1、The combined nitrogen and phosphorus fertilizer application reduced

Despite this, the effects of N and P fertilizers on the expression of genes involved in soil carbon (C), nitrogen (N), and phosphorus (P) cycles, and their consequent influence on soil multifunctionality, remain unclear. To investigate this, we conducted a long-term nine-year experiment.

2、Optimizing Nitrogen and Phosphorus Fertilizer Application for Wheat

This study observed that phosphorus fertilization alters soil alkali-hydrolyzable nitrogen, available phosphorus, and available potassium, which in turn enhances wheat uptake of nitrogen, phosphorus, and potassium, ultimately influencing grain yield.

3、Fertilization with Phosphorus, Potassium, and Other Nutrients

P and K fertilizer management should minimize the transformation of applied nutrients to nonavailable forms and maximize crop absorption. To this end, banding or fertigation may be an alternative to broadcast applications.

Effect of nitrogen, phosphorus and potassium fertilization management

Relevant studies have shown that moderate nitrogen, phosphorus, and potassium fertilization can effectively increase the nutrient content of plant leaves and soil, thereby increasing crop yield and quality (Zhang et al., 2020; Wan et al., 2021; Zhang et al., 2022).

What Is a Low Nitrogen High Phosphorus Fertilizer?

By optimizing the nitrogen-to-phosphorus ratio, LNHP fertilizers can improve the efficiency of nutrient uptake and utilization by plants. This can result in reduced fertilizer application rates and lower environmental impact.

Understanding the Big Three: Nitrogen, Phosphorus, and Potassium

Understanding the “Big Three” nutrients – Nitrogen, Phosphorus, and Potassium (NPK) – is essential for effective fertilizer management in agriculture. These primary macronutrients play a crucial role in plant growth and development. Here’s a deeper look at each of them:

Understanding NPK Compound Fertilizers: Composition, Production

Applying NPK compound fertilizer once can provide multiple nutrients required by crops at the same time, without the need to apply single fertilizers such as nitrogen, phosphorus, and potassium separately, simplifying fertilization operations and improving fertilization efficiency.

Coupled Effects of Reduced Chemical Fertilization and Biochar

After applying chemical fertilizer in combination with PSB, soil net ammonification and N mineralization tended to be reduced considerably, with substantial reductions of 39–76% and 24–45%, respectively; reversely, soil net nitrification was stimulated by an increased PSB substitution rate.

Influence and selection of nitrogen and phosphorus compound fertilizers

The application of NP compound fertilizers mainly affects the clogging of the emitter by influencing the water quality. In this study, the water quality parameters pH, Ca 2+, Mg 2+, HCO 3-, SO 42-, PO 42-, total hardness, and zeta potential of the brackish water were tested.

Differential effects of sole and phosphorus based nitrogen fertilizer

That’s why the current study was conducted with aim to evaluate the potential effect of sole nitrogen (ammonium and nitrate) and phosphorus-based nitrogen fertilizers on wheat growth, NUE and PUE.

Compound fertilizers are formulated from three primary nutrients—nitrogen (N), phosphorus (P), and potassium (K)—in specific ratios. They are widely used in agricultural cultivation to meet plants' nutritional needs, promote healthy crop development, and boost yields. excessive application can lead to resource waste, environmental damage, and negative impacts on crops. rational formulation based on soil conditions and crop requirements is essential to ensure fertilizer effectiveness and safety.

I. Components of Compound Fertilizers

Compound fertilizers typically contain the following elements:

1. Nitrogen (N): A critical nutrient for plant growth, nitrogen promotes development, enhances photosynthesis, and improves yield. Common nitrogen fertilizers include urea, ammonium nitrate, and potassium nitrate.
2. Phosphorus (P): Essential for root development, disease resistance, and overall plant health. Phosphorus sources include superphosphate, triple superphosphate, and potassium dihydrogen phosphate.
3. Potassium (K): Vital for maintaining cell membrane stability, water balance, and stress resilience. Potassium fertilizers include potassium sulfate, potassium chloride, and potassium magnesium sulfate.

II. Principles for Applying Compound Fertilizers

1. Soil-Specific Selection: Soil type, texture, and fertility influence nutrient absorption. Choose fertilizers tailored to local soil conditions to optimize efficacy.
2. Crop-Oriented Formulations: Different crops have varying nutritional demands. Adjust fertilizer types and dosages based on growth stages and species-specific needs.
3. Controlled Application Rates: Excessive use causes soil imbalance, salt accumulation, and reduced crop quality. Follow a "small doses, multiple applications" approach to minimize risks.
4. Balanced Nutrient Ratios: Mixing fertilizers with disproportionate nutrient ratios may reduce efficiency. Adhere to labeled N-P-K ratios to avoid wastage.

III. Methods of Application

1. Basal Application: Evenly spread fertilizer over the soil surface and incorporate it into the tillage layer. Suitable for large fields and long-term cropping systems.
2. Topdressing: Apply during the growing season via furrows, holes, or foliar spraying based on crop nutritional phases and soil fertility.
3. Foliar Spraying: Dissolve fertilizer in water and spray directly onto leaves to reduce loss and improve absorption. Effective for fruit trees, vegetables, and row crops.

IV. Precautions

1. Avoid Alkaline Mixtures: Phosphorus and potassium components react with alkaline substances, reducing effectiveness.
2. Avoid Acidic Mixtures: Nitrogen compounds may degrade when mixed with acids.
3. Prevent Heavy Metal Contamination: Ensure fertilizers are free from heavy metals to avoid toxicity risks.
4. Moderation Is Key: Overapplication disrupts soil ecology and harms crops. Prioritize precise, controlled dosing.

When using low-nitrogen, high-phosphorus, and high-potassium compound fertilizers, prioritize soil testing and crop-specific needs. Optimize application rates, nutrient ratios, and methods while avoiding contaminants. Scientific fertilization practices enhance nutrient uptake, foster robust crop growth, and maximize yields.