Commercial 19:19:19 NPK nano fertilizers are typically formulated using the following methods:
Nano Coating: In this process, NPK nutrients are coated with nano-materials such as polymers or lipids. This coating regulates the release of nutrients, enhances stability, and improves nutrient uptake by plants, optimizing their efficiency in various agricultural applications.
Chitosan Encapsulation: NPK nutrients are encapsulated using chitosan, a biopolymer derived from chitin. This encapsulation provides controlled nutrient release, promotes biodegradability, and contributes additional benefits, such as enhanced plant growth and resistance to environmental stressors.
Direct Nano-Sized NPK: In this method, NPK particles are reduced to the nanoscale, increasing surface area and improving the rate of nutrient absorption by plants, thus ensuring more efficient uptake and utilization.
For companies like Geolife, nano-coating and chitosan encapsulation are the most likely techniques used, as they enable controlled nutrient release and enhance the overall effectiveness of the fertilizer.