Ulrich, RudoplhAnderson, Marvin2021-02-252021-02-251949-09-01https://dr.lib.iastate.edu/handle/20.500.12876/95795<p>Cultivation changes the surface soil. Yes, it loosens up the soil-but only temporarily. Actually, cultivation packs the soil tighter. That cuts down the large air spaces in your soil and makes it harder for water to penetrate it.</p>articleisulib-bepress-aws-west146120020083farmscience/vol4/iss3/6Agriculture