1、Nutrient Management for High Efficiency Sweet Potato Production

Nutrient management play an important role in sweet potato production. It is vital to investgate the patterns of growth and develpoment and nutrient absorption in sweet potato, and screening some special traits associated with yield production of genotypes as well as fertiliser optimum managements.

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、Long

In view that sweet potato is a typical ‘‘K-favoring’’ food crop and soil K shortage severely reduces sweet potato productivity in southern China (Jin et al., 2021), the enhancement of K stocks in soils planting sweet potato and K uptake improvement of sweet potato should receive more focus.

4、Agronomic performance of sweet potato with different potassium

The objective of this study was to collect information on how the increased potassium dominant fertilizer levels and also the additional high-dose fertigation can affect the phytonutrient...

Effects of Bio and water

Although this technology has been used in sweet potato cultivation in northern China, the optimal scheme for high yield and good quality is lacking in systematic research, especially in the...

Fulvic Acid and Potassium Application to Mitigate Drought Effects on

Our study showed that having a proper amount of potassium was highly significant for optimal sweet potato growth and yield, and most importantly, for improving the effectiveness of fulvic acid.

Optimal combination of potassium fertilizer and drip irrigation for

Methods Field experiments were conducted to study the responses of potato growth, yield and quality to different types of potassium fertilizer and irrigation amount in Yulin, northern Shaanxi. ‘Qingshu No. 9’ was used as the test material.

Effect of potassium fertilization on sweet potato cultivation

After harvesting, the total and marketable yield of storage roots, soil available K levels, and nutrient contents in shoots, storage roots and whole plant were assessed. The maximum efficiency was...

Response of potato growth and yield to potassium fertigation with a

Overall, this study demonstrates that subsurface drip fertigation with potassium optimizes potato yield, offering a sustainable approach for resource management in agriculture.

Effect of Fertilization Level on the Yield, Carotenoids, and Phenolic

The objective of this study was to collect information on how the increased potassium dominant fertilizer levels and also the additional high-dose fertigation can affect the phytonutrient contents and yields in an orange- and a purple-fleshed sweet potato cultivar.

Potassium fulvate is an organic fertilizer containing multiple organic acids and trace elements, which plays a positive role in soil improvement and crop growth. The optimal proportion of potassium fulvate for sweet potato fertigation varies depending on soil conditions, crop requirements, and fertilization objectives. Below are some recommendations for the proportion of potassium fulvate in sweet potato fertigation:

1. Soil Conditions: Before fertilization, it is essential to understand the soil's pH and nutrient status. If the soil is acidic, the proportion of potassium fulvate can be increased; if alkaline, it may be reduced or omitted. Additionally, soil nutrient content (e.g., nitrogen, phosphorus, potassium) should be considered to ensure balanced application.

2. Crop Requirements: Different crops have varying fertilizer needs. Sweet potato is a potassium-loving crop, so the potassium content in potassium fulvate should be adjusted accordingly. Attention should also be paid to other nutrients, such as nitrogen, phosphorus, boron, and zinc.

3. Fertilization Objectives: To enhance soil fertility or improve soil structure, the proportion of potassium fulvate can be increased. For promoting crop growth and yield, adjustments should be made based on crop growth stages and nutrient demands.

4. Fertilization Methods: Potassium fulvate can be used alone or mixed with other fertilizers. Follow the principle of "small amounts, multiple applications" to avoid excessive salt accumulation or nutrient excess in the soil.

5. Timing of Fertilization: Spring is generally the best time for applying potassium fulvate, as rising temperatures and active crop growth enable efficient nutrient absorption. Summer rains may cause nutrient loss, so fertilization is not recommended. Autumn applications help crops store nutrients but avoid direct contact with seeds to prevent germination issues.

6. Dosage: The amount of potassium fulvate varies based on soil conditions, crop needs, and objectives. Generally, 2–5 kg per mu (0.066–0.165 kg/ha) meets most sweet potato requirements. Adjust according to actual soil and crop conditions.

7. Application Methods: Potassium fulvate can be applied via foliar spraying, broadcast spreading, or furrow application. Foliar spraying improves nutrient uptake efficiency but requires careful concentration control. Soil application methods are more direct but must prevent nutrient runoff and environmental contamination.

8. Efficacy Evaluation: Regularly monitor crop growth and soil conditions post-application to adjust strategies. Address issues like poor efficacy or fertilizer damage promptly.

the optimal proportion of potassium fulvate for sweet potato depends on soil, crop, and fertilization goals. Prioritize scientific application, balanced ratios, and appropriate dosages to ensure healthy growth and high-quality yields.