1、Role of Slow

Release tests and two incubation experiments were conducted in order to evaluate the role played by nanocomposites in controlling the availability of nitrogen and phosphate in the soil.

2、Effect of different components of single superphosphate on organic matter degradation and maturity during pig manure composting

Single superphosphate (SSP) as an additive could improve phosphorus availability and reduce nitrogen loss for composts, but few studies have explored the influence of SSP on the transformation of carbon fractions in composting.

3、Nitrogen removal from digested piggery wastewater using fermented superphosphate within the pretreatment stage and an MAP fertilizer pot test

The results show that the recovered FSP/MAP phosphate fertilizer efficiency in this study reached the level of common chemical fertilizers and was better than that of some high-quality compound phosphate chemical fertilizers.

4、Agronomic and environmental aspects of phosphate fertilizers varying in source and solubility: an update review

This review discusses and summarizes the latest reports regarding the agronomic utilization and potential environmental effects of different types of phosphate (P) fertilizers that vary in solubility.

5、Comparative Analysis between Ecotoxicity of Nitrogen

This study aimed to analyze the ecotoxicity of nitrogen-, phosphorus-, and potassium-based compounds to organisms of two different trophic levels in order to compare the toxic effect between high-purity substances and these substances as components of fertilizers.

Field comparisons of colloidal phosphate and superphosphate as sources of phosphorus in potato fertilizers

In all field comparisons,—a total of 13 having been made,—potato plants receiving fertilizer mixture formulated with superphosphate produced greater yields than those receiving the fertilizer mixtures which had Colloidal Phosphate as the source of phosphorus.

Effects of the continuous use of organic manure and chemical fertilizer on soil inorganic phosphorus fractions in calcareous soil

Evidence from many studies in similar fields worldwide 1, 2 clearly indicates the advantages of OM, which include reducing the use of CF, preventing non-point source pollution, improving soil...

Impacts of delayed addition of N

Delayed addition of Nitrogen (N)-rich and acidic substrates was investigated to evaluate its effects on N loss and compost quality during the composting process.

Phosphate Fertilizers for Sugarcane Used at Pre

Phosphate applications are still rare in sugarcane cultivation and can be done with phosphorus fertilizers of residual over. This study aims to evaluate the agronomic efficiency of phosphate fertilization before sugarcane planting and its effect on sugarcane yield.

Fertilizers and Food Production

Application of nitrogen fertilizer as straight material is much more prevalent than phosphate fertilizer. The reasons for these patterns are both agronomic and economic.

Nitrogen-phosphate fertilizer and superphosphate are both essential agricultural fertilizers that play critical roles in agricultural production. Each has distinct characteristics and is suited to different crops and soil conditions. Below is a detailed comparison of the two:

1. Composition and Mechanism of Action

• Nitrogen-Phosphate Fertilizer primarily consists of potassium nitrate (KNO₃), making it a high-nitrogen, medium-phosphorus compound fertilizer. It provides substantial nitrogen, ideal for crops requiring rapid growth or high nitrogen demand, such as wheat and corn. Its moderate phosphorus content also meets plants’ nutritional needs during development.
• Superphosphate mainly contains calcium dihydrogen phosphate (Ca(H₂PO₄)₂),归类为a high-phosphorus, low-nitrogen compound fertilizer. Its high phosphorus content suits crops with significant phosphorus requirements, like rapeseed and tobacco. Additionally, its calcium component improves soil structure and enhances water-and nutrient-retention capabilities.

2. Suitable Crops

• Nitrogen-Phosphate Fertilizer is best for nitrogen-demanding crops like rice and cotton. These crops require abundant nitrogen during early growth stages to support leaf development, which this fertilizer efficiently provides.
• Superphosphate is preferable for phosphorus-hungry crops like rapeseed and tobacco. Its phosphorus-rich formula promotes robust growth in such crops.

3. Fertilization Methods

• Nitrogen-Phosphate Fertilizer, due to its high nitrogen content, is typically used as a topdressing fertilizer during later growth stages. To prevent excessive application and potential seedling damage, it should be evenly mixed with other fertilizers.
• Superphosphate, with its phosphorus-rich profile, is often applied as a base fertilizer during land preparation, either by broadcasting or mixing with organic matter. This ensures sustained phosphorus supply throughout the crop’s lifecycle.

4. Soil Improvement Effects

• Nitrogen-Phosphate Fertilizer, despite its high nitrogen, has limited soil-ameliorating effects due to lower phosphorus content. It primarily addresses early-stage nitrogen needs but offers minimal improvement in soil structure or organic matter.
• Superphosphate significantly enhances soil quality. Its phosphorus boosts soil microbial activity, improves structure, and increases water-and nutrient-holding capacity, thereby enriching soil fertility.

5. Cost and Economic Efficiency

• Nitrogen-Phosphate Fertilizer is relatively expensive due to its high nitrogen content. its ability to optimize economic crop yields makes it cost-effective in certain contexts.
• Superphosphate is cheaper owing to its phosphorus focus. Yet, its lower phosphorus concentration may lead to underperformance in high-demand crops, causing resource waste.

6. Environmental Impact

• Nitrogen-Phosphate Fertilizer poses environmental risks, such as water pollution, if overused. Careful dosage control is essential to minimize ecological harm.
• Superphosphate has fewer environmental drawbacks. Still, excessive application can disrupt soil balance and damage groundwater resources.

Both fertilizers have unique strengths and weaknesses. The choice depends on crop type, soil conditions, and economic considerations. In practice, a balanced fertilization plan tailored to specific factors will maximize agricultural productivity.