1、Enhancing nitrogen use efficiency in agriculture by integrating

This review has explored a range of strategies to enhance NUE, including traditional agronomic practices such as split nitrogen application and controlled-release fertilizers, as well as precision agriculture techniques that optimize fertilizer use based on real-time soil and crop conditions.

2、Localized nitrogen management strategies can halve fertilizer use in

Using a localized nitrogen management model for wheat, maize and rice, this study estimates the environmental and economic benefits of improving nitrogen use efficiency at the county level.

3、Towards precise nitrogen fertilizer management for sustainable agriculture

Building on this historical trajectory, we propose a future direction for N fertilizer recommendation systems that prioritizes improved model accuracy, timely data availability, integration of applications, cost-effectiveness, and reduced learning curves.

4、Nitrogen fertilizers and the future of sustainable agriculture: a deep

It is a frequently observed phenomenon that the application of nitrogenous fertilizers both in developed and developing countries is applied more than what is required. The following statistics shows the application of nitrogen fertilizers in the United States as a whole.

Sustainable nitrogen management in agrifood systems

Improve nitrogen management in crop production by promoting the use of biological nitrogen fixation and encouraging the application of manure as organic fertilizer.

All About Nitrogen Fertilizers: Types, Benefits, and Application Tips

Learn all about nitrogen fertilizers, their types, benefits, and application tips to maximize crop growth while minimizing environmental impact. Find out more about the most common type of fertilizer used

Study on N application and N reduction potential of farmland in China

In this paper, we analyze the potential for nitrogen reduction through short-term, medium-term, and long-term scenario predictions. The results show that in the next 3 years, China has a reduction potential of 34.98%, but this potential is not sustainable.

Fertilizer application improvements in China

Management practices including augmenting the ratio of organic to chemical fertilizers, implementing deep application techniques and reintegrating straw into fields can bolster food production...

A Research Road Map for Responsible Use of Agricultural Nitrogen

Here we review current knowledge related to N use efficiency (NUE) in agriculture and identify research opportunities in the areas of agronomy, plant breeding, biological N fixation (BNF), soil N cycling, and modeling to achieve responsible, sustainable use of N in agriculture.

Study on N application and N reduction potential of farmland

In this paper, we analyze the potential for nitrogen reduction through short-term, medium-term, and long-term scenario predictions. The results show that in the next 3 years, China has a reduction potential of 34.98%, but this potential is not sustainable.

Nitrogen fertilizers are a critical category of agricultural inputs, primarily functioning to provide plants with essential nitrogen nutrition. As one of the three major nutrients required for plant growth, nitrogen plays a vital role in plant development, yield formation, and overall productivity. rational application of nitrogen fertilizers is of paramount importance in agricultural production.

Nitrogen fertilizers can be broadly classified into chemical synthetic fertilizers and organic fertilizers. Chemical nitrogen fertilizers, produced through industrial processes, include compounds like urea, ammonium nitrate, and ammonium chloride. Organic nitrogen fertilizers, on the other hand, derive from natural sources such as animal manure, crop residues, green manure, and other organic matter, which are converted into usable form through composting.

In agricultural practices, the application of nitrogen fertilizers should consider factors including crop type, soil conditions, climate, and fertilization objectives. Below are detailed guidelines for optimizing nitrogen fertilizer use:

1. Select Appropriate Nitrogen Fertilizer Varieties: Choose nitrogen fertilizers based on specific crop requirements. For instance, grain crops like rice and maize often benefit from urea or ammonium nitrate, while fruit trees and vegetables may require nitrate-based fertilizers. Additionally, prioritize high-purity products to avoid contaminants or heavy metals that could harm crops or soil health.

2. Timing Aligned with Crop Growth Stages: Nitrogen application should align with crop developmental phases, following the principle of "promoting early growth while controlling later stages." Early applications (e.g., during sowing or seedling stages) enhance growth and yield potential, whereas excessive nitrogen during later stages (e.g., jointing or tasseling) risks excessive vegetative growth at the expense of quality. Adjust application timing and rates according to crop-specific needs.

3. Balanced Nutrient Complementation: Combining nitrogen with other essential nutrients (phosphorus, potassium) enhances synergistic effects and improves nutrient uptake efficiency. For example, pairing nitrogen with phosphorus and potassium fertilizers promotes better utilization and overall crop development. Micronutrient supplements (e.g., boron, zinc, iron) may also be necessary to address deficiencies.

4. Optimize Nitrogen Dosage: Determine nitrogen rates based on soil fertility, crop demands, and goals. In low-fertility soils, higher rates may boost yields, while fertile soils require cautious application to prevent nutrient imbalances. Flexibly adjust dosages to match crop requirements for optimal results.

5. Application Methods Matter: Nitrogen efficacy depends on proper application techniques:

   • Basal application: Evenly distribute fertilizer over soil for long-term or bulk use.
   • Topdressing: Apply with water or irrigation directly to crop roots for targeted feeding.
   • Foliar spraying: Spray diluted solutions onto leaves for rapid absorption, but avoid overapplication to prevent leaf burn.

6. Storage and Transport Considerations: Nitrogen fertilizers are prone to moisture-induced caking or degradation, reducing effectiveness. Store in dry, well-ventilated, and cool areas with intact packaging. During transport, protect from humidity and extreme temperatures to maintain fertilizer quality.

rational nitrogen management is critical for sustainable agriculture. By tailoring fertilizer selection, timing, and methods to crop types, soil conditions, and environmental factors, while controlling dosage and ensuring proper storage, farmers can maximize nitrogen benefits, enhance productivity, and promote ecological balance.