The correct answer is 1, 2 and 3. Key Points Nanotechnology monitors a leading agricultural controlling process, especially by its miniature dimension. Additionally, many potential benefits such as Enhancement of food quality and safety, Reduction of agricultural inputs, Enrichment of absorbing nanoscale nutrients from the soil, etc. Hence options 1 and 2 are correct. Reduce the number of spread chemicals, minimize nutrient losses in fertilization Increased yield through pest and nutrient management and the detection and treatment of diseases. Hence option 3 is correct. Nanotechnology has the prospective to improve the agriculture and food industry with novel nanotools for the controlling of rapid disease diagnostic, enhancing the capacity of plants to absorb nutrients among others. The significant interest of using nanotechnology in agriculture includes specific applications like nano fertilizer and nano pesticides to trail products and nutrient levels to increase the productivity without decontamination of soils, waters, and protection against several insect pests and microbial diseases. Nanotechnology may act as sensors for monitoring the soil quality of the agricultural field and thus it maintains the health of agricultural plants.