Answer: SOILS

AnswerCrossword Clue
SOILSSmears.
SOILSAgronomists' study
SOILSLoam and loess
SOILSSmirches
SOILSDraggles
SOILSPollutes
SOILSMesses
SOILSAggies' concerns
SOILSSullies
SOILSTaints
SOILSClays.
SOILSMalm et al.
SOILSClay, et al.
SOILSLoam and others.
SOILSAgronomist's concern.
SOILSSmudges.
SOILSFarmers' concerns.
SOILSGreenhouse options
soilsSOIL, to make dirty (soiled)
soilsground
soilsto make or become dirty
soilsthe loose surface layer of the earth
soilsdirt
soilsland
SOILSBefouls
SOILSGarden mixes
SOILSDishonors.
SOILSLoam and marl, e.g.
SOILSGarden mix
SOILSBegrimes
SOILSTheir pH's are often measured
SOILSMakes a mess of
SOILSAgronomists' samples
SOILSMuddies
SOILSAgronomists' concerns
SOILSLoess and loam
SOILSAgronomist's concerns
SOILSMucks up
SOILSSmears mud on
SOILSGets dirty