1、Optimal Use of Potassium Fertilizer for Sweet Potato Cultivation

By selecting the right fertilizer type, timing, dosage, and application method, you can create an optimal environment for sweet potato growth, ensuring efficient nutrient uptake and superior results.

2、Effects of Various Potassium Fertilizer Dosages on Agronomic and

Based on factors such as sweet potato yield and starch content, the recommended amount of potassium fertilizer was 200 kg ha−1, which has significant economic benefits and theoretical value.

3、When to Fertilize Sweet Potatoes for Optimal Growth and Yield

For sweet potatoes to thrive, proper fertilization is key, especially knowing when to do it. The right timing ensures your plants get the nutrients they need without getting overwhelmed. In my experience, the first step is to apply a water-soluble fertilizer about two weeks after planting the slips. This is crucial to give them a good start.

4、Long

Long-term fertilizer application contributed to higher yield, yield stability, and K uptake of sweet potato. NPK+PM and NPK+RS treatments both showed the best promoting effect on plant growth.

How to Use Potassium Fertilizer for Sweet Potatoes?

In this comprehensive guide, we will delve into the world of sweet potato fertilizer application, exploring the best practices, common mistakes, and expert insights to help you optimize your sweet potato crop.

Sweet Potato Fertilizer Requirements and Recommendations: Management

Sweet potato cultivation requires adequate potassium (K) fertilization to ensure optimal growth and yield. Potassium is another essential nutrient that plays a crucial role in various physiological processes of the sweet potato plant.

Fertilizing Sweet Potato: What, When & How to Apply

Choosing the right fertilizer for Sweet Potato? Start fertilizing smarter with our tips on timing, nutrient needs, and application methods.

How to Apply Fertilizer to Sweet Potatoes? Boost Your Harvest

In this comprehensive guide, we will delve into the world of sweet potato fertilizer application, exploring the best practices, common mistakes, and expert insights to help you optimize your sweet potato crop. Understanding Sweet Potato Fertilizer Needs

Basal application of equal ratio of citrate and water soluble potassium

At the 30, 60, 90, and 120 days of transplanting, plants were sampled for the determination of stem length, biomass, K content, and the tuber yield at the end.

Sweetpotato responses to potassium rate and timing in tropical sandy

The benefits of K timings and application rates on sweetpotato yield were greater in K-deficient soils with the maximum yield of sweetpotato (25.8–34.3 Mg ha −1) at the estimated rate of 153–179 kg ha −1 K 2 O in three application times.

The best times to apply potassium fertilizer to sweet potatoes are during the early growth stage and mid-growth stage. These periods are critical for the plant's development and have higher potassium demands. Applying potassium fertilizer during these stages promotes growth, increases yield, and improves quality.

I. Early Growth Stage

The early growth stage spans from sowing to the initiation of root formation. This is a foundational period for nutrient uptake. Applying potassium fertilizer here enhances root development, disease resistance, and photosynthetic efficiency, laying the groundwork for healthy growth.

1. Timing: This stage corresponds to the seedling period, approximately 40-60 days after sowing. During this time, roots begin to develop, and nutrient demands rise. Applying potassium meets the plant’s needs and supports robust growth.

2. Methods:

   • Foliar Spraying: Dissolve potassium fertilizer in water and spray directly onto leaves using a misting device. This allows quick absorption but requires careful dilution to avoid "burning" young shoots.
   • Soil Application: Evenly spread the fertilizer over the planting area and incorporate it into the soil via tillage. Suitable for large-scale farms, but attention to dosage and soil moisture is critical.

II. Mid-Growth Stage

The mid-growth stage begins when sweet potatoes start forming roots. This peak growth phase demands intensive nutrients. Potassium application during this period boosts root expansion, yield, and quality.

1. Timing: Occurring around 70-90 days after sowing, this stage coincides with active root formation. Timely potassium supplementation ensures adequate nutrient supply for developing roots.

2. Methods:

   • Foliar Spraying: Apply by spraying dissolved potassium directly onto forming roots, ensuring concentrated nutrient delivery to growth zones.
   • Soil Application: Broadcast fertilizer evenly over the soil and till it in. This method suits large fields but requires precise control of dosage and soil humidity.

III. Key Considerations

1. Dosage: Adjust based on sweet potato variety, soil fertility, and climate. A typical recommendation is 50-100 kg of sulfate of potash per mu (0.067 hectares).
2. Application Technique:
   • Ensure even distribution to prevent root damage.
   • Avoid direct contact with young shoots to prevent burning.
3. Timing: Apply at 40-60 days (early stage) and 70-90 days (mid-stage) post-sowing. Adapt timing to local weather and soil conditions.
4. Fertilizer Selection: Use climate-appropriate formulations (e.g., sulfate of potash) and follow labeled instructions to avoid overapplication.
5. Effectiveness Monitoring: Regularly observe plant health, root development, and fruit quality. Adjust strategies if issues like stunted growth or poor quality arise.

Applying potassium fertilizer during the early and mid-growth stages is vital for sweet potato development. Proper dosage, timing, and methods maximize yields and quality. Regular monitoring ensures optimal results.