | Auxin-type plant growth regulator |
| Shelf Life | 2 years |
| Delivery Time | 40–45 days |
Primary Keywords: Naphthylacetic Acid, NAA plant growth regulator, synthetic auxin, rooting hormone, crop yield enhancer, agricultural PGR
NAA acts as a synthetic auxin, regulating cell elongation, differentiation, and division in plants.
Promotes root initiation and elongation in cuttings and seedlings.
Supports tissue culture growth and regeneration processes.
Functions as a growth inhibitor at higher concentrations to balance vegetative growth.
Strengthens stem structure and prevents lodging in cereal crops such as wheat and rice.
Related Keywords: plant hormone, root growth enhancer, auxin analog, growth control, anti-lodging agent
NAA is suitable for use in multiple crop categories and propagation systems:
Stimulates rooting in plant cuttings.
Improves survival rates during transplanting.
Enhances stem strength and reduces lodging.
Promotes balanced plant growth for higher yields.
Reduces flower and fruit shedding.
Improves fruit retention and overall productivity.
Prevents premature fruit drop and improves fruit set.
Widely used on tea, mulberry, arborvitae, oak, and metasequoia species.
Supporting Keywords: plant rooting hormone, auxin regulator, fruit set enhancer, crop growth promoter
Auxin-based action – Promotes strong root and stem growth.
Broad crop compatibility – Effective on cereals, fruits, vegetables, and ornamentals.
Flexible formulations – Available as SP and SL for easy application.
Yield improvement – Reduces fruit drop and enhances productivity.
Stable and reliable – Maintains full activity for up to 2 years under proper storage.
Store in a cool, dry, well-ventilated area, away from sunlight and heat sources.
Avoid contact with alkaline materials or incompatible pesticides.
Keep containers tightly sealed when not in use.
Wear protective gloves and masks during handling and application.