How much do you know about calcium ammonium nitrate?

How much do you know about calcium ammonium nitrate?

An in-depth analysis of the "top dressing artifact" - calcium ammonium nitrate!

Calcium ammonium nitrate is a nitrogen fertilizer commonly used in early Europe, North America and temperate regions. It appears as white particles and has a fertilizer effect that is quickly absorbed by plants. A large number of facts show that this feature is suitable for the growth habits of many crops. Calcium ammonium nitrate is very soluble in water. The main raw material is made by mixing molten ammonium nitrate and limestone powder in proportion. It has the physical characteristics of low hygroscopicity, not easy to agglomerate, and good dispersion.

Although calcium ammonium nitrate contains calcium, its main nutrients are nitrate nitrogen and ammonium nitrogen. It is a high-quality fertilizer of available nitrogen type. Moreover, calcium ammonium nitrate is an upgraded substitute for ammonium nitrate. Due to the flammable and explosive characteristics of ammonium nitrate, it is subject to stricter control during production, operation, transportation, and use, and the risk of accidents is relatively high. Calcium ammonium nitrate is produced through different methods. It is much more stable than ammonium nitrate in terms of chemical properties and has the function of supplementing calcium in terms of functionality. It is a high-quality substitute for ammonium nitrate.

The principle of top dressing of calcium ammonium nitrate

Plants transport nitrate nitrogen and calcium ions to the rhizomes, mosaics, and fruits through transpiration from the roots for direct absorption. This is the principle of calcium ammonium nitrate's ability to quickly replenish nitrogen and calcium, because it is also known as the "top dressing artifact."

According to farmers' experience, calcium ammonium nitrate fertilizer can take effect 3 hours after application, and the effect will be obvious after 3 days. Because of its fully water-soluble nature, foliar spraying is also a good choice. It can be diluted 800-1000 times into a solution and used together with other pesticides or foliar fertilizers. It has strong compounding properties.

Nutritional composition of calcium ammonium nitrate

The components of calcium ammonium nitrate are nitrate nitrogen, ammonium nitrogen and calcium elements. There are certain differences in the nutrient composition of products from different manufacturers. The total content of nitrate nitrogen and ammonium nitrogen is generally between 15.5-27%, and the content of calcium is around 19-20%. In addition to quickly replenishing nitrate nitrogen and ammonium nitrogen, it can also supplement the calcium required for crop growth. Moreover, calcium ammonium nitrate generally contains small amounts of iron, magnesium, boron and other elements, and the element content is relatively rich.

Properties of Calcium Ammonium Nitrate

Calcium ammonium nitrate is also one of the high-quality compound fertilizers. It has little impact on the soil and leaves a small amount of residual acid, alkali and salt ions in the soil. It is conducive to the dissociation of some nutrients in the soil and can improve fertilizer utilization. And quickly provide effective nitrogen components that can be absorbed by crops.

Benefits of calcium ammonium nitrate top dressing

1. Little impact on soil acidity and alkalinity. Calcium ammonium nitrate is a weakly acidic compound fertilizer. Since nitrate nitrogen and ammonium nitrogen have strong dissociation and high absorption rate in the soil, the probability of causing a large amount of acid ions to remain in the soil is relatively small. After the calcium carbonate component is decomposed in the soil, it will only release carbon dioxide and calcium ions that can be absorbed, and it is difficult to have a direct impact on the pH value of the soil. Therefore, calcium ammonium nitrate has a relatively small impact on the acidity and alkalinity of the soil.

2. The amount of acid, alkali, ions and salt ions remaining in the soil is relatively small. The nitrogen components of calcium ammonium nitrate are nitrate nitrogen and ammonium nitrogen, which are highly free in the soil and easy to be absorbed by the roots of crops. Moreover, nitrate nitrogen and ammonium nitrogen can be directly absorbed by crops without being transformed by microorganisms and physical and chemical effects in the soil. The absorption speed is fast, the fertilizer efficiency response is fast, and the absorption rate is relatively high.

3. It can improve the dissociation of other ions and improve fertilizer utilization. After calcium ammonium nitrate is applied to the soil, it will increase the content of nitrate nitrogen and ammonium nitrogen in the soil. When the nitrogen content in the soil increases, it will promote the release of magnesium and phosphorus in the soil and increase the utilization of magnesium and phosphorus.