to save them. It poses a very serious threat to good soil structure. Delicate soil pores are easily crushed, decreasing their c apacity for water and air movement and hindering root growth. Wet soil is particularly vulnerable, because water lubricates soil particles and loosens binding agents. Small particles slip between the larger particles, filling the pore spaces. Loose soils will compact more than tight soils, and soils that have a broad range of par ticle sizes can be more severely compacted than
more uniform soils.