1、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.

2、(PDF) Determination of Fertilizer Doses of Sweet potato (Ipomoea

The tuber yield of sweet potato varies depending on growing area therefore a fertilization program, especially in the type and the dose of the fertilizers, is required.

3、Growing Sweet Potatoes

Success in sweet potato production depends on proper field selection, tailored fertility programs, and efficient nutrient uptake—particularly potassium, which is required in higher quantities than nitrogen or phosphorus.

4、Nurturing Sweet Potato Growth: The Ideal Fertilizer Choice

One crucial aspect of sweet potato cultivation is choosing the right type of fertilizer. The ideal fertilizer for sweet potatoes should provide a balanced mix of nutrients, with a higher emphasis on potassium and a moderate amount of nitrogen.

Fertilizing Sweet Potatoes: How, When, and What to Use

A suitable synthetic fertilizer for established sweet potato plants will often have a ratio such as 5-10-10 or, even better, a higher potassium ratio like 8-24-24 or 5-10-15.

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.

Response of Soil Chemical Properties, Performance and Quality of Sweet

This study revealed that the optimum K fertilizer in the form of KCl for sweet potato cultivation is 80 kg ha -1 on a tropical Alfisol. However, in another location Calabar, southeast Nigeria, Uwah et al., [15] recommended 120 - 160 kg ha -1 KCl (muriate of potash) fertilizer for the sweet potato.

Sweet Potato Fertilization Requirements

Growers prefer to apply the entire phosphorus amount, with half of the required nitrogen and ¼ of the required potassium, as basal fertilization (a 5-10-10 fertilizer can be used).

Fertilizing Sweet Potatoes: What Is The Best Fertilizer?

What Are The Best Fertilizers For Sweet Potatoes? The ratio of 5-10-10 or 12-12-12 is the best fertilizer for sweet potatoes. The rule of thumb for this task is to pick produce that is low in nitrogen and high in potassium and phosphates. When buying commercial fertilizers, be sure to check the packaging for the NPK ratio.

Best Fertilizer for Sweet Potato – Garden Success Guide

Choose a balanced, all-purpose fertilizer with equal parts nitrogen (N), phosphorus (P), and potassium (K), such as 10-10-10. Apply fertilizer before planting and when vines start to spread, but avoid excessive nitrogen early on to prevent lush foliage at the expense of tuber development.

Applying an appropriate amount of potash fertilizer is crucial when growing sweet potatoes (Ipomoea batatas). Potash fertilizer enhances soil water retention, promotes root system development, accelerates sugar accumulation, improves fruit quality, and boosts the crop’s stress resistance. Below is a detailed guide on rational potash usage for one mu of sweet potato cultivation.

I. Understanding the Roles of Potash Fertilizer

1. Increase Yield: Potassium facilitates the conversion of carbohydrates in plants, supporting healthy growth and fruit formation, thereby boosting productivity.
2. Improve Quality: Potash enhances the texture and nutritional value of sweet potatoes, resulting in finer flesh and higher sweetness.
3. Enhance Disease Resistance: Potassium strengthens the plant’s ability to withstand adverse conditions and reduces disease risks.
4. Facilitate Micronutrient Absorption: Potash aids in the uptake and utilization of other essential nutrients.

II. Determining Fertilizer Dosage

1. Soil Testing: Conduct soil tests before fertilization to assess potassium levels and soil conditions. Combine test results with local climate and farming practices to create a tailored fertilization plan.
2. Recommended Usage: For typical soils, applying 50–100 kg of potassium sulfate compound fertilizer per mu is appropriate. For potassium-deficient soils, increase the dosage slightly, but avoid overuse to prevent soil salinization or root burn.

III. Fertilization Methods

1. Base Application: Spread potash evenly on the soil surface and incorporate it into the soil. Avoid direct contact with seeds to prevent germination issues.
2. Topdressing: Supplement potash during critical growth stages. Ensure proper soil contact to avoid root damage from concentrated fertilizer.

IV. Key Considerations

1. Avoid Overapplication: Excessive potash may leach into groundwater or disrupt soil structure.
2. Combine with Other Fertilizers: Use potash alongside nitrogen and phosphorus fertilizers for optimal results. For example, pairing with nitrogen promotes growth and flowering, while phosphorus supports root development.
3. Timely Application: Apply fertilizer during early and mid-growth stages to align with the sweet potato’s potassium demand.

Rational potash management is key to improving sweet potato yield and quality. Scientific fertilization not only meets the crop’s needs but also sustains soil health and ecological balance. Farmers are encouraged to prioritize potash application and management to ensure robust harvests.

Note: 1 mu ≈ 0.067 hectares (ha).