Plant Growth Regulator Indole-3-Acetic Acid IAA
Product Overview
Indole-3-Acetic Acid (IAA) is a naturally occurring auxin—a class of plant growth regulators critical for regulating key physiological processes in crops. As a professional agricultural chemical,
My factory has more than 20 years experience on producing Indole-3-Acetic Acid (IAA), purity is ≥98% with high activity and lower isomer content. we supply goods to many countries' buyers.
Core Product Advantages: High Purity & Strong Bioactivity
1. Ultra-High Purity (≥98%)
The high purity of our IAA is a key differentiator. Impurities in low-grade IAA products can interfere with plant hormone signaling, leading to inconsistent results (e.g., uneven root growth, abnormal fruit development) or even crop damage. Our ≥98% pure IAA ensures that every application delivers a precise dose of active ingredient, eliminating the risk of impurity-induced issues. This purity is particularly critical for high-value crops (e.g., fruits, vegetables, ornamental plants) where even minor growth irregularities can significantly impact market value.
2. Enhanced Bioactivity
Bioactivity— the ability of IAA to bind to plant auxin receptors and trigger physiological responses— is another strength of our product. Through advanced formulation technology, we optimize the stability and solubility of IAA, ensuring it remains active in various environmental conditions (e.g., varying pH levels, temperature fluctuations). Unlike some IAA products that degrade quickly under sunlight or high temperatures, our formulation maintains high bioactivity for extended periods, allowing plants to absorb and utilize the active ingredient efficiently. Field trials show that our IAA product induces 15-20% stronger physiological responses (e.g., root elongation, fruit set) compared to standard low-purity IAA products.
3. Wide Compatibility
Our IAA is compatible with most common agricultural inputs, including fertilizers, pesticides, and other plant growth regulators. This compatibility simplifies application for farmers, who can mix IAA with other products in a single spray or treatment, reducing labor and operational costs. It is also suitable for use in all major crop types, from field crops (wheat, corn, soybeans) to horticultural crops (tomatoes, strawberries, citrus) and ornamental plants (roses, chrysanthemums), making it a versatile solution for diverse agricultural systems.
Key Agricultural Efficacies of Indole-3-Acetic Acid (IAA)
IAA plays a pivotal role in regulating plant growth and development, with proven efficacies in multiple agricultural applications. Below are its primary functions, supported by scientific research and field validation:
1. Promotes Robust Root System Development
Root development is the foundation of healthy plant growth, as roots are responsible for absorbing water, nutrients, and minerals from the soil. Our IAA product stimulates the formation of adventitious roots and lateral roots, enhancing root density and surface area.
Application Scenarios:
Seedling Transplantation: Dipping the roots of vegetable seedlings (e.g., tomatoes, peppers, cabbage) in a 50-100 ppm IAA solution before transplanting promotes root regeneration, reducing transplant shock. Field data shows that this treatment increases seedling survival rates by 25-30% and accelerates early growth by 10-15%.
Cutting Propagation: For ornamental plants (e.g., roses, lavender) and fruit tree rootstocks, dipping the base of cuttings in a 0.1-0.2% IAA powder or 100-200 ppm IAA solution accelerates root initiation. This reduces the rooting period by 5-7 days and increases rooting rates by 35-40%, a critical advantage for commercial nurseries aiming to maximize propagation efficiency.
Field Crops: Applying a 30-50 ppm IAA foliar spray to wheat, corn, or soybeans at the seedling stage enhances root elongation and branching, improving the crop’s ability to access deep soil moisture and nutrients. This is particularly beneficial in arid or semi-arid regions, where strong root systems help crops tolerate drought stress.
2. Enhances Fruit Set and Improves Fruit Quality
Fruit set—the transition from flower to young fruit—is a critical stage that directly impacts crop yield. IAA regulates the auxin balance in plants, promoting pollen germination, ovule fertilization, and preventing premature flower and fruit drop.
Application Scenarios:
Fruit Trees: Spraying citrus (oranges, lemons), apples, pears, and peaches with a 20-50 ppm IAA solution during the flowering and early fruit development stages reduces physiological fruit drop by 15-25%. This treatment also promotes uniform fruit growth, increasing the proportion of marketable fruits (e.g., size, shape, color) by 10-15%. For example, in citrus orchards, IAA application has been shown to increase yield by 8-12% while improving juice content and sugar-acid ratio.
Vegetables: For tomatoes, strawberries, and cucumbers, applying a 10-30 ppm IAA spray at flowering enhances fruit set, especially under unfavorable weather conditions (e.g., low temperatures, high humidity) that inhibit pollination. This results in more uniform fruit size and higher yields—strawberry growers, for instance, report a 12-18% increase in marketable fruit yield after IAA treatment.
3. Regulates Vegetative Growth and Prevents Lodging
Excessive vegetative growth (e.g., tall, weak stems) can lead to lodging (crop falling over due to wind or rain) in field crops, reducing yield and quality. IAA helps balance vegetative and reproductive growth by promoting stem thickening and strengthening cell walls.
Application Scenarios:
Grain Crops: Spraying wheat, rice, and barley with a 20-40 ppm IAA solution at the booting stage (before stem elongation) reduces internode length and increases stem diameter. This enhances the crop’s resistance to lodging, with field trials showing a 30-40% reduction in lodging incidents. Additionally, this treatment redirects nutrients from stems to grains, improving thousand-grain weight by 5-8%.
Ornamental Plants: For potted plants (e.g., chrysanthemums, poinsettias), a low-concentration (5-10 ppm) IAA spray controls excessive height, promoting a compact, bushy growth habit that is more desirable for the ornamental market. This eliminates the need for harsh growth retardants, reducing potential phytotoxicity risks.
