The paper deals with the effects of ameliorative tillage on the dynamics of some important productive morphologic characteristic in two crops sunflower and maize. The trial was carried-out at the Maize Research Institute 'Zemun Polje' experimental fields in village Krnjesevci on meadows chernozem soil type. The following ameliorative and conventional tillage systems were included in investigations: 1. Ameliorativel tillage system - (ATS) - includes new types machines for field sistematisation-scrapers (USM 5) in autamn, drainage plow on the depth 60-80 cm, and subsoiling with heavy vibratory subsoiler VR 5. on 30-35 cm depth. After basic tillage we prepared soil for seeding with preparation by disking and harrowing 2. Conventional tillage -...