1、Optimal Potassium Fertilizer Application Rate per Mu for Kiwifruit

To determine the optimal potassium fertiliser for kiwifruit, this study investigated the effects of different potassium sources on kiwifruit yield and postharvest quality as well as plant and soil nutrient contents in an orchard in Shaanxi Province, Northwest China.

2、Effects of different sources of potassium fertiliser on yield, fruit

To determine the optimal potassium fertiliser for kiwifruit, this study investigated the effects of different potassium sources on kiwifruit yield and postharvest quality as well as plant and soil nutrient contents in an orchard in Shaanxi Province, Northwest China.

3、Effects of di erent sources of potassium fertiliser

Abstract: Potassium plays an important role in improving crop growth, yield, and quality; however, choosing the right potassium fertiliser remains challenging. To determine the optimal potassium fertiliser for kiwifruit, this study investi-gated the effects of di erent potassium sources on kiwifruit ff

4、Effects of irrigation and fertilization management on kiwifruit yield

In terms of fertilization management, reducing the input of SOI nitrogen fertilizer can significantly increase the yield of kiwifruit by 32.76%, while reducing the input of SOI nitrogen, phosphorus and potassium can increase the yield by 3.45%.

Nutrient Needs and Fertilization Program for Kiwi Plants

For this reason, farmers invest in potassium applications (essential for fruit enlargement and sugar accumulation). Up to 100 kg/ha (89 lb/acre) of potassium might be applied as the fruit matures, while most farmers choose to perform foliar sprays.

Effect of nitrogen and potassium fertilization on fruit yield and

In this research, increasing doses of nitrogen (8-16-24-32 kg N da-1) and potassium (0-8-16-24-32-40 kg K2O da-1) fertilizers were applied to Hayward kiwifruit (Actinidia deliciosa) to...

Effect of Nitrogen and Potassium Fertilization on Yield and

This study lasted for 3 years and experimental data was obtained from a fertilizer trial arranged into completely randomized blocks, with three replications, installed in an orchard located in the Portuguese Region of Bairrada.

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reported that N fertilizer application rate averaged 927 kg/hm2 in the orchard region in Shaanxi Province. The application rates in the orchards were almost 3 times higher than the amount they needed.

Effects of different fertilizations on fruit quality, yield and soil

Kiwifruit yield and quality and soil nutrients were investigated in a kiwifruit orchard after long-term fertilization to understand the relationship between kiwifruit growth and soil nutrition.

Evaluation of current fertilization status in kiwifruit orchards on the

The nutrient input from chemical fertilizers in kiwifruit orchards were calculated according to the actually surveyed chemical fertilizer application rates and the nutrient content labeled on these fertilizers.

Kiwifruit is a significant fruit valued for its high nutritional content and appealing taste, making it a favorite among consumers. During kiwifruit cultivation, the use of potassium fertilizer is crucial, as it profoundly impacts plant growth and fruit quality. Below is a detailed guide on the optimal potassium fertilizer application rate per mu for kiwifruit:

1. Role of Potassium Fertilizer

Potassium is an essential nutrient for plant development, enhancing growth, stress resistance, and fruit quality. In kiwifruit production, potassium fertilizer improves fruit firmness, sweetness, and flavor while increasing yield and quality. It also strengthens the plant’s disease resistance, reduces pest and disease risks, and extends fruit shelf life.

2. Types of Potassium Fertilizer

Common potassium fertilizers include potassium sulfate, potassium chloride, and potassium nitrate. Potassium sulfate and potassium chloride are widely used due to lower costs, though their potassium content is relatively lower. Potassium nitrate has a higher potassium concentration but is more expensive. The choice depends on kiwifruit growth requirements and soil conditions.

3. Application Rates

The ideal potassium fertilizer rate per mu varies based on soil, climate, and kiwifruit variety. Generally:

• Potassium sulfate: 15–20 kg per mu.
• Potassium chloride: 10–15 kg per mu.
• Potassium nitrate: 10–15 kg per mu.

For poorer soils, increase rates cautiously to avoid excessive salt buildup.

4. Application Methods

Potassium fertilizer can be applied in three ways:

• Base application: Spread fertilizer on soil surfaces and incorporate.
• Topdressing: Directly apply to the soil as needed.
• Foliar spraying: Spray diluted fertilizer onto leaves to boost growth and fruit quality.

5. Timing of Application

• Spring: Crucial for promoting growth and fruit quality.
• Summer/Autumn: Enhances disease resistance and stress tolerance.
• Winter: Reduce application to avoid disrupting normal growth.

6. Application Strategies

• Combine with organic fertilizers to improve efficiency.
• Pair with phosphorus fertilizers to support growth and fruit quality.
• Mix with micronutrient fertilizers for overall plant health.

7. Key Considerations

• Avoid overapplication to prevent soil salinization.
• Adjust timing and methods based on soil and weather conditions.
• Balance with other fertilizers to ensure optimal plant health and fruit quality.

The optimal potassium fertilizer rate for kiwifruit depends on soil, climate, and variety. Careful selection of fertilizer type, application rate, timing, and method ensures efficient nutrient use and superior fruit quality. Attention to detail in potassium management is critical for maximizing kiwifruit yields and market value.