1、Phosphorus use efficiency and management in agriculture

More recently it has been shown that when N and P are applied together as in the widely used P fertilizers, mono-ammonium phosphate (MAP) and diammonium phosphate (DAP), which contain ammoniacal N, N and P interact enhancing P uptake and improving nutrient use efficiency for both nutrients.

2、Agronomic effectiveness of partially acidulated rock phosphate and fused calcium

For one of the soils, as calculated using yield data, relative to freshly-applied superphosphate, the PARP and TP fertilizers were 15 to 30% as effective for the first crop, and 20 to 50% as effective for the second crop.

3、Effect of Different Fertilizer Application on the Soil Fertility of Paddy Soils in Red Soil Region of Southern China

The application of fertilizers have remarkably improved SOC and TN values compared with the CK, Specifically, the OM treatment resulted in the highest SOC and TN concentrations (72.5% and 51.2% higher than CK) and NPK treatment increased the SOC and TN contents by 22.0% and 17.8% compared with CK.

Performance of phosphogypsum and calcium magnesium phosphate fertilizer for nitrogen conservation in pig manure composting

When calcium magnesium phosphate fertilizer was added alone, N 2 O emission could be mitigated, but NH 3 emission and TN loss were increased. No matter how they were added, these two additives could improve the compost maturity and quality by introducing additional nutrients.

Evaluation of different amendments and foliar fertilizer for immobilization of heavy metals in contaminated soils

Among all the treatments, the addition of SE + SSP and SE + CMP exhibited the most efficiency in reducing Cd and Pb availability, respectively, in the soil.

Nitrogen, phosphorus, calcium, and magnesium applied individually or as a slow release or controlled release fertilizer increase growth and yield and affect

To comply with USEPA regulations, CAFOs must have a National Pollutant Discharge Elimination System Permit. One of the permit requirements is development of a nutrient management plan. The purpose of this plan is to reduce the amount of nutrients leaving CAFO sites that might pollute waterways.

Interaction of calcium, phosphorus and natural organic matter in electrochemical recovery of phosphate

To address the issues of eutrophication and the potential risk of phosphorus (P) shortage, it is essential to remove and recover P from P-containing streams to close this nutrient cycle. Electrochemical induced calcium phosphate (CaP) precipitation was shown to be an efficient method for P recovery.

Phosphate Fertilizers for Sugarcane Used at Pre

This study aims to evaluate the agronomic efficiency of phosphate fertilization before sugarcane planting and its effect on sugarcane yield. The study was carried out over three crop cycles at the Jalles Machado sugar-mill in Goianésia, GO, Brazil.

STRUVITE: A RECOVERED AND RECYCLED PHOSPHORUS FERTILIZER

manure, and struvite has emerged as a strong candidate. The primary motivation for phosphorus recovery is reduction of the phosphorus load when landspreading biosolids and manure on already phosphorus-rich fields, and only secondarily to economically produce high analysis phosphorus fertilizer b.

Optimizing water and phosphorus management to improve hay yield and water

Meanwhile, the combination of water and fertilizer can effectively improve the water-use efficiency and phosphorus-use efficiency of alfalfa (Lenssen et al., 2010), which is beneficial for reducing the loss of agricultural water in the field and the excessive use of phosphate fertilizers.

Navel oranges, also known as sweet oranges or citrus, are a widely beloved fruit prized for their sweet flesh and rich nutritional value. As a common compound fertilizer, calcium-magnesium-phosphorus fertilizer plays a critical role in promoting healthy growth and enhancing fruit quality. Below is a detailed guide on optimizing its use for navel oranges.

I. Selecting the Right Calcium-Magnesium-Phosphorus Fertilizer

1. Selection Criteria

• Ingredient Ratio: High-quality fertilizers contain balanced proportions of calcium, magnesium, and phosphorus, which are essential for plant growth. Ensure the ratio aligns with the nutritional needs of navel oranges.
• Purity: Fertilizers with higher purity deliver more effective nutrients, promoting better plant absorption. Check purity metrics before selection.
• Brand Reputation: Established brands often adhere to stricter manufacturing standards and quality control, reducing risks. Research reviews and user feedback to gauge reliability.

2. Product Recommendations

• Universal Type: Suitable for multiple crops, including navel oranges. Contains essential elements like calcium, magnesium, and phosphorus.
• Specialized Formula: Tailored for navel oranges, these may include microelements or organic matter to boost yield and quality.
• Slow-Release Type: Gradually releases nutrients, reducing application frequency and improving efficiency.

II. Application Methods

1. Base Fertilization

• Depth: Mix the fertilizer evenly with soil and apply near roots for optimal absorption.
• Dosage: Adjust based on soil conditions and tree size. Over- or under-application can harm growth or reduce fruit quality.
• Timing: Apply during early growth stages when nutrient demand is highest. This supports rapid development.

2. Topdressing

• Frequency: Apply every two months or during fruit expansion periods, depending on tree health and soil conditions.
• Concentration: Dilute appropriately to avoid root burn or nutrient deficiencies. Adjust based on soil moisture and plant needs.
• Methods: Foliar spraying or drip irrigation improves absorption efficiency and minimizes environmental impact.

III. Key Considerations

1. Fertilization Control

• Moderation: Avoid over-fertilization, which can lead to soil salinization or root damage. Tailor doses to soil fertility and plant status.
• Balanced Nutrients: Complement major elements (N-P-K) with trace minerals and organic matter to enhance disease resistance and fruit quality.

2. Timing

• Optimal Windows: Spring and autumn are ideal. Avoid summer heat and extreme weather to prevent stress.
• Post-Rain Precaution: Do not apply after heavy rain, as runoff reduces efficacy. Fertilize 24 hours before or after rain.

3. Soil Management

• Structure Improvement: Deepen and loosen soil before application to enhance aeration and water retention.
• pH Balancing: Test soil pH and adjust using lime (for acidic soil) or sulfur (for alkaline soil).

4. Pest and Disease Control

• Prevention First: Monitor plants regularly. Remove debris, use biopesticides, and adopt integrated pest management.
• Comprehensive Care: Combine fertilization with pruning, thinning, and rational irrigation to strengthen plant resilience.

Scientific use of calcium-magnesium-phosphorus fertilizer can significantly improve navel orange growth and fruit quality. excess application risks soil degradation and root damage. Prioritize balanced, moderate, and timely fertilization while integrating soil and pest management practices for optimal results.