1、Optimization of water and fertilizer management improves yield, water

The reasons for this result may be due to the fact that the ratio of nitrogen, phosphorus and potassium in this experiment was 1:0.175:0.166, where the amount of phosphorus applied was sufficient and the potassium content in the soil was very high (>150 mg kg −1).

2、Phosphorus and Potassium Fertilization of Disk

Research evaluating P fertilization has been limited to conventional-tillage systems, with little research conducted on conservation-tillage systems. This research was conducted to evaluate P and K fertilization of cotton using two tillage systems.

3、Minimum fertilization at the appearance of the first flower benefits

Therefore, the objective of this paper was to explain the optimal application time for once fertilization based on cotton nutrient accumulation of nitrogen, phosphorus and potassium to...

4、Drip Irrigation of Phosphorus Fertilizer Enhances Cotton Yield and

This treatment consistently increased cotton yield by 30.41–39.09% (p < 0.05) compared to CK, demonstrating stable positive effects. This study highlights that adjusting P application methods can establish sustainable, high-yield agricultural fertilization systems.

Research Progress on Fertilization Technology and

We also outlined research progress on the high-efficiency utilization mechanisms of nitrogen, phosphorus and potassium for cotton, and put forward research directions of techniques of fertilization and nutrition mechanism for cotton in the future.

Minimum fertilization at the appearance of the first flower

Therefore, the objective of this paper was to explain the optimal application time for once fertilization based on cotton nutrient accumulation of nitrogen, phosphorus and potassium to provide technical support for simplified fertilization management in cotton production.

Optimizing potassium management for enhanced cotton yields in China's

Optimal K fertilizer rates and planting densities for three cotton zones are proposed. Potassium (K) plays a crucial role in the growth and yield of cotton. As the world's leading cotton-producing country, China faces challenges such as soil K depletion and rising costs of K fertilizers.

Phosphorus and Potassium Fertilization of Cotton

The 90 lb K2O/acre fertilization rate response for the two high EK soils (Lexington and Loring) was higher than the K previously recommended for cotton production in Tennessee. Based on this research, recommended rates of potassium fertilization were increases for NT cotton production.

Best Fertilizer for Cotton: Complete Growing Guide

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Optimizing Phosphatic Fertilizer Drip Timing to Improve Cotton

We conducted a field experiment using a completely randomized design to adjust the timing of phosphatic fertilizer application and apply the same amount of pure phosphorus.

Cotton is one of the most important cash crops, and its yield and quality directly impact farmers' income. To enhance cotton production and fiber quality, rational application of phosphorus (P) and potassium (K) fertilizers is critical. Below is a detailed analysis of optimal P and K requirements for cotton:

I. Phosphorus Requirement Analysis for Cotton

1. Cotton’s Phosphorus Needs Phosphorus plays a vital role in root development, flower formation, and overall growth. It improves photosynthetic efficiency, strengthens disease resistance, and boosts both yield and fiber quality.

2. Soil Phosphorus Content Soil P levels significantly affect cotton growth. Deficiencies may lead to stunted growth or yellowing leaves. Pre-plant soil testing is essential to determine whether P supplementation is needed.

3. Fertilization Timing Phosphorus absorption peaks during flowering and early fruiting stages. Applying P fertilizers during these periods promotes flower bud differentiation and fruit development, maximizing their benefits.

II. Potassium Requirement Analysis for Cotton

1. Cotton’s Potassium Needs Potassium is crucial for physiological functions such as regulating cellular osmotic balance and enhancing photosynthesis. It also improves stress resistance, enabling cotton to withstand adverse environmental conditions.

2. Soil Potassium Content Similar to phosphorus, soil K deficiencies can cause growth retardation and leaf discoloration. Soil testing helps determine if K fertilization is necessary.

3. Fertilization Timing Potassium uptake is highest during post-flowering and fruit maturation stages. Applying K fertilizers before harvest supports fruit development and fiber quality improvement.

III. Fertilization Recommendations

1. Soil Testing Conduct soil analyses before planting to assess P and K levels, as well as soil properties, to tailor fertilization plans accurately.

2. Combine Organic and Inorganic Fertilizers Use a balanced approach with organic manures and chemical fertilizers to ensure comprehensive nutrient supply. Avoid over-application to prevent environmental pollution and resource waste.

3. Regular Monitoring Track cotton growth and soil nutrient dynamics regularly to adjust fertilization strategies promptly.

determining the optimal amount of phosphorus and potassium for cotton requires consideration of soil conditions, growth stages, and environmental factors. Scientific fertilization practices and well-designed strategies can significantly improve cotton yield and quality, ultimately increasing agricultural profitability.