1、Estimating on

We conducted 836 on-farm experiments at 209 sites in China to quantify wheat (Triticum aestivum L.) grain yield response to potassium application rates, and evaluate potassium uptake requirements with increasing grain yield.

2、Comparison of soil analytical methods for estimating wheat potassium fertilizer requirements in response to contrasting plant K demand in the glasshouse

A glasshouse trial was designed to investigate the effects of differing plant demand and root density on K uptake by wheat, established by growing plants in two contrasting soil volumes with ...

3、Optimum potassium fertilization level for growth, yield and nutrient uptake of wheat

Thus, this study was designed to investigate the optimum level of potassium fertilizer for growth, yield and nutrient uptake of wheat in the Vertisols of northern Ethiopia.

4、Potassium for Sustainable Agriculture

Siddique et al. (1997) reported that a K fertilizer dose of 110 kg ha −1 was optimum for wheat yield. Potassium fertilization of 40 kg ha −1 can increase 21–35 % of paddy and wheat yield (Hussain and Yasin 2003).

5、Yield response of wheat to nitrogen and potassium fertilization

Keeping in view the importance of N and K fertilizer application for improved wheat yield and quality, this experiment was initiated to study the response of qualitative and quantitative parameters of wheat to different N and K levels in an alkaline calcareous soil.

Requirement of nitrogen, phosphorus and potassium fertilizers for wheat cultivation under irrigation by municipal wastewater

The nitrogen, phosphorus and potassium doses of 100, 20 and 60 kg ha−1, respectively were optimum for the maximum yield of wheat under irrigation by mu-nicipal wastewater.

Effects of potassium fertilization on winter wheat under different production practices in the North China Plain

Our specific objectives in this study were to determine winter wheat (Triticum aestivum L.) response to K fertilization on Haplic Luvisols in the North China Plain (NCP) as affected by conventional as well as high-yielding production practices. Four field experiments were conducted in the NCP.

Potassium Effects on Wheat Yield and Quality in Long

Under these conditions, wheat yield and quality are maximized by balanced fertilization with optimum potassium management; different levels of potassium produced significant variation in wheat yield, protein and gluten content; the best performance was achieved with 80 kgK/ha.

Growth, photosynthesis, and nutrient uptake in wheat are affected by differences in nitrogen levels and forms and potassium supply

Our study shows a clear positive interaction between K and N, suggesting that high K supply relieves ammonium stress while improving growth vigor under nitrate nutrition by enhancing nutrient...

Potassium in agriculture – Status and perspectives

In this review we summarize factors determining the plant availability of soil potassium (K), the role of K in crop yield formation and product quality, and the dependence of crop stress resistance on K nutrition. Average soil reserves of K are generally large, but most of it is not plant-available.

Wheat, as one of the world's most important food crops, has a significant demand for potassium fertilizer during its growth. Potassium not only promotes root development, enhances disease resistance, but also improves yield and quality. Rational application of potassium fertilizer is crucial for boosting wheat productivity and quality. This article provides detailed guidelines on the appropriate concentration of potassium fertilizer for wheat, aiming to serve as a reference for agricultural production.

1. Types and Characteristics of Potassium Fertilizers

Potassium fertilizers are essential chemical compounds used to supplement plants' potassium needs. They are categorized into inorganic and organic types. Inorganic potassium fertilizers include potassium chloride (KCl), potassium sulfate (K₂SO₄), and potassium nitrate (KNO₃), while organic options include urea and potassium dihydrogen phosphate (KH₂PO₄). Different types vary in properties such as solubility, hygroscopicity, and stability.

2. Concentration Requirements for Wheat

The potassium demand of wheat varies based on cultivar, soil type, and climatic conditions. Generally, potassium requirements increase progressively from the early growth stages to maturity. The concentration of potassium fertilizer should align with these phases:

(1) Seedling Stage

During this critical root-development phase, potassium demands are low. To avoid "fertilizer burn," use a diluted solution (e.g., 0.5–1% potassium chloride) for foliar spraying.

(2) Jointing to Heading Stage

This is a key growth period with rising potassium needs. Increase the concentration to 1–3% potassium chloride, applied via foliar spraying or soil drenching.

(3) Maturity Stage

Maintain stable potassium levels to prevent excess loss. A 1–2% potassium chloride solution is recommended for foliar spraying or soil application.

3. Application Methods and Precautions

(1) Foliar Spraying

Directly spraying potassium solutions onto leaves allows rapid absorption. this method is weather-dependent (avoid wind or rain) and may lead to nutrient loss. Choose calm, rain-free conditions and minimize spray duration.

(2) Soil Drench

Applying potassium directly to the soil improves efficiency and reduces environmental impact. Ensure proper timing and depth to avoid root damage. Mix with other fertilizers cautiously to prevent adverse reactions.

4. Timing and Strategies for Application

(1) Topdressing

Supplement potassium during growth stages based on needs. For example, use foliar sprays at the seedling stage and soil drenches during jointing-heading.

(2) Base Fertilization

Apply potassium as a basal fertilizer before planting to sustain long-term needs. Calibrate dosage carefully to avoid disrupting soil structure or hindering growth.

5. Practical Tips for Use

• Dilute Properly: Dissolve fertilizers fully in water before application to prevent burn.
• Avoid Overapplication: Excess potassium can harm crops. Follow recommended concentrations strictly.

6. Effects and Benefits of Potassium Fertilizer

• Yield Improvement: Enhances root growth, disease resistance, grain protein, and starch content.
• Quality Enhancement: Boosts photosynthesis, regulates water balance, and increases drought/flood tolerance.
• Disease Suppression: Strengthens cell walls and membranes, reducing infection risks.

Rational potassium management is vital for wheat productivity and quality. Tailoring concentration, application methods, and timing to specific growth stages maximizes benefits while minimizing environmental impact. Scientific fertilization practices contribute to food security and sustainable agriculture.