Question

why the soil around the seedlings should be compacted after planting

Answer 1

Answer:

☞Plants suffer in compacted soil because the soil particles are too close together and do not allow water to penetrate the surface or provide oxygen to the roots. Without water and oxygen, the roots cannot carry nutrients to the rest of the plant.

Answer 2

Answer:

Soil compaction increases soil density. Roots are less able to penetrate the soil and are generally shallow and malformed. Because their growth is restricted, they're less able to exploit the soil for nutrients and moisture.