1、Recent advances in the chemistry of nitrogen, phosphorus and potassium

These fertilizers contain N in either ammonia or ammonium forms, which are readily available to crops owing to their high water solubility. When N-reduced fertilizers are applied to soil, the soil colloidal complex immediately absorbs NH +4.

2、Nutrient Management :: Fertilizers

There are two potassium fertilizers viz., muriate of potash (KCI) and sulphate of potash (K2S04). They are water soluble and so are readily available to plants.

3、Fertilizer Types and Calculating Application Rates

However, diferent crops in separate fields will require varying rates of the major nutrients – nitrogen (N), phosphate (P2O 5), and potassium (potash, K 2O) – due to variations in soil types, soil test phos-phorus and potassium levels, and nutrient ranges of diferent crops.

Ammonium Sulfate vs. Potash

Ammonium sulfate is a nitrogen fertilizer that also contains sulfur, making it ideal for promoting plant growth and improving soil quality. Potash, on the other hand, is a potassium fertilizer that helps plants develop strong roots, resist disease, and improve overall health.

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To sum up, ammonium chloride fertilizer is a commonly used fertilizer type, which is rich in nitrogen, easy to absorb and utilize, and relatively low in price. However, it should be noted that ammonium chloride fertilizer contains chlorine, and excessive use should be avoided.

Comparing Different Forms of Potassium Fertilizers for Gardens

In this article, we will explore the most common potassium fertilizers used in gardening, compare their characteristics, benefits, drawbacks, and best application practices. By the end, you should have a clearer idea of which potassium fertilizer suits your garden’s needs best.

Comprehensive Guide to Nitrogen, Phosphate, and Potassium Fertilizers

Chemical fertilizers are characterized by high nutrient content and fast effects, but they also have some limitations, such as potential negative impacts on soil structure. This article will introduces nitrogen fertilizers, phosphorus fertilizers, and potassium fertilizers first.

Potassium Fractions in Soils as Affected by Monocalcium Phosphate

The influence of ammonium sulfate (AS), monocalcium phosphate (MCP), and potassium chloride application on K fractions in three typical soils of China was evaluated during 90-d laboratory soil incubation.

Potassium fertilizer: potash or potassium sulfate?

To understand whether chloride in fertilizer is a specific problem, total salt, potassium content and growth conditions must be evaluated.

What Are Different Types of Fertilizer?

It can be used as base fertilizer or topdressing. Because potassium chloride fertilizer contains a large amounts of chloride, it will affect the growth of seed germination and seedling. When it is used as base fertilizer, it should be applied to arable soil 10-15 days before sowing.

Potassium fertilizer and ammonium chloride are two commonly used chemical fertilizers that play vital roles in agricultural production. To ensure farmers select and apply these fertilizers correctly, it is essential to understand their key differences. The following points outline the distinctions:

I. Composition and Function

1. Potassium Fertilizer

• Potassium Content: Primarily composed of potassium, which is critical for plant growth. Potassium promotes root development, enhances water and nutrient absorption, and improves disease resistance and drought tolerance in plants.
• Mechanism: Potassium regulates ion balance in plants, stabilizes cell membranes, and participates in the synthesis and transport of plant hormones, thereby supporting healthy growth.

2. Ammonium Chloride

• Nitrogen Content: A nitrogen-based fertilizer, ammonium chloride provides nitrogen, a key element for protein synthesis, chlorophyll formation, and photosynthesis in plants.
• Mechanism: Nitrogen from ammonium chloride boosts leaf growth and differentiation, improves photosynthetic efficiency, and increases crop yields.

II. Application Methods and Precautions

1. Potassium Fertilizer

• Application: Available in solid granular or liquid form. Solid particles can be spread directly onto soil, while liquid forms are mixed with water for irrigation.
• Precautions: Avoid use on sensitive crops like potatoes or tobacco. Excessive application may lead to soil salinization.

2. Ammonium Chloride

• Application: Also available as solid granular or liquid. Solid particles are spread directly, and liquids are diluted for irrigation.
• Precautions: Similar to potassium fertilizer, avoid overuse on sensitive crops and prevent soil salinization.

III. Soil Adaptability and Environmental Impact

1. Potassium Fertilizer

• Soil Adaptability: Suitable for all soil types (acidic, neutral, alkaline). Specific formulations (e.g., potassium sulfate) may be optimal for acidic soils.
• Environmental Impact: Helps mitigate soil degradation caused by excessive nitrogen use (e.g., salinization and acidification). Improves soil structure, water retention, and aeration.

2. Ammonium Chloride

• Soil Adaptability: Best for neutral to slightly alkaline soils. May lower soil pH in acidic conditions, requiring cautious use.
• Environmental Impact: Can cause ammonia volatilization, increasing atmospheric ammonia levels. Excessive use may lead to soil salinization and groundwater contamination.

IV. Economic Costs and Benefits

1. Potassium Fertilizer

• Cost: Higher upfront cost, but long-term efficiency reduces reliance on other nutrients. Improves crop quality and yield, enhancing economic returns.
• Benefits: Enhances pest and drought resistance, reducing pesticide use. Boosts soil fertility, microbial activity, and organic matter content.

2. Ammonium Chloride

• Cost: Lower price, but excessive use wastes resources and harms the environment. Effective for improving crop yields and quality.
• Benefits: Increases nitrogen utilization efficiency, reducing fertilizer needs. Stimulates soil microbial activity and organic matter.

V. Safety and Environmental Regulations

1. Potassium Fertilizer

• Safety: Safe when used as directed. Skin contact or ingestion may cause irritation. Follow safety protocols during handling.
• Environmental Regulations: Eco-friendly when applied properly. Avoid overuse to prevent environmental stress.

2. Ammonium Chloride

• Safety: Safe under normal use. Skin contact or ingestion may cause irritation. Adhere to safety guidelines.
• Environmental Regulations: Production may release harmful byproducts (e.g., ammonia gas). Proper disposal of unused product is required to avoid pollution.

While both potassium fertilizer and ammonium chloride are essential for agriculture, they differ significantly in composition, function, application, soil adaptability, environmental impact, cost, and safety. Farmers should consider soil conditions, crop requirements, and environmental protection to ensure sustainable production and ecological balance.