Polyaspartic Acid (PASP) – A Micronutrient Chelated Fertilizer That Empowers Plant Growth

I. Enhancing Micronutrient Availability to Ensure Balanced Plant Nutrition

Improving Micronutrient Solubility

Polyaspartic Acid (PASP) has a unique molecular structure that enables it to chelate with various micronutrients, such as iron (Fe), zinc (Zn), manganese (Mn), and copper (Cu).
Taking iron as an example, iron often exists in soil in poorly soluble forms such as ferric hydroxide, making it difficult for plants to absorb. After chelation with Polyaspartic Acid, the solubility of iron increases significantly. This allows iron, which would otherwise be unavailable, to remain in a soluble form within the soil solution and be readily absorbed by plant roots. As a result, common issues such as iron-deficiency chlorosis can be effectively alleviated.

Preventing Micronutrient Fixation

Soil clay minerals and organic matter can easily adsorb and fix micronutrients, reducing their bioavailability. The chelates formed between Polyaspartic Acid and micronutrients exhibit moderate stability and are less prone to fixation by soil particles.
For example, zinc readily reacts with phosphate ions in soil to form insoluble zinc phosphate. When zinc is chelated by Polyaspartic Acid, this reaction is prevented, keeping zinc in an active and available form. This ensures a continuous supply of micronutrients throughout the plant’s growth cycle and meets the plant’s demand for balanced nutrition.

II. Promoting Root Development and Enhancing Nutrient Uptake Capacity

Stimulating Root Growth

Micronutrients chelated by Polyaspartic Acid can stimulate root cell division and elongation. Zinc, for instance, plays a crucial role in auxin synthesis. When chelated with Polyaspartic Acid, zinc is more efficiently transported and utilized within the plant, promoting auxin production and stimulating root growth.
After applying Polyaspartic Acid micronutrient chelated fertilizer, plants develop more extensive root systems with increased root length and density. This expanded root network enhances soil contact, allowing plants to absorb more water and nutrients effectively.

Enhancing Root Vitality

The micronutrients supplied through Polyaspartic Acid chelation help maintain the integrity and stability of root cell membranes, thereby improving root vitality.
Iron participates in various redox reactions within root cells. Chelated iron ensures normal metabolic activity and strengthens the roots’ active nutrient uptake capacity. Meanwhile, manganese plays a vital role in root respiration. Polyaspartic Acid-chelated manganese optimizes respiratory processes, providing additional energy for nutrient absorption. This enables roots to efficiently absorb not only nitrogen, phosphorus, and potassium but also other essential micronutrients.

III. Enhancing Plant Stress Resistance to Ensure Stable and High Yields

Improving Drought Resistance

Micronutrients chelated by Polyaspartic Acid play an important role in helping plants cope with drought stress. Boron, for example, enhances the stability of plant cell walls. When chelated with Polyaspartic Acid, boron helps plants retain cellular water and reduce moisture loss under drought conditions.
Zinc is involved in the synthesis of multiple enzymes responsible for osmotic regulation. These enzymes help plants adapt to water-deficient environments. Crops treated with Polyaspartic Acid micronutrient chelated fertilizer are better able to maintain water balance, reducing growth inhibition and yield losses caused by drought stress.

Enhancing Disease Resistance

Micronutrients are critical components of the plant immune system, and Polyaspartic Acid chelated fertilizers significantly enhance disease resistance.
Copper is an essential element in many disease-resistance-related enzymes. When chelated with Polyaspartic Acid, copper improves enzyme activity, strengthening plant defenses against fungal and bacterial infections.
Manganese also plays a role in the plant’s oxidative defense system. Polyaspartic Acid-chelated manganese activates antioxidant enzymes that eliminate reactive oxygen species produced during pathogen invasion, reducing disease damage and ensuring stable and high crop yields.

IV. Improving Agricultural Product Quality and Market Competitiveness

Enhancing Fruit Quality

In fruit production, micronutrients chelated by Polyaspartic Acid have a significant impact on fruit quality. Calcium is a key component of fruit cell walls. Polyaspartic Acid-chelated calcium promotes calcium accumulation in fruits, strengthens cell walls, and reduces physiological disorders such as bitter pit in apples and blossom-end rot in tomatoes.
Boron plays a crucial role in sugar accumulation and flavor development. When chelated with Polyaspartic Acid, boron enhances sweetness, flavor, color uniformity, and fruit size consistency, thereby increasing the commercial value of fruits.

Optimizing Vegetable Nutrition

For vegetables, Polyaspartic Acid chelated fertilizer improves nutritional composition. Iron is an essential micronutrient for human health, and Polyaspartic Acid-chelated iron increases iron content in vegetables, enhancing their nutritional value.
Zinc promotes protein and vitamin synthesis in vegetables. Through Polyaspartic Acid chelation, zinc availability is improved, resulting in vegetables with richer nutritional profiles that meet consumer demand for healthy and nutrient-dense produce, ultimately enhancing market competitiveness.