1、Towards precise nitrogen fertilizer management for sustainable

Recognizing the dual role of N fertilizers—both beneficial and detrimental—various management strategies have been proposed to improve fertilizer efficiency.

2、Agricultural management practices in China enhance nitrogen

Drawing on an extensive database in China, this study estimates the costs and benefits of combining organic and chemical fertilizers, straw recycling and deep placement of fertilizer.

3、Optimizing nitrogen fertilizer application protocol to minimize the

Optimizing the N application protocol (N 54-72-54) reduced ammonia (NH 3) volatilization by 18.6% and runoff N losses by 13.1%.

4、Enhancing nitrogen use efficiency in agriculture by integrating

Integrated nitrogen management strategies including split fertilizer application, controlled-release products, precision agriculture, and genetic improvements can significantly reduce nitrogen losses from agricultural systems.

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

Governments and researchers in various countries have implemented measures from three perspectives, namely ‘source control, process management, and terminal treatment,’ in order to mitigate agricultural nitrogen pollution.

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.

Real

Real-time nitrogen monitoring optimizes fertilizer application, reducing these environmental impacts by aligning nitrogen use with crop needs, thereby enhancing nitrogen use efficiency and promoting sustainable agricultural practices.

Sustainable Nitrogen Management with PHAs: Innovations in Fertilizer

Abstract Nitrogen use efficiency (NUE) is a key metric for nitrogen management for assessing how effectively crops utilize nitrogen fertilizers. It is generally very low, around 25–50% causing excessive reactive nitrogen in the environment. However, the disparity between fertilizer application and plant absorption can lead to environmental issues, including water pollution, soil degradation ...

Guidelines on Nitrogen Management in Agricultural Systems

Within each of these latter three chapters, the theoretical basis and applications of stable isotope 15N tracer techniques to measure N process rates and N balance from different N sources in various cropping systems are elaborated. The publication is completed with a brief conclusion.

Effects of Nitrogen Application Strategies on Yield, Nitrogen Uptake

In this study, a field plot trial with five N fertilization application strategies was conducted in the maize field from 2021 to 2022 in the Ningxia Yellow Irrigation District, Northwest China.

Nitrogen fertilizer application refers to the agricultural practice of adding nitrogen-containing compounds (such as urea, ammonium nitrate, and ammonium chloride) to the soil through irrigation or fertilization methods to promote plant growth. Nitrogen is one of the essential macronutrients for plant development, playing a critical role in chlorophyll synthesis, protein production, and photosynthesis. Rational use of nitrogen fertilizers is therefore vital for improving crop yield and quality. The following management measures should be implemented:

1. Select Appropriate Nitrogen Fertilizer Varieties: Choose suitable nitrogen fertilizers based on crop type and growth stage. For example, leguminous crops require fertilizers with higher nitrogen content, while gramineous crops benefit from those with lower nitrogen levels.

2. Determine Reasonable Application Rates: Adjust nitrogen fertilizer dosages according to soil fertility and crop nutrient requirements. Excessive application can lead to excessive plant growth and reduced crop quality, while insufficient application may fail to meet nutritional demands, affecting yields.

3. Adopt Scientific Fertilization Methods: Nitrogen fertilizers can be applied as base fertilizer (incorporated into the soil before planting), topdressing fertilizer (added during crop growth), or foliar spraying (dissolving nitrogen in water and spraying it onto leaves) to enhance absorption efficiency.

4. Coordinate Nitrogen with Phosphorus and Potassium: Balance the proportions of nitrogen, phosphorus, and potassium to improve nutrient utilization rates and ensure comprehensive, balanced crop growth.

5. Prevent Nitrogen Loss and Pollution: Control application amounts and methods to avoid environmental contamination. For instance, excessive nitrogen can cause groundwater pollution via surface runoff or leaching, or contribute to eutrophication in water bodies through rainwater runoff.

6. Employ Slow-Release and Controlled-Release Technologies: Use technologies that extend nitrogen release periods to reduce losses. Examples include compound fertilizers containing organic matter or humic acid, which slow nitrogen release and boost efficiency.

7. Enhance Soil Management: Improve soil structure and fertility to optimize nitrogen uptake. Practices like adding organic fertilizers or straw returning increase microbial activity, organic matter content, and soil nitrogen adsorption capacity.

8. Monitor Soil and Crop Conditions: Regularly test soil and crop nitrogen levels, pH, and other indicators to adjust fertilization plans. Observe crop growth and yield performance to evaluate nitrogen application effects.

9. Promote Scientific Fertilization Practices: Disseminate knowledge on rational fertilization to guide farmers in avoiding blind or excessive application.

effective nitrogen fertilizer management involves selecting appropriate varieties, optimizing application rates and methods, coordinating nutrient balance, preventing pollution, utilizing advanced technologies, improving soil health, monitoring conditions, and promoting scientific practices. These measures improve nitrogen use efficiency, enhance crop productivity, and support sustainable agricultural development.