1、Optimal timing and rate of nitrogen fertilizer use: An integrated

We use this framework to estimate nitrogen fertilizer application inefficiency and to determine the optimal rate and timing of fertilizer application. We apply this framework to wheat production at the field scale, using an agronomic simulation model calibrated to experimental data from Australia.

2、Towards precise nitrogen fertilizer management for sustainable

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.

3、Analysis of Optimal Source and Application Timing of Nitrogen

In sandy loam and silty clay soils, the grain yield increased when using the T3 application timing compared to the silty clay loam soil. Notably, the silty clay loam soil with the T2...

4、Optimal Timing for Fertilizer Application in Agriculture

Adjusting fertilizer timing according to seasonal growth patterns is vital. For example, applying nitrogen-rich fertilizers during early spring supports plant vigor while potassium fertilizers in late summer prepare plants for winter hardiness.

When Is the Best Time to Apply Nitrogen Fertilizer?

Achieve optimal plant health. Learn how to time nitrogen fertilizer based on seasonal schedules, soil, and growth phases.

Assessing fertilizer nitrogen sources and application timing for water

We tested 19 different fertilizer N management treatments with different sources and timings. The best option was applying aqua-ammonia or urea preplant to a dry soil.

Optimal Nitrogen Fertilizer Application Frequency For Healthy Plant

Seasonal Timing Tips Nitrogen fertilizer application timing hinges on plant growth cycles and seasonal conditions. Spring emerges as a critical window for most lawns and crops, as soil temperatures rise above 50°F (10°C), triggering root activity and leaf development. Applying 1-2 pounds of nitrogen per 1,000 square feet during this period fuels vigorous growth without promoting excessive ...

Establishing optimal one

The optimal fertilizer placement interval was 15 cm for ORN, and increasing or decreasing the fertilizer placement interval from 15 cm significantly reduced wheat yield.

Crop responses to application of optimum nitrogen fertilizers on soils

We examined crop responses to various N supplies in soils of differing fertility formed from a long-term trial. High target yields were achieved when N fertilizer was resupplied to long-term nil N soils. Short-term ceasing of N supply did not reduce yield under the long-term excessive N application soils.

Analysis of Optimal Source and Application Timing of Nitrogen

The use of nitrogen (N) fertilizers can have detrimental effects on the environment due to nitrate leaching. This study aims to examine the impact of N fertilizer source and application timing on wheat yield and nitrate leaching in various soil textures. A randomized complete block design (RCBD) was employed to conduct the experiment.

Single-element nitrogen fertilizers are a critical type of chemical fertilizer, primarily providing plants with essential nitrogen. Nitrogen is one of the indispensable elements for plant growth, promoting the development of stems, leaves, and fruits while enhancing crop yield and quality. the rational application of single-element nitrogen fertilizers holds significant importance in agricultural production.

When applying single-element nitrogen fertilizers, several factors must be considered:

1. Soil Type: Different soils have varying nitrogen requirements and absorption capacities. Generally, sandy and loamy soils, which retain water and nutrients well, are suitable for slow-release or controlled-release nitrogen fertilizers. In contrast, clayey and saline-alkaline soils benefit from fast-release nitrogen fertilizers. Additionally, soil pH affects nitrogen efficacy: acidic soils prefer ammonium-based fertilizers, while alkaline soils favor nitrate-based ones.

2. Crop Type: Nitrogen demands vary across crops. Grains (e.g., wheat, corn) typically require higher nitrogen levels and should be prioritized. Legumes (e.g., soybeans, peanuts) need moderate supplementation, while vegetables, fruit trees, and other crops should be fertilized based on specific needs.

3. Climate Conditions: Climate significantly impacts nitrogen efficiency. In arid or semi-arid regions, limited soil moisture may lead to nitrogen leaching, making slow- or controlled-release fertilizers preferable. In humid areas, fast-release fertilizers are more suitable. Temperature and sunlight also influence nitrogen absorption and transformation, requiring adjusted strategies.

4. Fertilization Timing: Timing directly affects nitrogen utilization and crop growth. Base fertilizers should be applied before planting to ensure adequate nutrient reserves, while topdressing should align with crop growth stages and soil conditions. Early spring crops may need frequent, heavy topdressing to meet nitrogen demands, whereas post-harvest autumn crops require reduced applications to avoid waste.

5. Application Methods: Methods impact nitrogen absorption. Common practices include broadcasting, furrow application, and hole application. Broadcasting suits large fields but risks nitrogen loss, while furrow and hole applications reduce loss and improve efficiency. Avoid mixing with alkaline substances to prevent nitrogen deactivation.

6. Fertilization Rate: Excessive application leads to soil salinization and degradation, harming ecosystems, while insufficient amounts stress crops. Adhere to the "appropriate amount principle," tailoring rates to soil fertility, crop type, and climate.

7. Timing of Application: Early nitrogen application promotes rapid crop establishment and higher yields, while later applications extend growth periods and stress resistance. Adjust timing based on local climate and soil conditions.

8. Application Techniques: Techniques like banding (条施), ring application (环施), and spot application (点施) enhance efficiency. Banding reduces loss in row crops, while ring and spot applications boost absorption. Avoid applying against root growth directions to prevent uptake issues.

rational use of single-element nitrogen fertilizers is vital for sustainable agriculture. A scientific fertilization plan, integrating soil type, crop needs, climate, timing, methods, rates, and techniques, optimizes yield, quality, and resource efficiency.