1、Nitrogen efficiency indices for sustainable sweet potato production in

Improving nitrogen (N) use efficiency (NUE) is a key goal for develop sustainable production of sweet potatoes. Therefore, understanding the variability of crop traits and their impact on the main component of NUE are crucial to improve the agronomic management of this crop.

2、Effect of N Fertilizer Dosage and Base/Topdressing Ratio on Potato

The base N fertilizer dosage largely determined the root morphology, while topdressing fertilizer mainly affected the leaf photosystem, however, rhizosphere topdressing at the early stages of bud emergence did not immediately affect the leaf soluble protein and the sugar content.

3、Yield, nutrition, and nitrogen use efficiency of sweet potato in

Although sweet potato demand nitrogen (N), caution is needed when applying nitrogen fertilization, as excess N causes excessive growth of the shoot and a reduction in the yield of storage roots. This study aimed to assess sweet potato yield and nutrient uptake in response to increasing nitrogen (N) rates.

4、12 Best Fertilizer For Sweet Potato [Organic & Inorganic]

In this article, we have compiled a list of the 12 best fertilizers for sweet potatoes that can help you achieve optimal growth and yield.

5、Effects of nitrogen, phosphorus, and potassium fertilizers on storage

In conclusion, combined NPK fertilization enhances both storage root yield and nutrient use efficiency, with targeted P management playing a critical role in achieving high-yield and high-efficiency sweetpotato production.

Best NPK fertilizer for sweet potato

Base fertilizer is the key fertilizer to ensure the healthy growth of sweet potato seedlings and even the entire growth period. When applying basal fertilizer, it is mainly farm fertilizer and compound fertilizer.

Rates and split top

Abstract utrition and split topdress application of fertilizer to influence nutrients and production of sweet potatoes. This study aimed to evaluate the infl ence of nitrogen doses in the presence or absence of split topdres application on production of sweet potato. A field experiment was conducted at São Manuel Experimental Farm. The experiment

Effect of N Fertilizer Dosage and Base/Topdressing Ratio on Potato

Overall, adopting a suitable base/topdressing ratio can promote plant growth and improve tuber quality and yield. However, the relationship between the specific application amount and the ratio...

Sweet Potato Fertilizer Requirements and Recommendations: Management

Adequate nitrogen fertilization is crucial for achieving optimal yields when it comes to nitrogen fertilizers for sweet potatoes. Nitrate-based fertilizers: These fertilizers, such as calcium nitrate or potassium nitrate, are rich in readily available nitrogen.

15 Best Fertilizer for Sweet Potatoes Farm [Organic & Inorganic]

Discover the top 15 best fertilizer options for sweet potatoes, both organic and inorganic. From natural nutrients to synthetic blends, find the perfect fertilizers to maximize your sweet potato yield.

Sweet potato (also known as white potato or white-skinned sweet potato) is an important food crop and vegetable. Proper nitrogen fertilization during its planting process can significantly improve yield and quality. Below are some commonly used nitrogen fertilizers and their application methods:

1. Urea (Chemical Nitrogen Fertilizer)

Urea is one of the most widely used nitrogen fertilizers, containing a high concentration of nitrogen. When top-dressing sweet potato seedlings, urea is typically mixed evenly with soil before application. Methods include:

• Basal Application: Spread urea uniformly at the bottom of the seeding furrow, then cover with soil. Suitable for large-scale planting.
• Ditch Application: Dig a shallow ditch in the seeding furrow, spread urea into it, and cover with soil. This reduces nutrient loss but requires careful dosage to avoid over-fertilization.
• Hole Application: Dig a small pit near the planting site, add urea, and cover with soil. Ideal for small areas or high-efficiency fertilization needs.

2. Ammonia Water (Chemical Nitrogen Fertilizer)

Ammonia water has a lower nitrogen content but provides a stable nitrogen source, promoting healthy growth of sweet potato seedlings. Its application methods (basal, ditch, or hole) are similar to urea, depending on specific conditions.

3. Ammonium Nitrate (Fast-Acting Chemical Nitrogen Fertilizer)

Ammonium nitrate is a quick-release fertilizer rapidly absorbed by plants. For top-dressing, dissolve it in water before application to ensure fast nitrogen release into the soil. Application methods include basal, ditch, or hole fertilization.

4. Diammonium Phosphate (Compound NPK Fertilizer)

This compound fertilizer contains nitrogen, phosphorus, and potassium. Dissolve diammonium phosphate in water before application to ensure balanced nutrient absorption. Application methods align with basal, ditch, or hole fertilization.

5. Ammonium Sulfate (Chemical Nitrogen Fertilizer)

Ammonium sulfate is a high-nitrogen fertilizer. Dissolve it in water before application to maximize nitrogen release. Application methods include basal, ditch, or hole fertilization.

6. Ammonium Bicarbonate (Slow-Release Chemical Nitrogen Fertilizer)

Ammonium bicarbonate releases nitrogen slowly, ensuring a steady supply for plants. Dissolve it in water before application. Methods include basal, ditch, or hole fertilization.

Key Considerations for Top-Dressing Sweet Potato Seedlings

• Fertilizer Selection: Choose nitrogen types based on soil fertility and climate.
• Dosage Control: Follow recommended rates to avoid waste or soil salinization.
• Nutrient Balance: Coordinate nitrogen with phosphorus, potassium, and other nutrients.
• Timing: Avoid applying fertilizers during hot weather to prevent volatilization losses.

selecting and managing nitrogen fertilizers should consider the growth stage of sweet potatoes, soil conditions, and climate. Proper nitrogen management enhances yields and quality, delivering better economic benefits for farmers.