Which of the following is/are the advantage/advantages of practising drip irrigation? 1. Reduction in weed 2. Reduction in soil salinity 3. Reduction in soil erosion Select the correct answer using the code given below.

1. Drip irrigation delivers water directly to the root zone of plants. This limits the water available on the soil surface between plants, thereby suppressing weed growth. Thus, Reduction in weed is a key advantage. (Statement 1 Correct) 2. While drip irrigation allows for better management of water application and can potentially reduce the overall salt load compared to inefficient methods, it does not inherently guarantee a reduction in soil salinity. Improper management, especially with saline water, can lead to salt accumulation near the root zone. Therefore, this is not considered a universally applicable advantage in all conditions. (Statement 2 Incorrect) 3. Drip irrigation applies water slowly and minimizes surface runoff. This significantly reduces the potential for water to carry away soil particles. Hence, Reduction in soil erosion is a significant advantage compared to surface irrigation methods. (Statement 3 Correct) 4. Therefore, the correct statements identifying the advantages are 1 and 3.