Agricultural DAP

Located in China's core agricultural chemical production hub, the AOLANSU factory has specialized in DAP production for many years. We utilize high-purity phosphoric acid and liquid ammonia as raw materials, subjecting them to rigorous, end-to-end quality control throughout the entire production chain—including synthesis, granulation, drying, and screening. Consequently, a Certificate of Analysis (COA) is issued for every batch of Agricultural DAP produced. The factory holds certifications for both the ISO 9001 Quality Management System and the ISO 14001 Environmental Management System. Our production processes are mature, environmentally sound, and fully compliant with international environmental standards; furthermore, our products feature extremely low levels of heavy metal impurities, thereby aligning perfectly with the principles of green agriculture.

Core Advantages

1. High Nutrient Density & High Efficiency

Unlike single-nutrient nitrogen or phosphorus fertilizers, Agricultural DAP features a scientifically balanced nitrogen-to-phosphorus ratio. With over 90% of its phosphorus content being water-soluble, it is rapidly absorbed by crop root systems. The fertilizer offers long-lasting efficacy (with an effective duration of approximately 120 days), providing sustained nutrient supply from a single application. This reduces the frequency of fertilization, thereby lowering labor costs.

2. Broad Applicability & Significant Yield Increase

Suitable for a wide range of crops—including grain crops (rice, wheat, corn), cash crops (cotton, vegetables, oilseeds), and fruit trees (apples, pears, citrus)—this product can be utilized as either a base fertilizer or a top dressing. It is compatible with various application methods, such as broadcasting, spot application, or furrow application. By promoting tillering, root system development, and flower bud differentiation, it enhances the crops' resistance to cold and drought while simultaneously improving both fruit quality and overall yield.

3. Stable Quality, Convenient Storage & Transport

Agricultural DAP features uniform granules and moderate hardness; with a particle size of 2–4 mm, it is resistant to washout by rainfall. Its moisture content of ≤2.0% effectively prevents caking during storage and transport. Typically packaged in standard 50kg PP woven bags (with PE liners)—which are moisture-proof and durable—it also supports customized packaging and bulk transport options, making it ideal for both cross-border logistics and on-farm storage.

4. Eco-Friendly, Safe, and Sustainable

Its mildly alkaline nature allows for subtle adjustments to soil pH, reducing phosphorus fixation by the soil and thereby enhancing fertilizer utilization efficiency. With extremely low heavy metal content, it poses no risk of soil or groundwater contamination, fully aligning with global standards for green agriculture and sustainable development.

Real-World Application Case Studies

Case : Maize Cultivation in Africa (Northern Nigeria, 2024)

On a 2,000-mu (approx. 133-hectare) maize field characterized by arid, sandy soil, AOLANSU Agricultural DAP was applied as a base fertilizer at a rate of 25 kg per mu; no top-dressing was required during the seedling stage. Compared to control plots treated with ordinary DAP, the results were remarkable: maize emergence rates increased by 15%; stalks were sturdier with well-developed aerial roots; drought resistance was significantly enhanced; the growth cycle was shortened by 7 days; and the yield reached 420 kg per mu—representing a 22% increase. Furthermore, the fertilizer remained free of caking and demonstrated stable efficacy, proving highly compatible with the local extensive farming practices.

Product Specifications

FAQ

Q1: What kind of soil is suitable for agricultural DAP?

A1: Our agricultural DAP is weakly alkaline, which is most suitable for neutral and acidic soils. It can slightly adjust the soil pH value, reduce the fixation of phosphorus by the soil, and improve the fertilizer utilization rate. It is not suitable for strong alkaline soils, which will easily lead to phosphorus fixation and reduce the fertilizer effect. Shandong Aolansu’s factory in China has tested the adaptability of the product in various soils, ensuring good application effect.

Q2: Can agricultural DAP be mixed with other fertilizers?

A2: It can be mixed with nitrogen fertilizers such as urea and ammonium nitrate, which can complement nutrients and improve the overall fertilizer effect. However, it should not be mixed with alkaline fertilizers such as plant ash and lime, because it will cause nutrient loss and affect the fertilizer effect. Shandong Aolansu will provide detailed mixing guidelines for free to help you use it correctly.

Q3: What are the advantages of purchasing agricultural DAP from your China supplier?

A3: Shandong Aolansu has its own factory in China, which can provide factory-direct prices, reducing your procurement costs. We have rich production experience and strict quality control, ensuring stable product quality and consistent fertilizer effect. We also provide sufficient stock, timely delivery and complete export documents, which can fully meet your bulk procurement needs.

Cooperation and Services

As a supplier deeply rooted in the agrochemical sector, AOLANSU offers flexible cooperation models: We support small-batch trial orders (starting from 1 ton), enabling clients to easily test the fertilizer's efficacy. Long-term major clients benefit from direct-from-factory pricing, eliminating intermediary costs. We maintain ample inventory year-round to guarantee timely delivery during peak planting seasons. Our experienced logistics team ensures rapid delivery to regions including Southeast Asia, Africa, South America, and Europe, providing end-to-end customs clearance support to ensure the safe and undamaged delivery of all shipments.