Show heavy compact reason light roll roll poll dry warm heavy where practice same rule furrow ito deep ma done later temperature tower tower lower deep shallow kansas state agricultural college salmon reading taken ibis poll dry season therefore necessary plant order get corn moist earth season soil warm great depth course wise plant down cold soil soil noll light loose soil soil surface DEPTH PLANTING CORN moisture content problem light soil fact fact fast moisture content depth plant corn cecil salmon department kansas state agricultural college warmth ground type type typo soil upon plant done help help hell determine flit flit tilt depth corn depth vary four rule corn reason reason season later tire salmon reason course |