1、Towards optimal use of phosphorus fertiliser

Here, we use meta-analysis to synthesize yield responses to P fertilisation in grasslands, the most common type of agricultural land, to identify under which conditions P fertilisation is...

2、Phosphorus: Its Efficient Use in Agriculture

P-use efficiency in agriculture is related to soils reaching and being maintained at a critical level of readily plant-available P, and factors affecting the critical level are discussed. Efficiency can be assessed by the direct, difference, and balance methods.

3、The agronomic and environmental assessment of soil phosphorus levels

To address this issue, we conducted a meta-analysis with 584 data observations from 175 studies in 326 locations to assess the critical soil P thresholds as related to crop type and soil properties.

4、Agronomic threshold of soil available phosphorus and the appropriate

Six phosphorus (P 2 O 5) application levels of P0 (kg/hm 2), P50 (50 kg/hm 2), P75 (75 kg/hm 2), P100 (100 kg/hm 2), P150 (150 kg/hm 2) and P300 (300 kg/hm 2) were set up.

5、Mechanisms for improving phosphorus utilization efficiency in plants

Relatively large amounts of P fertilizer are applied to sustain crop growth and development and to achieve high yields. However, with increasing P application, plant P efficiency generally declines, which results in greater losses of P to the environment with detrimental consequences for ecosystems.

Effects of Phosphorus Application Levels on Its Uptake and Utilization

Our findings provide a theoretical basis for phosphorus fertilizer utilization in foxtail millet cultivation and will help determine the optimal fertilization levels for foxtail millet growth.

A dynamic optimization of soil phosphorus status approach

Here, we propose a dynamic optimization of soil P status (DOP) approach aimed at managing long-term soil P status within the range of agronomic and environmental soil P thresholds,...

Phosphorus use efficiency in agricultural systems: A comprehensive

This study indicates that there is a high potential for improving PUE in the agricultural production system of Asian countries particularly through diverting manure-bound P from non-agricultural land or unproductive use to agricultural lands.

Management Strategies to Optimize Soil Phosphorus Utilization and

Core Ideas The low P use efficiency of crop leads to >90 kg P ha ⁻¹ accumulation in soil each year. Soil P loss is the second dominant contributor of Chinese waterbodies eutrophication....

Improving the efficiency of soil and fertilizer phosphorus use in

Improving the efficiency of soil and fertilizer phosphorus use in agriculture resource base and to maintain and increase, where necessary, agricultural productivity. This report has indicated that the efficiency of P fertilizer use in a range of agricultural systems is often much higher than thought previously, depend

The phosphorus fertilizer utilization rate in agricultural soils refers to the proportion of phosphorus applied through fertilizers that is absorbed and utilized by crops relative to the total amount applied. This indicator is critical for evaluating fertilizer effectiveness and guiding agricultural practices. Below is a detailed analysis of the appropriate phosphorus fertilizer utilization rate:

I. Importance of Soil Phosphorus Fertilizer Utilization Rate

1. Ensuring Crop Nutritional Needs: The utilization rate directly reflects how efficiently phosphorus is absorbed by crops. Higher rates ensure adequate phosphorus supply for healthy crop growth.

2. Improving Fertilizer Efficiency: Optimal utilization minimizes waste, enhances economic returns, and reduces environmental risks associated with excessive fertilizer use.

3. Guiding Agricultural Practices: Understanding this rate helps farmers and agronomists design precise fertilization plans, select appropriate fertilizer types, and apply optimal dosages.

II. Standards for Appropriate Phosphorus Fertilizer Utilization Rates

1. International Guidelines: The Food and Agriculture Organization (FAO) and World Health Organization (WHO) recommend a global standard of 30% to 40%. This balances crop nutrient needs with environmental protection.

2. National Standards in China: China’s agricultural standards require a minimum utilization rate of 25%, reflecting local agricultural realities and eco-friendly development goals.

3. Crop and Soil Type Variations:

   • Crop-Specific Needs: Different crops (e.g., grains vs. vegetables) have varying phosphorus requirements.
   • Soil Type Impact: Soils like sandy or loamy textures affect phosphorus availability, necessitating tailored fertilization strategies.

III. Strategies to Improve Phosphorus Fertilizer Utilization

1. Selecting Suitable Fertilizers:

   • Use phosphate-based fertilizers for staple crops (e.g., rice, wheat).
   • Opt for calcium-magnesium-potassium compound fertilizers for cash crops (e.g., vegetables, fruits).

2. Optimized Timing and Methods:

   • Apply phosphorus-rich base fertilizers during early stages and supplement with topdressing as needed.
   • Enhance efficiency through deep tillage, mulching, or controlled-release formulations.

3. Field Management Adjustments:

   • Reduce nutrient competition by removing weeds and debris.
   • Prevent phosphorus runoff through effective drainage management.

4. Scientific Monitoring and Calibration:

   • Regularly test soil phosphorus levels to assess utilization rates.
   • Refine fertilization plans based on monitoring data to avoid overapplication.

The phosphorus fertilizer utilization rate is a key metric for evaluating fertilizer performance and sustainable farming. Achieving optimal rates requires aligning with international and national standards while accounting for crop-specific needs and soil conditions. By adopting strategies such as targeted fertilizer selection, refined application methods, proactive field management, and data-driven adjustments, farmers can maximize phosphorus efficiency, reduce environmental impact, and boost agricultural productivity.

Key Terms: Phosphorus fertilizer utilization rate, FAO, soil phosphorus content, precision agriculture, sustainable farming.