1、Effects of the Foliar Application of Potassium Fertilizer on the Grain

In the late growth stage of wheat, potassium deficiency occurs even under sufficient nitrogen/phosphorus (N/P) levels, so it is necessary to supplement potassium through foliar spraying.

2、Effects of foliar spraying of potassium fertilizer on the contents of

Potassium (K) has a considerable effect on wheat quality, and prudent application of K fertilizer can significantly improve wheat yield and quality.

3、Effects of the Foliar Application of Potassium

These results indicated that the effect of KFA on wheat grain quality in the later growth period can have effects similar to those of soil potassium application, which may be related to the characteristics of the potassium demand and protein accumulation of wheat.

4、Effects of Foliar Fertilization: a Review of Current Status and Future

Foliar fertilizer application after soil fertilization is an effective method to increase the contents of trace elements in crops and crop yield, and to improve the soil environment. However, the application of inorganic foliar fertilizer results in difficulties in nutrient absorption and migration in plants.

Frontiers

The judicious application of potassium (K) fertilizer plays a critical role in increasing potassium use efficiency, leaf photosynthesis capacity, and winter wheat yield. However, there is no unified conclusion on the yield-increasing effect of split K fertilizer application.

The effect of foliar application of different potassium fertilizers on

According to the research findings, potassium nitrate fertilizer had a significant impact on growth parameters in both years. The applications of potassium thiosulfate and potassium phosphite had comparable effects on growth and development.

Key Importance of Foliar Application of Potassium Nitrate on Growth and

In this study, the effects of foliar potassium nitrate (KNO3) application on the stress tolerance and recovery of Myrobalan 29C rootstocks (Prunus cerasifera Ehrh.) were evaluated.

(PDF) Foliar application of potassium and restricted irrigation

Foliar K application, F1: Control (Water spray), F2: 2% K foliar application at tillering (40-45) and jointing (60-65 DAS), and K3: 4% K foliar application at tillering (40-45) and jointing.

Potassium in plants: Growth regulation, signaling, and environmental

Foliar potassium-induced regulations in glycine betaine and malondialdehyde were associated with grain yield of heat-stressed bread wheat (Triticum aestivum L.)

Foliar fertilization for nutrient use efficiency

In wheat, foliar application of nano-fertilizers, particularly Nano Chelated Super Fertilizer (NCSF), alone or in combination with potassium and amino acids, produced significant improvements in biological yield, grain yield, harvest index, and agronomic efficiency compared to control plots.

Foliar application of potassium fertilizer can effectively regulate excessive growth in wheat, enhancing yield and quality. Potassium, an essential nutrient for plant growth, plays a critical role in wheat development, physiological processes, and stress resistance.

1. The Role of Potassium Fertilizer

Potassium is a key cation in plants, involved in various metabolic processes such as photosynthesis, respiration, and osmotic regulation. It improves stress resistance, strengthening tolerance to cold, drought, and diseases. Additionally, potassium promotes root system development, increasing root density and efficiency in absorbing water and nutrients from the soil. It also boosts photosynthetic efficiency, leading to higher yields and improved crop quality.

2. Causes of Excessive Growth in Wheat

Excessive growth in wheat occurs when plants grow excessively tall, with thick stems, large leaves, and vigorous tillering due to over-nutrition or unfavorable environmental conditions. This phenomenon reduces yield, lowers grain quality, and increases susceptibility to pests and diseases. Managing excessive growth is crucial for optimizing wheat production.

3. Methods for Controlling Excessive Growth with Potassium Fertilizer

(1) Timing of Application

The optimal period for foliar potassium application is during the jointing to heading stages, when wheat has high potassium demand. Applying potassium during this window ensures rapid absorption and maximum effectiveness.

(2) Concentration

Adjust the concentration based on growth stage and soil fertility. For excessive growth control, use 0.5%–1% potassium solution. Excessive concentrations may damage roots and hinder normal growth.

(3) Application Technique

• Apply on sunny days to avoid rainwash.
• Ensure thorough coverage of stems and leaves for efficient absorption.
• Maintain proper spray distance to prevent leaf burn.

(4) Combined Fertilization

Pair potassium with nitrogen, phosphorus, or other nutrients to balance nutritional needs and amplify effects.

4. Precautions for Using Potassium Fertilizer

• Avoid overapplication: Excess potassium may cause lush, weak stalks, reducing yield and quality.
• Do not mix with nitrogen fertilizers: Excess nitrogen worsens excessive growth.
• Avoid alkaline mixtures: Alkaline fertilizers reduce potassium availability.

Foliar potassium application effectively mitigates excessive growth in wheat while improving yield and quality. Farmers should carefully time applications, adjust concentrations, and combine with other nutrients for optimal results.