1、Intelligent detection of potassium oxide in potassium sulfate

Due to difficulty, time-consuming, high cost, and requiring chemical agents of laboratory methods, hyperspectral imaging was applied to predict potassium oxide in potassium sulfate based on...

2、Granular potassium sulfate

Potassium sulfate fertilizer contains 50% potassium oxide and 17.5% sulfur.

3、Potassium Sulfate Fertilizer

Potassium sulfate is a common potassium fertilizer in agriculture, and the content of potassium oxide is 50 ~ 52%.It can be used as base fertilizer, seed fertilizer and topdressing fertilizer. It is also an important component of compound fertilizer nutrients.

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)

Potassium Nitrate & Potassium Sulphate

It contains approximately nitrogen (N) and 46% potassium (K2O), which is preferred for plants. All the nitrogen it contains is in the form of nitrate (NO3) and can be taken up by plants immediately. Since nitrate (–) is electrically charged, it also encourages the intake of some other nutrients.

SOP vs MOP: Everything You Need To Know

About 50–52% potassium oxide (K2O) and 17–18% sulphur (S) are included in SOP. SOP is an effective source of potassium feeding because plants may easily absorb the potassium in its sulphate form. Sulphur is also an essential secondary ingredient for plant growth and development, increasing SOP’s usefulness in agricultural applications.

Potassium Fertilizers for Crop Production

Analyses of potassium fertilizers are typically reported as percent K2O (potassium oxide), a potassium form that is not actually present in fertilizers but is used as an industry standard measure. In a standard fertilizer analysis, the third number is the percent of K2O by weight in the fertilizer.

Intelligent detection of potassium oxide in potassium sulfate

Intelligent detection of potassium oxide in potassium sulfate fertilizer using hyperspectral imaging and artificial neural networks

Intelligent detection of potassium oxide in potassium sulfate

Due to difficulty, time-consuming, high cost, and requiring chemical agents of laboratory methods, hyperspectral imaging was applied to predict potassium oxide in potassium sulfate based on its visible and near-infrared reflectance.

Potassium oxide

Normally, potassium chloride, potassium sulfate, or potassium carbonate is used as a fertilizer source for potassium. The percentage of K 2 O given on the label only represents the amount of potassium in the fertilizer if it was in the form of potassium oxide.

Potassium sulfate fertilizer is a common chemical fertilizer primarily used to supplement plants with essential potassium. Potassium is one of the vital nutrients for plant growth, playing a critical role in processes such as growth, flowering, and fruit maturation. the rational use of potassium sulfate fertilizer is significant for improving crop yield and quality.

I. Composition of Potassium Sulfate Fertilizer

The main chemical component of potassium sulfate fertilizer is potassium sulfate (K₂SO₄), a white crystalline or powdery substance. During production, potassium sulfate is mixed with a specific ratio of potassium oxide (K₂O) to enhance the fertilizer’s stability and solubility. Potassium oxide is a white, solid granular material with a high melting point and thermal stability.

II. Potassium Content in Potassium Sulfate Fertilizer

The potassium content of potassium sulfate fertilizer refers to the amount of potassium oxide (K₂O) present in 100 grams of the fertilizer. According to national standards, the potassium content typically ranges from 30% to 60%, depending on the formulation and manufacturing process. Generally, higher potassium content indicates greater availability of potassium for plant nutrition.

III. Application of Potassium Sulfate Fertilizer

1. Application Methods:

   • Broadcasting: Evenly spreading the fertilizer over the soil surface, followed by incorporation.
   • Ditch/Furrow Application: Placing the fertilizer in irrigation ditches or furrows before covering with soil.
   • Hole/Spot Application: Adding the fertilizer directly into planting holes before covering with soil.

2. Timing:

   • Apply before sowing to improve seed germination and seedling growth.
   • Apply during the growth period to meet potassium demands.
   • Apply after harvest to replenish soil potassium levels.

3. Dosage:

   • The recommended application rate is 5–10 kilograms per mu (0.067 hectares) of arable land, adjusted based on crop type, soil fertility, and climate. Excessive use may lead to soil salinization and hinder plant growth.

IV. Precautions for Use

1. Avoid mixing with alkaline fertilizers to prevent reduced effectiveness.
2. Do not apply during hot seasons to avoid nutrient loss due to volatilization.
3. Keep away from water sources to prevent groundwater contamination.
4. Avoid applying immediately after rain to prevent excessive soil moisture, which affects nutrient absorption.
5. Refrain from heavy application during early growth stages to avoid root burn.

V. Storage and Transportation

Store potassium sulfate fertilizer in a cool, dry, and well-ventilated area, protected from sunlight and rain. During transportation, ensure moisture and rainproof measures to maintain quality.

VI. Environmental Impact

Rational use of potassium sulfate fertilizer improves crop productivity while minimizing environmental pollution. excessive use may cause soil degradation and water eutrophication. To protect ecosystems, prioritize scientific fertilization and reduce unnecessary chemical inputs.

potassium sulfate fertilizer is a critical agricultural input. Understanding its potassium content, application methods, and precautions ensures effective use, supporting sustainable agriculture and enhanced food security.