Application of Polyglutamic Acid (γ-PGA) in Agriculture

Application of Polyglutamic Acid (γ-PGA) in Agriculture

Published Nov 24, 2022 

1. Conserve water and fertilizer, improve fertilizer utilization rate

Polyglutamic acid molecules contain more than 10,000 super-hydrophilic groups—carboxyl groups, which can fully maintain the moisture in the soil, improve the bulkiness and porosity of clay-heavy soils, and improve the fertilizer and water retention of sandy soils ability.

In addition, poly-glutamic acid's polynegative electricity can effectively prevent the combination of sulfate and phosphate with calcium and magnesium elements, avoid the production of low-soluble salts, and effectively promote the absorption and utilization of nutrients.

Therefore, polyglutamic acid is widely used in granulation equipment as a nutritional synergist, and the fertilizer produced has the functions of drought resistance, water retention, and improvement of fertilizer efficiency.

2. Chelate heavy metal ions to reduce soil pollution

It has an excellent chelating effect on heavy metals such as lead, chromium, cadmium, aluminum, arsenic in the soil, and can prevent crops from absorbing too much toxic heavy metals from the soil.

As a peptide synergist added to urea, phosphate fertilizer, and potassium fertilizer, it can improve the utilization rate of nutrients, reduce chemical residues, and reduce soil pollution.

3. Stronger Roots, Improved Crop Resilience

Polyglutamic acid has a growth-promoting effect on plant roots, and can stimulate the growth of root hairs and new root systems, thereby improving the ability of the underground parts of plants to absorb nutrients.

Under adversity environments such as drought, waterlogging, and low temperature, it can effectively ensure the normal absorption of water and nutrients and buffer the damage to plant roots caused by adversities such as drought, waterlogging and cold.

4. Bidirectional pH adjustment, improve acid, alkali soil

Polyglutamic acid can effectively balance the pH value of the soil, avoid acidic soil and soil compaction caused by long-term use of chemical fertilizers, and also have a good improvement effect on saline and alkaline soil caused by seawater intrusion.

5. Improve seed germination rate, promote seedling root growth

For field crops such as wheat, corn, rice, etc., polyglutamic acid can be used as a seed dressing agent, generally diluted 5 to 10 times, and mixed with seeds before sowing, which can improve the germination rate and survival rate of seeds.

For fruit and vegetable economic crops, polyglutamic acid is used as a seedling nutrient solution, diluted 200-400 times to dip the roots or sprayed on seedbeds or seedling trays, which can promote the growth of seedling roots and improve the resistance of seedlings.

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