The soil, compacted by heavy machinery, and dosed with nitrates to produce increasing crop yields, has been starved of the humus and nutrients essential for its long-term fertility.
(The soil; compacted; by heavy machinery) (The soil, compacted by heavy machinery; has been starved; of the humus and nutrients essential for its long-term fertility)
The soil The soil, compacted by heavy machinery
compacted has been starved
by heavy machinery
of the humus and nutrients essential for its long-term fertility