1、Effect of ammonium and nitrate nitrogen fertilizers on wheat yield in

Research results continuously show that different plants have different preference to nitrate and ammonium N. Large numbers of solution cultures indicated that the uptake amount and degree of nitrate N and ammonium N depended on plant types and environmental factors.

2、Enhancing Crop Nitrogen Efficiency: The Role of Mixed Nitrate and

Improving nitrogen use efficiency in crops is essential for sustainable agricultural development. This review discusses how a balanced mixture of nitrate (NO 3−) and ammonium (NH 4+) nitrogen can significantly enhance plant growth and nitrogen use efficiency.

3、The Application Methods and Soil Relationships of Ammonium Nitrogen

The results showed that after 20 years of fertilizations, the soil fixed ammonium content, maximum ammonium fixation capacity and ammonium fixation capacity did not changed significantly among treatments, but varied significantly among different soil layers.

4、Can nitrate‐reducing ammonifiers increase nitrogen retention in soil

One possibility is to improve the retention of soil N by increasing the time N stays in the form of ammonium, as ammonium adsorbs clay particles and soil organic matter.

Ammonium Salts, Nitric Acid, and Nitrates

As mentioned previously, ammonia is the source of more than 95% of the chemical nitrogen fertilizer currently produced in the world. Ammonia may be used directly as a fertilizer (see chapter X) or converted to ammonium salts, nitrates, or urea.

Frontiers

Most studies have examined the effect of the nitrogen application rate on soil health, overlooking on the nitrogen forms (ammonium and nitrate). Ammonium and nitrate are the main inorganic nitrogen forms absorbed by plants, playing a crucial role in the growth and development of plants.

Interaction of ammonium nutrition with essential mineral cations

Agricultural soils are generally nitrogen (N) deficient, and thus soils need to be supplemented with fertilizers. Ammonium (NH4+) is a major inorganic N source. However, at high concentrations, NH4+ becomes a stressor that inhibits plant growth.

Effects of ammonium

We hypothesized that effects of NH 4+ -based N addition on soil nitrification and nitrogen gas emissions would be dependent on the impact of fertilizer N on soil pH.

Effect of ammonium and nitrate nitrogen fertilizers on wheat

Results showed that differences in two varieties of each N form or combinations were much less than those of N forms. As a whole, wheat responses to nitrate N were better in most cases and in few cases, there was no significant difference between nitrate N and ammonium N on wheat yield.

A Comparative Study of Ammonium Sulfate and Other Nitrogen Fertilizers

In this guide, we will explore the comparison between ammonium sulfate and other nitrogen fertilizers, assessing their effects on crop yield, soil health, and sustainable farming techniques.

In the field of agriculture, ammonium salts and ammonium nitrogen fertilizers are two closely related concepts that together constitute the two main types of nitrogen fertilizers. Below, I will provide a detailed introduction to the relationship between these two concepts:

1. Ammonium Salts

1. Definition and Composition: Ammonium salts are nitrogen-containing compounds with the chemical formula NH₄X, where X can be an inorganic or organic anion. Common ammonium salts include ammonium nitrate (NH₄NO₃), ammonium sulfate ((NH₄)₂SO₄), and ammonium chloride (NH₄Cl). These salts are complex compounds composed of nitrogen, hydrogen, and corresponding cations and anions.

2. Properties and Uses: Ammonium salts have high solubility and good water solubility, allowing them to dissolve rapidly in water and be absorbed by plants. Due to their high solubility, ammonium salts are commonly used in agriculture to produce various fertilizers, such as nitrogen fertilizers and compound fertilizers.

2. Ammonium Nitrogen Fertilizers

1. Definition and Composition: Ammonium nitrogen fertilizers refer to nitrogen fertilizers that contain ammonium salts as their primary component. Ammonium salts are one of the basic components of ammonium nitrogen fertilizers, but not all ammonium salts can be used to prepare ammonium nitrogen fertilizers. For example, ammonium sulfate, although an ammonium salt, cannot be directly used as an ammonium nitrogen fertilizer due to its crystallization water content.

2. Classification and Characteristics: Ammonium nitrogen fertilizers can be divided into two main types based on their production processes: urea and ammonium nitrate. Urea (CO(NH₂)₂) is a common ammonium nitrogen fertilizer that releases nitrogen through the decomposition of urea into ammonia gas and carbon dioxide gas. Ammonium nitrate (NH₄NO₃) releases nitrogen through the decomposition of nitric acid into ammonia gas and oxygen. Both types of ammonium nitrogen fertilizers are characterized by their rapid release of nitrogen, which can be quickly absorbed and utilized by plants.

3. Usage and Effects: Ammonium nitrogen fertilizers are widely used in agricultural production. They provide a large amount of nitrogen to meet the growth needs of crops. Additionally, ammonium nitrogen fertilizers have the advantages of quick action and short duration. excessive use of ammonium nitrogen fertilizers may lead to soil acidification and groundwater pollution. it is necessary to properly control the dosage and application methods when using ammonium nitrogen fertilizers.

3. Relationship and Impact

1. Interdependence: There is a close relationship between ammonium salts and ammonium nitrogen fertilizers. Ammonium salts are one of the basic raw materials for preparing ammonium nitrogen fertilizers, while ammonium nitrogen fertilizers are one of the main applications of ammonium salts. This interdependent relationship makes both play important roles in agricultural production.

2. Mutual Enhancement: Through reasonable production and use, the interaction between ammonium salts and ammonium nitrogen fertilizers can promote the development of agricultural production. For example, the appropriate application of ammonium salts can increase the nitrogen content in the soil, thereby improving the growth rate and yield of crops; while the appropriate application of ammonium nitrogen fertilizers can accelerate the absorption and utilization of nitrogen by crops, enhancing their quality and disease resistance.

3. Reciprocal Constraints: Despite their close relationship, ammonium salts and ammonium nitrogen fertilizers also have mutually constraining factors in agricultural production. Excessive use of ammonium salts may lead to soil acidification and groundwater pollution, thereby limiting further development and application of ammonium salts; while excessive use of ammonium nitrogen fertilizers may result in overly rapid crop growth and reduced quality, affecting the market value of the crops. it is necessary to reasonably control the usage and application methods of ammonium salts and ammonium nitrogen fertilizers in agricultural production.

ammonium salts and ammonium nitrogen fertilizers play important roles in agricultural production. They have a close relationship, being interdependent and mutually enhancing, while also subject to reciprocal constraints. To achieve the goals of sustainable agricultural development, it is essential to reasonably control the usage and application methods of ammonium salts and ammonium nitrogen fertilizers, fully leveraging their positive effects while avoiding potential negative impacts.