1、Maximising cotton phosphorus utilisation for zero surplus and high

Can optimization of phosphorus input lead to high productivity and high phosphorus use efficiency of cotton through maximization of root/mycorrhizal efficiency in phosphorus acquisition?

2、Predicting and Optimizing Cotton Yield and Nitrogen

Hence, how to rationally optimize cotton fertilization management, and to achieve the reduction of fertilizer input and the increase of benefits in cotton production, is a key problem that this paper intends to solve.

3、Influence of Long

These findings demonstrate that long-term balanced NPK fertilization optimizes soil C-N-P stoichiometric balance by enhancing SOC sequestration and phosphorus retention, regulating cotton organ-specific stoichiometric homeostasis, and promoting efficient nutrient uptake and assimilate translocation.

4、Predicting and Optimizing Cotton Yield and Nitrogen

Hence, how to rationally optimize cotton fertilization management, and to achieve the reduction of fertilizer input and the increase of benefits in cotton production, is a key problem that this paper intends to solve.

Rhizosphere management technology at the core of starter phosphorus

We established a rhizosphere management technology to reduce the P fertilizer input and maintain the high yield of cotton at the same time.

Integrated deep banding and fertigation of phosphorus improves cotton

Applying 50 % of the P fertilizer as a band at a 15 cm depth before planting drip-irrigated cotton is optimal. This practice enhances soil P availability, stimulates root growth and distribution, and ultimately improves P utilization and cotton yield.

Optimizing Phosphatic Fertilizer Drip Timing to Improve Cotton

To improve cotton yield in salinized arid fields, excess salt is removed and phosphorus content is increased. Adjusting phosphate fertilizer timing with water and fertilizer reduces phosphorus binding with calcium ions.

Phosphorus uptake mechanisms associated with phosphorus application

This study helps provide theoretical and technical support for improving cotton phosphorus efficiency, guiding scientific fertilization, breeding new cotton varieties with high phosphorus efficiency, and improving cotton production and planting resources.

Predicting and Optimizing Cotton Yield and Nitrogen

Applying ecological stoichiometry theory can effectively guide fertilization strategies. Rational optimization of nutrient ratios in nitrogen-limited areas not only improves environmental sustainability but also enhances agricultural productivity through balanced element management.

Drip Irrigation of Phosphorus Fertilizer Enhances Cotton Yield and

Considering both cotton yield and P use efficiency, drip-applied phosphorus fertilizer is the optimal fertilization strategy in Northwest China, effectively increasing cotton yield, which is of great significance for guiding rational fertilization.

In agricultural production, the rational application of phosphorus fertilizers plays a critical role in improving crop yields and quality. excessive use of phosphorus fertilizers not only leads to resource waste but also poses environmental pollution risks. understanding how to manage cases of excessive phosphorus fertilization in cotton is particularly important. This article discusses in detail the measures to address excessive phosphorus fertilization in cotton:

I. Soil Testing and Evaluation

1. Soil Sampling

• Sampling Time: Conduct sampling during non-critical periods of the crop growth cycle to minimize disruption to crop development.
• Sampling Method: Use multi-point composite sampling to ensure the sample represents the entire sampling site.
• Sample Handling: Transport soil samples to a laboratory and process and store them following standard protocols.

2. Soil Analysis

• Testing Parameters: Focus on total phosphorus content, available phosphorus, organic matter, and other key indicators.
• Testing Methods: Employ national standard methods, such as colorimetry or atomic absorption spectroscopy.
• Data Interpretation: Evaluate soil phosphorus status based on test results to guide future fertilization.

3. Phosphorus Balance Analysis

• Balance Calculation: Compare phosphorus levels before and after fertilization to determine surplus or deficit.
• Cause Analysis: Investigate reasons for imbalances, such as overapplication or improper fertilization practices.

II. Adjusting Fertilization Strategies

1. Reducing Phosphorus Fertilizer Use

• Reduction Rate: Decrease phosphorus fertilizer dosage in subsequent seasons or cycles based on soil test results.
• Gradual Reduction: Avoid abrupt cuts to prevent crop stress; implement incremental reductions instead.

2. Enhancing Organic Fertilizers

• Organic Sources: Select phosphorus-rich organic materials, such as animal manure or bone meal.
• Application Method: Integrate with balanced nutrient management, timing, and dosage optimization.

3. Crop System Optimization

• Crop Selection: Choose phosphorus-efficient or low-phosphorus-tolerant crops.
• Cropping Patterns: Adopt rotational or intercropping systems to improve nutrient use efficiency.

III. Precision Fertilization Implementation

1. Soil-Test-Based Formulations

• Formula Design: Tailor fertilization recipes to soil tests, crop needs, and fertilizer properties.
• Precision Tools: Utilize technologies like drone fertilization or smart applicators for efficient implementation.

2. Dynamic Monitoring and Adjustment

• Monitoring Frequency: Conduct regular soil nutrient assessments aligned with crop stages.
• Responsive Actions: Refine fertilization plans promptly based on monitoring data to safeguard crop health.

3. Agricultural Extension and Training

• Knowledge Dissemination: Educate farmers on scientific fertilization practices and hazards of excess phosphorus.
• Training Programs: Organize workshops and seminars with experts to demonstrate best practices.

IV. Environmental Remediation and Ecosystem Recovery

1. Soil Pollution Mitigation

• Contamination Sources: Investigate causes of phosphorus accumulation, such as runoff or sewage irrigation.
• Remediation Techniques: Apply physical, chemical, or bioremediation methods (e.g., soil washing, flocculation, phytoremediation).

2. Groundwater Protection

• Monitoring Targets: Track phosphorus levels in groundwater.
• Protective Measures: Restrict high-phosphorus fertilizers near water sources and enforce protective zones.

3. Ecological Restoration

• Vegetation Recovery: Plant phosphorus-efficient or nitrogen-fixing species to improve soil structure.
• Ecosystem Balance: Leverage vegetation to enhance natural regulation and reduce phosphorus loss.

addressing excessive phosphorus fertilization in cotton requires a systematic approach, including soil testing, strategy adjustment, precision fertilization, and environmental remediation. By adopting scientific methods and technologies, this issue can be effectively resolved, promoting sustainable agricultural development.