Final answer:
To properly use a planting bar or posthole digger, hold the handles together, thrust the blades into the ground, then separate the handles to remove the soil. This technique creates a hole for planting, akin to no-till farming methods. A measuring tape can be utilized to measure garden plot dimensions.
Step-by-step explanation:
To dig a hole with a planting bar or a posthole digger, one must hold the handles together and thrust the blades into the soil. After the blades are pushed down into the ground, pulling the handles apart will then squeeze the soil between them, allowing for the removal of the dirt and creating a hole of desired depth. It's similar to the no-till farming practice where a narrow trench is created for seed planting, which avoids disturbing the soil too much and maintains the agricultural ecology. Additionally, the dimensions of a garden plot, which may be a part of this gardening or farming process, can be measured using a measuring tape to ensure accurate spacing for holes or planting trenches.