L-Proline

L-Proline: A Functional Amino Acid Enhancing Stress Tolerance and Crop Resilience

Item	Specification
Appearance	powder
Active Ingredient	L-Proline
Content	≥99%

Enhances Stress Resistance：Helps crops tolerate drought, salinity, heat, cold, and other abiotic stresses.
Supports Osmotic Adjustment：Maintains cellular water balance under adverse environmental conditions.
Protects Plant Metabolism：Supports the stability of proteins, enzymes, and cellular metabolism during stress.
Promotes Stress Recovery：Helps crops recover more rapidly after environmental stress.

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Details

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L-Proline is a naturally occurring amino acid that plays an essential role in plant stress adaptation and osmotic regulation. It helps maintain cellular water balance, protects metabolic activity, and improves crop tolerance to drought, salinity, temperature fluctuations, and other abiotic stresses. Produced through fermentation with a purity of ≥99%, it is suitable for fertilizer formulations and direct crop applications.

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Benefits

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•Enhances tolerance to abiotic stresses

•Supports osmotic regulation

•Protects cellular metabolism

•Maintains plant vigor under stress

•Promotes recovery after stress

•Supports photosynthetic performance

•Highly soluble and easy to formulate

•Suitable for foliar spray, fertigation, and fertilizer formulations

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Field Application Cases

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DIRECT APPLICATION

Applied before or during environmental stress to improve drought tolerance, salinity resistance, and crop recovery.

CONVENTIONAL FERTILIZER ADDITIVE

Used in stress-relief fertilizers designed for heat, drought, salinity, and low-temperature conditions.

FUNCTIONAL FERTILIZER ADDITIVE
Combined with glycine betaine, seaweed extracts, and potassium fertilizers to formulate abiotic stress management products.

Recommended Application

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Application Method	Crop / Scenario	Application Stage	Dosage	Dilution / Preparation
Raw Material Addition	Anti-stress fertilizers	All crops	0.5–2%	Adjust according to formulation
Foliar Spray	All crops	Before / During stress	30–100 g/ha	Dilute with water
Foliar Spray	Fruit trees	High temperature / Drought	30–100 g/ha	Dilute with water
Drip irrigation/Fertigation	Vegetables & Fruit trees	Stress period	50–150 g/ha	Fully dissolve before application

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Honors and Qualifications

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latest News

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about us

CityMax-Global leading biostimulant partner

Since 2012, Citymax has provided high quality biostimulants -humic acid, fulvic acid, amino acids, seaweed extracts, chelated EDTA/EDDHA to growers and fertilizer producers in over 70 countries, developed more than 30 brand distributors and global OEM partnerships. As an honorary member of EBIC and China Biostimulant Committee, we hold OMRI, ECOCERT, and REACH certifications, continuously innovating to deliver sustainable agricultural solutions worldwide.