1) Caked 2) Compressed 3) Dense 1) Like some trash 2) Tight 
• (a.) Compact; pressed close; concentrated; firmly united. • (imp. & p. p.) of Compact
The degree of soil consolidation that is obtained by tamping with hand tools or, or heavy equipment.
Com·pact'ed (kŏm*păkt'ĕd) adjective Compact; pressed close; concentrated; firmly united. 
Soil that has increased in bulk density due to heavy foot or motor traffic. Many roots cannot penetrate into compacted soil because it is so dense, and compacted soils often become waterlogged or starved for oxygen which further impact the tree