Water-soluble fertilizer (WSF) is a fully water-soluble, multi-component compound fertilizer. It delivers efficient nutrient delivery through irrigation systems (such as drip irrigation and sprinkler irrigation) or foliar spraying, and is widely used in modern agriculture, horticulture, and protected agriculture.

DEFINITION AND FEATURES

Solubility and Absorption Efficiency

It is 100% water-soluble, leaving no residue. Nutrients are present in ionic form, allowing direct crop absorption and utilization rates of 80%-90% (compared to the 30%-40% for traditional fertilizers).

It delivers rapid results (3-5 days) and is suitable for emergency nutrient deficiency treatment or critical growth periods (such as flowering and fruiting).

Environmental Protection and Precision

It reduces soil compaction and pollution, and allows for precise fertilization through integrated water and fertilizer application, saving water, fertilizer, and labor.

MAIN TYPES

Water-soluble macronutrient fertilizers: Containing nitrogen, phosphorus, and potassium (such as a 20-20-20 formula). Suitable for drip irrigation or foliar spraying. Water-soluble fertilizers containing trace elements: Contains calcium, magnesium, and iron, mostly in a chelated form to prevent precipitation.

Organic water-soluble fertilizers: Adds humic acid and amino acids to promote root development and stress resistance.

APPLICATIONS

Protected agriculture: Greenhouse vegetables, soilless cultivation, and flowers.

Field crops: Cash crops that require rapid fertilization (such as watermelon and tomatoes).