The correct sequence for the use of coupled implements for land preparation is
Answer Details
The correct sequence for the use of coupled implements for land preparation is plough, harrow, and ridger.
First, the plough is used to turn over and loosen the soil. This makes it easier to remove weeds and other unwanted material from the soil.
Next, the harrow is used to break up large clumps of soil and to level the field. This is important for planting seeds or seedlings, as it helps to ensure that they are evenly distributed across the field and can grow properly.
Finally, the ridger is used to create furrows or ridges in the soil. These furrows can be used to plant seeds or to channel water for irrigation.
Therefore, the answer is plough, harrow, and ridger in that sequence.