1、Nitrogen fertilizer classification using multivariate fingerprinting

Results present the possibility to correctly (94%) classify N fertilizers using multivariate fingerprinting with linear discriminant analysis.

2、Classification, composition and properties of major nitrogenous fertilizers

PDF | On Mar 31, 2021, Anil Kumar Singh published Classification, composition and properties of major nitrogenous fertilizers | Find, read and cite all the research you need on ResearchGate

3、Classification of nitrogen fertilizers

Production of nitrogen fertilizers Nitrogen fertilizers are produced by binding atmospheric nitrogen [N2] by any one of the following process.

4、Classification and Application Methods of Nitrogen Fertilizers

This article details the classification and selection methods of nitrogen, phosphorus and potassium (NPK) fertilizers to help readers understand the characteristics and uses of each fertilizer and provide practical suggestions for selecting NPK fertilizers.

Global crop

The N fertilization data was segmented by 21 crop groups, 13 fertilizer types, and 2 fertilization placements. Comparison analysis showed that our dataset is aligned with previous estimates.

Nitrogen Phosphorus Potassium (NPK) Fertilizer Classification and

This article details the classification and selection methods of nitrogen, phosphorus and potassium (NPK) fertilizers to help readers understand the characteristics and uses of each fertilizer and provide practical suggestions for selecting NPK fertilizers.

Classification of nitrogen fertilizer

Commonly used nitrogen fertilizer varieties can be divided into four types: ammonium, nitrate, ammonium nitrate and amide nitrogen fertilizers. Various types of nitrogen fertilizers...

Detailed Classification Of Nitrogen Fertilizers

Sodium nitrate, calcium nitrate, etc. are all quick acting nitrogen fertilizers that are easily soluble in water, have strong hygroscopicity, are easy to clump, and have combustion support properties.

A classification system for describing N‐fertilizer performance in

Abstract Wheat (Triticum aestivum L.) crops in the inland Pacific Northwest demand nitrogen (N) fertilizers at high levels to achieve yield and grain protein objectives.

Fertilizer Classification

Fertilizers are classified in several ways. They are classified according to whether they provide a single nutrient (e.g., K, P, or N), in which case they are classified as "straight fertilizers."

Nitrogen fertilizers are indispensable in agricultural production, playing a crucial role in the growth and development of plants. There are multiple ways to classify nitrogen fertilizers, including based on their chemical properties, physical forms, and application methods. Below is a detailed explanation of the classification methods for nitrogen fertilizers:

1. Classification by Nitrogen Form

• Ammonium Salts: This category includes urea, ammonium nitrate, and ammonium sulfate. They are one of the primary forms of nitrogen fertilizers. Ammonium salts are easily absorbed by plants and provide quick effects. excessive use may lead to soil acidification, affecting the availability of other nutrients.
• Organic Nitrogen Fertilizers: These include ammonia water, urea, and calcium nitrate. Organic nitrogen fertilizers decompose slowly in the soil, providing long-lasting effects. they require longer time to take effect and are more costly.
• Inorganic Nitrogen Fertilizers: This group includes ammonium chloride, potassium nitrate, and ammonium phosphate. They act quickly but may cause salt accumulation in the soil, impacting plant growth.

2. Classification by Source

• Synthetic Nitrogen Fertilizers: Produced through artificial synthesis, such as urea and ammonium nitrate. These are relatively inexpensive but may generate harmful substances during production.
• Natural Nitrogen-Containing Materials: Includes animal and plant residues, kelp, etc. These sources are abundant but have lower fertilizer efficiency.

3. Classification by Application Method

• Solid Nitrogen Fertilizers: Examples include urea and ammonium nitrate. Easy to store and transport but require mixing with water for application.
• Liquid Nitrogen Fertilizers: Such as liquid urea and liquid ammonium nitrate. Convenient for application but more expensive.
• Granular Nitrogen Fertilizers: Including urea granules and ammonium nitrate granules. Easy to store, transport, and provide stable effects.
• Slow/Controlled-Release Nitrogen Fertilizers: Release nitrogen slowly or continuously over time. These improve fertilizer utilization, reduce environmental pollution, and control dosage effectively.

4. Classification by Crop Type

• Nitrogen Fertilizers for Grain Crops: Urea and ammonium nitrate are commonly used for grain crops.
• Nitrogen Fertilizers for Cash Crops: Potassium nitrate and ammonium dihydrogen phosphate are tailored for cash crops.
• Nitrogen Fertilizers for Vegetables: Calcium nitrate and potassium nitrate are suitable for vegetable cultivation.
• Nitrogen Fertilizers for Fruit Trees: Urea and ammonium nitrate are applied to fruit trees.

5. Classification by Dosage

• Macronutrient Fertilizers: Contain higher nitrogen levels, such as urea and ammonium nitrate, suitable for heavy applications.
• Micronutrient Fertilizers: Contain lower nitrogen levels, like zinc sulfate and borax, suitable for light applications.

nitrogen fertilizers can be classified in diverse ways, each with specific advantages, disadvantages, and applicable scenarios. In actual agricultural practice, the choice of nitrogen fertilizer type and application method should consider crop requirements, soil conditions, and environmental factors to achieve optimal fertilization outcomes.