Application of Polyaspartic Acid in Agriculture

Polyaspartic acid (PASP) is an amino acid polymer, the amide bond on the main chain is easily broken by microorganisms and fungi, and finally degraded into water and carbon dioxide, which are harmless to the environment, so it is recognized as non-toxic, non-polluting, biodegradable and environmentally friendly green chemicals without any side effects.

Polyaspartic acid is a water-soluble macromolecular polymer containing active groups such as carboxyl and amino groups. It has strong dispersing, chelating and adsorption functions, which can enhance the overall absorption of nitrogen, phosphorus, potassium and medium and trace elements by plants. Therefore, it has broad application prospects as a synergist in the field of agricultural fertilizers.


Effect of Polyaspartic Acid in Agriculture

The carboxyl group contained in polyaspartic acid itself can quickly combine with the nutrient ions and exchange with the hydrogen ions secreted by the root system to complete the process of the nutrient ions being absorbed by the crops.

At the same time, it has cyclability and can form a chelate with divalent ions, making the medium and trace elements Mg2+, Fe2+, and Zn2+ into an easily absorbed state.

The two functions enable polyaspartic acid to be used as a fertilizer synergist, strengthen the absorption of nitrogen, phosphorus, potassium and trace elements by crops, realize the slow and controlled effect of fertilizers, and increase crop yield and quality.

1. Improve Fertilizer Efficiency Utilization Rate

As a new fertilizer synergist, polyaspartic acid can enrich nitrogen, phosphorus, potassium and trace elements, so that plants can use fertilizer more effectively and improve fertilizer efficiency utilization rate.

The combined application of PASP and urea promoted the absorption of nitrogen by green vegetables, the total nitrogen absorption increased by 10.8%-18.2%, and at the same time, the loss of nitrogen fertilizer was reduced, and the retention of nitrogen fertilizer in the soil was increased. A significant contribution to soil nitrogen pool.

2. Improves the Availability of Soil Nutrients

Due to the good chelation effect of PASP, its absorption promotion rate can reach 5-10 times, so it can improve the availability of soil nutrients. After treating the soil with PASP, the availability of nitrogen, phosphorus, potassium, calcium, magnesium and other nutrients and trace elements such as boron, molybdenum and manganese were significantly improved. PASP can inhibit the volatilization of applied nitrogen fertilizer in the form of ammonia nitrogen; it can reduce the fixation and deposition of phosphorus fertilizer in the soil.

3. Promote Root Growth and Increase Resistance Ability

Polyaspartic acid can effectively promote the development of crop roots, make them grow longer roots and more root hairs, increase the surface area of roots, improve the ability of crops to absorb nutrients, and enhance the resistance of crops to lodging, drought, cold, cold, etc. Disease resistance and other stress resistance.

4. Improve Soil Condition

Polyaspartic acid can reduce the adverse effects of excessive fertilization on the environment, and can also activate the nutrient elements in the soil in a fixed state, which not only improves the utilization rate of fertilizers but also improves the soil quality.

The remediation effect of PASP on heavy metal-contaminated soil is very significant. It is found that PASP as a complexing agent has a good extraction rate of metal ions Cd, Zn and Ca, all of which are more than 50%.

Practical Application of PASP

Use Technology

PASP is mainly used together with fertilizer in agriculture. There are two main methods:

One is to mix PASP with fertilizer and use it when fertilizing. For example, use zeolite, humic acid, peat, and other carriers to granulate together with PASP to make solid granular fertilizer synergists and mix them with fertilizers.

The second is to use liquid spraying technology in fertilizer production or to produce fertilizers containing PASP through spraying tower granulation.

Polyaspartic acid is completely biodegradable, green and pollution-free. As a fertilizer synergist, it can not only promote the absorption of nutrients in grains, vegetables, fruits, flowers and crops, but also promote root growth, increase yield, strengthen plants, enhance plant resistance, achieve the effect of deep roots and leaves, and improve quality.

Polyaspartic acid is a recognized green and environmentally friendly fertilizer synergist and has broad market prospects.


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