| Show sima bed OB dry must harrow end coup foil foil soil below face surface advantage surface land best best beat wing sweep object lOB implement thy wide enough cover ground trip held held field slow slow blow Ilo Ilo frame las las lin grain drill implement mate area laud team implement kind cover strip held held field 16 16 IG feet wide require four addition hat hat list hat list nat dry lin important point cost dry extra nine thing area land land lurid ore large grain fields four often sec barrow barrow harrow fit boy cover 16 feet land before row drill frame carry kill mulch surface ground seed box drill bean crop arc proper crop ample plant cultivate trip kept sharp kill spike harrow throw dirt depth break raise surface fine dirt sift down where around harrow fine compact soil soil sol surface 8 KY lure lure jure sur alta preparation SEED BED far across NW |