1、Optimized NPK fertilizer recommendations based on topsoil available
Based on on-farm surveys of 504 farmers and 60 field experimental sites in the drylands of China, we proposed a recommended fertilization method to determine nitrogen (N), phosphorus (P), and potassium (K) fertilizer input rates for wheat production, and then validated the method by a field experiment at 66 different sites in northern China.
2、Optimizing Nitrogen and Phosphorus Fertilizer Application for Wheat
The optimal fertilization strategy for wheat production on alkali soils was found to be 180 kg/ha of nitrogen and 80 kg/ha of phosphorus. These findings provide a theoretical foundation for optimizing fertilizer management in wheat cultivation on alkali soils.
3、Optimized Application of Nitrogen, Phosphorus, and Potassium
The study investigated the effects of N, P and K fertilizer application on the yield, quality, growth, nutrient utilization, and absorption dynamics of winter wheat under straw-returning conditions, aiming to provide a theoretical basis and technical support for efficient winter wheat fertilization.
4、中国小麦区域氮磷钾肥推荐用量及肥料配方研究
在总结分析了2005-2010年在中国小麦主产区进行的各1 575、4 232和3 924组的氮、磷和钾肥肥效试验，并在参考有关文献资料的基础上，将中国小麦主产区分为7个施肥亚区，并对这些区域的氮磷钾肥优化用量及肥料配方进行研究。
Optimizing rates and application time of potassium fertilizer for
Optimizing rates and application time of potassium fertilizer for improving growth, grain nutrients content and yield of wheat crop https://doi.org/10.1515/opag-2019-0049 received November 25, 2018; accepted May 6, 2019
Best Fertilizer for Wheat: Top Choices for High Yields
Choosing the right fertilizer for your wheat is key for high yields and growth. The best fertilizer depends on soil type, expected yield, and wheat stage. Using nitrogen (N), phosphorus (P), and potassium (K) is vital for your wheat’s success. Soil testing helps find your wheat’s nutrient needs.
Optimizing rates and application time of potassium fertilizer for
The findings of the study revealed that potassium levels and their application times substantially influenced yield and yield components of wheat.
How Much Potassium Fertilizer is Needed for Wheat Cultivation
This article discusses wheat’s potassium requirements in detail, including the importance of soil testing, types and application methods of potassium fertilizers, and strategies for adjusting fertilization based on specific conditions.
Response of Wheat Yield and Grain Nitrogen, Phosphorus and Potassium
Compared with the farmers’ fertilizer application rate (FF), the recommended K fertilizer rate (RF) by the test-integrated fertilizer application was decreased at the soil available K level of 150-180 mg·kg -1, and increased at the other levels.
Identifying the critical potassium inputs for optimum yield, potassium
Potassium (K) is a primary limiting macronutrient for plant growth. Inappropriate K application decisions can lead to reduced yield and potassium use efficiency (KUE). Given the scarcity and non-renewable nature of K resources, developing an indicator for critical K input is essential.
Potassium fertilizers play a critical role in enhancing wheat yield and improving grain quality. Potassium significantly impacts plant growth, photosynthesis, stress resistance, and grain characteristics. Among the various potassium fertilizer options, selecting the most suitable one requires综合考虑soil conditions, crop requirements, and cost-effectiveness. Below is an overview of common potassium fertilizer types, their characteristics, and guidance on choosing the right one under different scenarios.
1. Potassium Sulfate (Sulphate of Potassium)
Characteristics: A widely used potassium source containing ~46% potassium. Highly water-soluble, enabling rapid crop absorption. Application: Available as powder or granular forms for basal application, topdressing, or foliar spraying. Advantages: Cost-effective and readily available, suitable for large-scale agriculture. Disadvantages: Excessive use may elevate soil osmotic pressure, hindering crop growth.
2. Potassium Chloride (Chloride of Potassium)
Characteristics: Contains higher chloride ions than sulfate-based options. Suitable for soils or crops requiring chloride management. Application: Similar to potassium sulfate—used as basal fertilizer, topdressing, or foliar spray. Advantages: Tailored to specific crops or soils with chloride sensitivity. Disadvantages: Higher cost and limited suitability for chloride-sensitive soils.
3. Potassium Nitrate (Nitro-Potassium)
Characteristics: Provides both nitrogen (~13%) and potassium (~45%), offering dual nutrition. Application: Used alone as basal/topdressing fertilizer or combined with nitrogen sources. Advantages: Boosts crop growth, enhances nitrogen use efficiency, and strengthens disease resistance. Disadvantages: Higher cost; less ideal for crops with high potassium demands.
4. Potassium Phosphate (Phosphate of Potassium)
Characteristics: Combines phosphorus (~28%) and potassium (~28%), providing balanced nutrition. Application: Applied as basal/topdressing fertilizer or paired with nitrogen-rich formulas. Advantages: Improves phosphorus uptake and utilization efficiency. Disadvantages: Expensive and not universally suited to all soil types.
5. Organic Fertilizers
Characteristics: Derived from animal manure, crop residues, etc., enriched with nitrogen, phosphorus, potassium, and micronutrients. Application: Incorporated into soil via deep tillage or field spreading. Advantages: Enhances soil structure, microbial diversity, and nutrient availability. Disadvantages: Slow-acting; excessive use may cause soil salinization.
6. Balanced Compound Fertilizers
Characteristics: Formulated blends of N-P-K and other nutrients tailored to crop needs. Application: Customized based on soil tests and crop stages. Advantages: Precision fertilization minimizes waste and maximizes nutrient efficiency. Disadvantages: Higher costs and require expertise for proper use.
Key Considerations
- Soil Testing: Analyze soil potassium levels to avoid overapplication.
- Ion Interactions: Be cautious of chloride buildup when mixing fertilizers like sulfate and chloride variants.
- Crop Stages & Climate: Align fertilizer type and timing with growth phases and weather conditions.
- Local Guidelines: Adhere to regional regulations to ensure safe and effective use.
No single potassium fertilizer is universally optimal. The best choice depends on soil properties, crop demands, and economic constraints. By evaluating these factors, farmers can select the most efficient and sustainable option for wheat production.
