YIELD OF THE ABOVEGROUND PARTS AND TUBERS OF JERUSALEM ARTICHOKE (Helianthus tuberosus L.) DEPENDING ON PLANT DENSITY Journal title: Acta Scientiarum Polonorum – Agricultura Authors: Ewa Szpunar-Krok, Dorota Bobrecka-Jamro, Sabina Grochowska, Jan Buczek Subject(s):