Subsurface irrigation is a method of watering plants by delivering water directly to the root zone below the soil surface. This type of irrigation system helps reduce water waste by minimizing evaporation and runoff, and also prevents weed growth and disease by keeping the foliage dry. Subsurface irrigation typically involves buried drip lines, soaker hoses, or porous pipes that slowly release water into the soil, providing a more efficient and precise method of watering plants compared to surface irrigation techniques. This technology is often used in landscaping, agriculture, and horticulture to promote healthier plant growth and conserve water resources.