What is the primary purpose of utilizing organic matter in backfilling a planting pit?

The primary purpose of utilizing organic matter in backfilling a planting pit is to enhance soil nutrient content. Organic matter is rich in essential nutrients, such as nitrogen, phosphorus, and potassium, which are crucial for plant growth. When incorporated into the soil, it improves its overall fertility, providing a more favorable environment for the new plant to establish root systems and thrive. Additionally, organic matter contributes to the soil's microbial activity, which plays a vital role in breaking down nutrients and making them available for plant uptake.

While enhancing nutrient content is a key benefit, organic matter also indirectly aids in other aspects such as improving soil structure and aeration. However, the fundamental reason for including it in backfill is primarily its contribution to soil fertility, which is critical for the successful establishment of plants in new planting sites.