No-till method

• A. Uses a machine that directly sows seeds into the ground to reduce soil disturbance
• B. Tilts soil to mix residues
• C. Requires deep plowing before seeding
• D. Uses flood irrigation

Answer: (A)

The main idea is to plant seeds without turning the soil, keeping the previous crop residues on the surface to minimize disturbance. The option describes a machine that places seeds directly into the ground while leaving residues intact, which is exactly how no-till works. This approach helps reduce soil erosion, preserve soil moisture, and maintain soil structure and organic matter by avoiding tillage. Other choices describe processes that involve disturbing or turning the soil or focus on irrigation methods rather than seed placement, which are not defining features of no-till.