1、Controlled

ertilizers are generally coated products. Slow-release fertilizers are noncoated products in which the nutrient release is uncontrolled but slow; these are mainly urea-aldehyde reaction products but also include other slowly soluble products such as fertilizer

2、Slow and controlled release fertilizer

Slow and Controlled-release fertilizer is a new type of fertilizer that controls the release of nutrient elements through physical or chemical means to meet the nutritional needs of plants and minimize nutrient loss as much as possible.

3、Slow and controlled release nanofertilizers as an efficient tool for

Therefore, this review article provides insights into slow and controlled release nanofertilizers, including preparation approaches, nutrient-release techniques, analytical detection methods, current status, role in crop improvement, commercial viability, and future perspectives.

(PDF) Slow

Their use features numerous advantages in terms of significant savings of fertilizers' inputs, labour, energy and time. They favour increased water-use efficiency and markedly reduce the chemical...

Controlled and Slow Release Fertilizers Market

Controlled and slow release fertilizers sector is dominated by encapsulated or coated fertilizers, which account for 79.5% of the product types. These fertilizers feature a nutrient core surrounded by a protective coating that controls the release rate.

Market Prospect of Slow Release Fertilizer in China

The slow-release fertilizer is an environmental-friendly fertilizer which can slow down or control the nutrient release rate, to reduce nutrient loss and increase fertilizer use efficiency.

Manufacturing of slow and controlled release fertilizer

The scope of this chapter is focused on the commercial production of the slow and controlled release fertilizer using the encapsulation and hydrophobic methods.

Slow

The two most important groups of slow- and controlled-release fertilizers, according to their production process are: condensation products of urea-aldehydes (slow-release fertilizers), and coated or encapsulated fertilizers (controlled-release fertilizers). Supergranules and others are of lesser or only regional importance.

Controlled and Slow Release Fertilizers Market

Price volatility in conventional fertilizers, particularly nitrogen-based products like urea and ammonium nitrate, has become a critical driver for adoption of controlled and slow-release fertilizers (CRFs/SRFs).

Controlled release fertilizer: A review on developments, applications

Currently, there are two types of advanced fertilizers for the purpose of precision agriculture: (i) slow-release fertilizers (SRF), and (ii) controlled release fertilizers (CRF).

Guangzhou, as a major economic hub in southern China, hosts numerous enterprises specializing in agricultural technology and agro-product processing. Slow-release and controlled-release fertilizers (SRFs and CRFs), which release nutrients gradually over time, play a critical role in enhancing crop yields and improving soil quality. Several manufacturers in Guangzhou specialize in producing these fertilizers, leveraging technological innovation and rigorous quality management to support agricultural production.

1. Guangzhou Academy of Agricultural Sciences

Background: The Guangzhou Academy of Agricultural Sciences is a leading agricultural research institution in Guangdong Province, boasting robust scientific capabilities and advanced experimental facilities. It focuses on agricultural innovation, achieving notable success in the research and application of SRFs and CRFs.

Product Features: The academy’s SRFs and CRFs are characterized by high stability, long-lasting effects, and environmental friendliness. These fertilizers release nutrients evenly over an optimized period, minimizing nutrient loss, reducing environmental pollution, and improving crop nutrient uptake efficiency.

Technological Advantages: Adopting cutting-edge SRF/CRF technologies, the academy optimizes formulations and production processes to ensure product quality. It also conducts field trials and demonstration projects to validate technical applicability and effectiveness.

2. Guangdong Lvfeng Agricultural Technology Co., Ltd.

Background: Integrating R&D, production, and sales, Guangdong Lvfeng Agricultural Technology Co., Ltd. specializes in SRF/CRF manufacturing, committed to providing farmers with high-quality fertilizers.

Product Features: The company’s SRFs and CRFs exhibit excellent physicochemical properties and broad adaptability, catering to diverse crops and soil conditions to boost yields and crop quality.

Technological Advantages: Leveraging international SRF/CRF technologies, the company tailors innovations to domestic contexts. A strict quality control system ensures product reliability and consistency.

3. Guangzhou Tianhe Biotechnology Co., Ltd.

Background: Focusing on biotechnology product development, Guangzhou Tianhe Biotechnology produces microbial fertilizers and organic fertilizers. It emphasizes eco-friendly solutions for sustainable agriculture.

Product Features: The company’s microbial and organic fertilizers promote soil improvement, enhance soil fertility, and reduce environmental impact, ultimately improving crop growth and yields.

Technological Advantages: Utilizing advanced biotechnology and modern bioengineering, the company has developed proprietary bio-fertilizers with strong biological activity, ecological benefits, and adaptability to various crops and soils.

4. Guangzhou Luyuan Agricultural Technology Co., Ltd.

Background: Specializing in agricultural waste recycling (e.g., straw, livestock manure), Guangzhou Luyuan Agricultural Technology transforms waste into resources through scientific processing.

Product Features: The company’s waste-to-resource products are eco-friendly, energy-efficient, and highly effective, reducing agricultural pollution while conserving resources.

Technological Advantages: Combining advanced waste treatment technologies with green concepts, the company produces solutions that address agricultural waste challenges and provide sustainable resources for farming.

5. Guangzhou Huanong Biotechnology Co., Ltd.

Background: Guangzhou Huanong Biotechnology develops bio-pesticides and bio-fertilizers, prioritizing innovation and safety in agricultural inputs.

Product Features: The company’s bio-pesticides and bio-fertilizers are highly efficient, low-toxicity, and environmentally friendly, effectively controlling pests and diseases while improving crop growth and yields.

Technological Advantages: Incorporating advanced biotechnologies and information systems, the company has created proprietary products with strong biological activity, ecological benefits, and versatility across crops and soils.

Summary and Outlook

As a key agricultural city in southern China, Guangzhou hosts numerous enterprises advancing agricultural technology. SRFs and CRFs are vital for boosting crop productivity and soil health. Local manufacturers, through continuous innovation and optimization, provide high-quality fertilizers and technical support for agriculture. With evolving technological demands and market needs, these companies are poised to further strengthen R&D and expand their offerings, delivering more efficient, eco-friendly, and sustainable solutions for agricultural production.