Subsurface compaction can be tested by measuring soil penetration resistance with a penetrologger. Compacted soil doesn’t absorb water very well and makes it difficult for plants to establish roots. WSU | Apr 07, 2021 While soil compaction happens below the surface, it has many above-ground impacts on crops. Compacted soil doesn’t absorb water very well, makes it hard for plants to send out roots, inhibits plant nutrient absorption and can reduce crop yield by up to 20%. Now with a three-year $450,000 New Innovator in Food & Agriculture Research Award from the Foundation for Food &...