engleski

The effect of ameliorative tillage on some important soil physical properties and grain yield of sunflower, maize and winter wheat

grain yield sunflower, maize and winter wheat. The trial was carried out at the Maize Research Institute "Zemun Polje" experimental fields in village Krnjesevci near Belgrade on meadows chernozem soil type. The folowing ameliorative and conventional tillage systems were included in investigations: 1. Ameliorative tillage system - (ATS) – includes new types machines for field sistematisationscrapers (USM 5) in autumn, drainage plow on the depth 60-80 cm, and subsoiling with heavy vibratory subsoiler (VR 5) on 30-35 cm depth. After basic tillage soil was prepared for seeding with preparation by disking and harrowing 2. Conventional tillage - (CT) - in this case control includes ploughing to the depth of 30-35 cm + presowing preparation by disking and harrowing. After those ameliorative measures first crops in 2008 yr were maize and sunflower. Third crop in 2009/2010 were winter wheat. The following soil properties were studied: bulk density, total porosity, moisture weight and volume percent, and total water content in different layers in m3, in tillering stage of winter wheat on the different depth 0-10cm ; 10-10cm ; 20-30cm. Ameliorative tillage systems have aftereffect for all investigated properties of soil on this heavy soil type compared with control. This tillage system increase significantly grain yield sunflower, maize and winter wheat compared with conventional tillage systems.

ameliorative tillage ; conventional tillage ; physical properties of soil ; grain yield ; sunflower ; maize ; winter wheat

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