Nutrient use efficiency (NUE) plays an important role in improving crop productivity while reducing excessive fertilizer use in agriculture. However, a significant portion of applied nutrients is lost through leaching, runoff, and volatilization, resulting in economic losses and environmental pollution. Nano sensor technology has emerged as a promising tool to address this challenge by enabling precise monitoring of soil nutrients and plant conditions. These sensors can detect small changes in nutrient levels and provide real-time information for better nutrient management. By supporting precise fertilizer application, nano sensors have the potential to enhance NUE and promote sustainable agricultural practices.