1、Potassium Fertiliser

In 1986, a liquid potassium silicate, which is guaranteed by 12% of water-soluble SiO 2 and 6.0% of water-soluble potassium, appeared as a readily available silicate fertilizer.

2、Water

This article will introduce the method of measuring the potassium content of fully water-soluble compound fertilizer. We will list all the equipment needed and the detailed steps of each step.

3、Potassium in fertilizers

Solid NPK fertilizer solutions are filtrated into a 100 mL volumetric flask and the filter paper is rinsed well with deionized water. Afterwards, 2 mL 20% NaOH is pipetted to the solution and the flask is then filled up to the mark with deionized water.

4、Water

Water-soluble potassium sulphate for fertigation and foliar application Solubility: (K SO ) = 8.5 % at 10 °C (50 °F) (K SO ) = 10.0 % at 20 °C (68 °F)

5、Potassium Sulfate

Potassium sulphate (SOP) – is a water-soluble potassium sulfur-containing chlorine-free fertilizer. Potassium sulphate is used for basic, pre-sowing application and for feeding various agricultural and ornamental plantings grown in open and protected ground on all types of soil.

Fertilizers: Potassium Fertilizers

Potassium thiosulfate (KTS) is a neutral to basic, clear liquid solution that can be applied by drip, sprinkler, foliar, or flood irrigation. When used as a foliar fertilizer, KTS should first be diluted with water before applying.

Recent advances in the chemistry of nitrogen, phosphorus and potassium

Environmentalists have labeled fertilizer as one of the main sources of soil, water, and air pollution through nitrate (NO -3) leaching into groundwa-ter, nitrous oxide (N 2O) emission into the atmosphere, heavy metals released into soils, and N and P runoff into water bodies (Chien et al., 2009).

2026 Water

Explore the 2024 analysis of potassium in water-soluble fertilizers, focusing on composition, regulatory standards, and future trends for sustainable agriculture.

Potassium Fertilizer

Potash ores are the most important industrial source of potassium that contains two typical water-soluble minerals of alkali halides: 1) KCl as a valuable mineral (sylvite) for producing potassium fertilizers, and 2) NaCl as a gangue mineral (halite).

Solubility of various K fertilizers at different temperatures.

Potassium chloride (KCl) is the most soluble potassium fertilizer up to a temperature of about 20°C (fig. 1); at higher temperatures potassium nitrate (KNO 3 ) is more soluble.

Potassium fertilizer solution is a common type of agricultural irrigation water, with potassium as its primary component. It plays a crucial role in plant growth and development, enhancing disease resistance, promoting root development, and increasing fruit yield. Below are detailed insights into potassium fertilizer solution:

1. Primary Components of Potassium Fertilizer Solution

The main chemical component is potassium chloride (KCl), an inorganic salt fertilizer dissolved in water for plant absorption. Additionally, it may contain trace minerals like calcium, magnesium, and sodium, which also influence plant growth.

2. Applications of Potassium Fertilizer Solution

Primarily used for farmland irrigation, especially in arid regions or soils deficient in potassium. It effectively boosts soil potassium levels, improves soil structure, and enhances plant stress resistance. Suitable for cultivating flowers, fruit trees, vegetables, and maintaining lawns or grasslands.

3. Usage Guidelines

• Early Growth Stage: Apply higher-potassium solutions to promote development.
• Late Growth Stage: Reduce dosage if soil potassium is sufficient to avoid waste.
• Avoid Mixing With Nitrogen Fertilizer: Prevents nitrogen gas formation, which can kill plants.

4. Precautions

• Concentration: Keep low (e.g., 0.5 g KCl/L) to avoid poisoning plants.
• Timing: Apply in the morning or evening to minimize evaporation.
• Dosage: Adjust based on crop type, soil, and climate (typically 5–10 kg KCl/mu).
• Application Method:
  • Direct root irrigation for most crops.
  • Foliar spraying for specific crops (e.g., grapes, strawberries) to improve quality.
• Environmental Protection: Avoid overuse to prevent soil acidification and pollution.

5. Benefits for Plants

• Enhanced Disease Resistance: Stimulates synthesis of sugars and proteins.
• Root Development: Strengthens root systems for better nutrient/water uptake.
• Increased Yield: Boosts photosynthesis efficiency and fruit quality.
• Flower Bud Differentiation: Improves adaptation to climate/pest challenges.
• pH Regulation: Neutralizes soil acidity, fostering optimal growth conditions.

Potassium fertilizer solution is a vital agricultural resource. Scientific application optimizes crop nutrition, promotes healthy growth, and balances ecological sustainability, ultimately contributing to agricultural productivity and environmental preservation.