The plant needs different amount of nitrogen depending on its growth stage. Nitrogen-use efficiency for most crops ranges from 30 to 50 percent. A new generation of fertilizers will increase this efficiency from 30 percent to upwards of 80 percent. Smart biosensors and smart delivery systems will help in enhancing productivity in agriculture. Intelligent nano-fertilizers can reduce the amount of nitrogen lost during the crop production.
http://www.biotecharticles.com/Nanotechnology-Article/Intelligent-Nano-Fertilizers-3544.html
