The Rural Development Administration (RDA) of South Korea, led by Director Lee Seung-don, has introduced a new biodegradable resin coating technology for slow-release fertilizers. Traditional slow-release fertilizers use plastic coatings to control nutrient release, reducing labor and environmental pollution. However, most existing coatings are made from non-degradable plastics, causing persistent soil contamination. The RDA’s initiative aims to support sustainable agriculture by replacing these plastics with environmentally friendly alternatives.
Farmers, agricultural industries, and environmental stakeholders are directly impacted by this policy. The new coating utilizes a blend of polybutylene succinate (PBS) and polylactic acid (PLA), both biodegradable plastics, to minimize plastic residue after fertilizer use. Field trials in rice paddies showed a 46.7% reduction in fertilizer usage and a 63.9% decrease in methane emissions compared to conventional fertilizers. Under composting conditions (58°C ±2°C for six months), 90% of the coating decomposed, confirming its eco-friendly properties.
A participating industry has established mass production systems for the new fertilizer, with commercial sales starting in March 2024. The RDA designated this product as the first ‘Excellent Fertilizer’ for its contribution to soil protection and agricultural competitiveness. Crop growth trials for peppers and cabbages are underway in 2024, and field validation for upland crops is planned for 2027. A pilot project for the new technology will be launched in 2028, aligning with international plastic regulations such as the EU’s ban on non-degradable plastics in fertilizers from October 2028.
Frequently asked questions include: How does the biodegradable coating affect fertilizer performance? The coating balances decomposition and nutrient release, ensuring effective fertilization throughout crop growth periods. What are the economic implications for farmers? While the new fertilizer is more expensive than conventional products, reduced labor, fuel costs, and long-term environmental benefits offer economic advantages. The RDA emphasizes ongoing public-private collaboration to further develop and disseminate sustainable agricultural technologies.
Metaqsol opinion: The Rural Development Administration’s introduction of biodegradable resin-coated fertilizer is a forward-thinking response to environmental and regulatory challenges. Field results show substantial reductions in fertilizer use and methane emissions, and the coating decomposes efficiently under composting conditions. Although the product is more expensive than conventional fertilizers, its benefits for soil health, labor reduction, and alignment with upcoming international regulations suggest strong long-term value. Ongoing public-private cooperation will be essential for scaling this technology and achieving sustainable agricultural goals.