1、Impacts of nitrogen (N), phosphorus (P), and potassium (K) fertilizers

NPK treatment maintained a balanced soil nutrient budget, promoting soil sustainability. Soil nutrient deficiency is one of the significant challenges in grain production, particularly nitrogen (N), phosphorus (P), and potassium (K).

2、Effects of Substituting Organic Fertilizers for Chemical Nitrogen

Furthermore, the available phosphorus and potassium contents also exhibited an increasing trend with the proportion of substitution of organic fertilizers for chemical nitrogen fertilizers.

3、Substituting partial chemical nitrogen fertilizers with organic

Long-term application of excessive nitrogen (N) not only leads to low N use efficiency (NUE) but also exacerbates the risk of environmental pollution due to N losses. Substituting partial chemical N with organic fertilizer (SP) is an environmentally friendly and sustainable fertilization practice.

4、Recent advances in nitrogen and nano

Although not much is known about the usage of NFs, significant results have been observed in various plant species. Granular fertilizers are commonly applied to the soil for the nitrogen requirement of plants.

Full article: Nitrogen fertilizers and the future of sustainable

On the one hand, nitrogen deficiency limits food production in developing areas, while excessive nitrogen compromises soil fertility, human health, and agricultural and environmental sustainability in the industrialized world.

Review of research and innovation on novel fertilizers for crop

This review highlights nanofertilizers, biofertilizers, and next-generation enhanced-efficiency fertilizers, examining nutrient-release mechanisms, yield impacts, environmental outcomes, and...

Organic Fertilizers as Partial Substitutes for Chemical Fertilizers

To address these, a combination of 15N incubation experiments and pot experiments were conducted to investigate biotic and abiotic N immobilization features and their effects on N fertilizer fate under long-term different fertilization regimes in paddy soils in China.

Recent advances in the chemistry of nitrogen, phosphorus and potassium

This necessitates the study of the major mineral fertilizer elements (nitrogen (N), phosphorus (P), and potassium (K)), the forms in which they are applied to soil, and their chemistry/reactions in soil.

Investigating sustainable alternatives to nitrogen fertilizers

We are planning to use the insights from this work to develop rhizobial strains that fix nitrogen more efficiently than the strains that are currently available.

Partial substitution of nitrogen fertilizers by organic products of

Collectively, this study gives an optimal solution to replace nitrogen fertilizers by co-composted organic product and provides a deeper understanding of the impact of rural waste co-composted product on agricultural soils along with their value for agricultural utilization.

Nitrogen and potassium fertilizers are two major types of chemical fertilizers that play critical roles in agricultural production. Nitrogen fertilizers primarily provide nitrogen essential for plant growth, promoting chlorophyll synthesis and increasing crop yields. Potassium fertilizers, meanwhile, effectively improve soil structure, enhance crop stress resistance, and elevate product quality.

I. Mechanisms of Nitrogen and Potassium Fertilizers

1. Mechanism of Nitrogen Fertilizers

   • Nitrogen, a vital nutrient for plants, promotes protein synthesis, photosynthesis, and respiration, thereby accelerating plant growth and yield. It also stimulates root development, improving water and nutrient absorption, while enhancing drought and disease resistance.

2. Mechanism of Potassium Fertilizers

   • Potassium, another essential nutrient, aids in sugar synthesis and boosts stress resistance (e.g., drought, cold, pests). Additionally, it activates enzymes, accelerates metabolic processes, and strengthens disease and pest resistance.

II. Alternatives to Nitrogen and Potassium Fertilizers

1. Ammonium Sulfate (NH₄H₂SO₄)

   • A common nitrogen fertilizer with high nitrogen content and low cost. its rapid decomposition may increase soil salinity. Usage should be moderated to avoid overapplication.

2. Potassium Nitrate (KNO₃)

   • A high-efficiency nitrogen-potassium compound fertilizer with balanced N:K ratio. It mitigates soil salinity issues from ammonium sulfate while improving crop quality and yield. its higher cost and safety requirements during application must be considered.

3. Urea (CO(NH₂)₂)

   • A widely used nitrogen fertilizer with high nitrogen content and low cost. It meets crop nitrogen demands and acts as an organic matter source. its slow decomposition may raise soil salinity, requiring controlled usage.

4. Potassium Dihydrogen Phosphate (KH₂PO₄)

   • A high-efficiency nitrogen-phosphorus-potassium compound fertilizer with balanced nutrients. It enhances crop quality and yield but comes at a higher cost and requires careful handling.

5. Potassium Chloride (KCl)

   • A common potassium fertilizer with high potassium content and low cost. It improves crop quality and yield but has poor solubility, potentially increasing soil salinity. Usage should be regulated.

III. Application Methods for Nitrogen and Potassium Fertilizers

1. Nitrogen Fertilizer Application

   • Follow the "small doses, frequent application" principle. Apply modest amounts based on crop growth stages: more in early stages to support growth, less in later stages to avoid compromising quality.

2. Potassium Fertilizer Application

   • Apply "moderate amounts, frequently." Tailor usage to crop stages: initial applications boost growth, while reduced late-stage use prevents quality loss. Consider soil pH and texture for optimal results.

IV. Precautions for Nitrogen and Potassium Fertilizers

1. Fertilizer Selection

   • Choose fertilizers based on crop stage, soil conditions, and climate. Prioritize reliable, stable products for effectiveness and safety.

2. Application Methods

   • Adhere to "small doses, frequent application" to prevent soil salinity. Align fertilization with crop needs and soil conditions for maximum efficiency.

3. Storage and Management

   • Store fertilizers in moisture-proof, corrosion-resistant conditions to prevent caking. Maintain organized inventory records and regular monitoring for quality control.

Nitrogen and potassium fertilizers are indispensable in agriculture. Their optimal use depends on crop requirements, soil conditions, and climate. Proper storage and management ensure safe application and environmental sustainability.