1、Optimizing drip fertigation management to simultaneously improve the

The results showed that, compared with the CK and CG treatments, the drip irrigation and fertilization treatment increased grape yield and significantly improved water productivity and fertilizer agronomic use efficiency.

2、Effects of Different Types of Potassium Fertilizers on Nutrient Uptake

Potassium (K) is the most important element for fruit quality improvement. This study aimed at determining the best K fertilizer type that can promote grape growth and nutrient uptake.

3、Insight into how fertilization strategies increase quality of grape

In the present study, high-throughput sequencing associated with correlation analysis was used to explore how microbial communities and grape quality respond to the changes of soil properties derived from rational fertilization strategies in grape growth.

Potassium fertigation and organic fertilisation in ‘Syrah’ grape in

Since soils from that region usually have low organic matter content, we hypothesise that soil application of organic fertiliser and potassium application through drip irrigation enhances the availability of this nutrient in the soil, and it influences grape yield and quality.

Optimization of irrigation and fertilization based on grape yield and

A systematic investigation was implemented to explore the impacts of irrigation and fertilization on grape growth, soil water and fertilizer distribution, greenhouse gas emissions, and yield components.

Insight into how fertilization strategies increase quality of grape

This study investigated the improvement in soil physicochemical properties as well as their relations with microbial community structure and grape quality under diferent fertilization...

Grapes (Tables)

The biostimulation of table grapes begins with the correct fertilization of the soil, with complete fertigation programs with Hakaphos ® and HydroSpeed ® (or NovaTec ® Solub).

Insight into how fertilization strategies increase quality of grape

Our results demonstrated that combined application of organic and bioorganic fertilization showed a great influence on soil physicochemical properties, whose positive changes could further optimize microbial communities and facilitate the promotion of grape quality.

Optimizing drip fertigation management based on yield, quality, water

To optimize drip fertigation scheduling for wine grape in North China, a three-year field experiment was conducted to study the effects of irrigation and fertilization quota on yield, berry quality, water use efficiency (WUE) and partial factor productivity of fertilizer (PFPF).

Effects of Potassium

Overall, potassium-containing fertilizers can promote sugar accumulation and reduce acid accumulation in grape fruits, and potassium sulfate and potassium dihydrogen phosphate had the best effects among the fertilizers tested.

As an important commercial fruit crop, the high-yield and high-quality cultivation of grapes rely heavily on scientific fertilization. Potassium is an essential nutrient element during grape growth, playing a critical role in promoting plant development, enhancing fruit quality, and improving disease resistance. To achieve optimal fertilization effects, potassium application must be tailored to grape growth stages, soil conditions, market demands, and other factors.

1. Understanding Grape’s Potassium Requirements

First, it is crucial to understand grapevines’ need for potassium. Potassium promotes root development, strengthens stress resistance and pest/disease resilience, enhances fruit coloration and sugar accumulation, and improves overall fruit quality. Thus, rational potassium management is vital for achieving high yields, superior quality, and efficiency in grape production.

2. Selecting Appropriate Potassium Fertilizers

When choosing potassium fertilizers, prioritize high-concentration options such as potassium sulfate (K₂SO₄) or potassium chloride (KCl). These fertilizers provide sufficient potassium to meet grapevine demands. Additionally, consider the solubility and absorption efficiency of the fertilizer to ensure effective uptake by plants.

3. Timing of Potassium Application

The timing of potassium application significantly impacts its efficacy. Grapes require potassium throughout their growth cycle, but needs vary by stage:

• Early growth stages (budbreak and blooming): Increase potassium due to higher nutrient demand.
• Fruit enlargement and ripening: Reduce potassium slightly, as nutrient needs decline. Adjust timing based on soil tests and weather conditions for best results.

4. Soil Conditions Matter

Soil properties greatly influence potassium availability. In potassium-deficient or saline soils, supplemental potassium is necessary. Match fertilizer type and dosage to soil type and pH. For example, sandy or alkaline soils may require sulfur-rich potassium fertilizers (e.g., potassium sulfate) to improve efficiency.

5. Balancing with Other Nutrients

Avoid conflicts between potassium and other nutrients (e.g., nitrogen, phosphorus). Coordinate potassium applications with balanced fertilization to ensure comprehensive nutrient uptake. For instance, pair potassium with low-nitrogen fertilizers to prevent excessive vegetative growth.

6. Optimal Application Methods

Application methods affect potassium effectiveness. Soil incorporation alone may be inefficient. Instead, use foliar spraying or soilless topdressing to boost absorption. Avoid applying fertilizers during hot weather to prevent leaf burn.

7. Monitoring and Management

Regularly test soil and tissue samples to assess potassium levels and adjust strategies. Complement fertilization with vineyard management practices (e.g., pruning, pest control) to maximize growth and yield.

rational potassium fertilization is key to productive, high-quality, and efficient grape cultivation. Tailor strategies to growth stages, soil conditions, and market goals for optimal results. Proper potassium use not only meets plant needs but also enhances fruit quality and disease resistance, supporting the sustainable growth of the grape industry.