MODIFICATIONS OF THE PHYSICAL PROPERTIES OF THE PRELUVOSOIL FROM ORADEA UNDER DIFFERENT BASE TILLAGE OF THE SOIL AND THE INFLUENCE ON WHEAT YIELD PUBLISHED

Maria Şandor, Cornel Domuţa, Cornelia Ciobanu
The paper is based on the researches carried out in a long term trial placed in 1995. The most unfavourable values of the bulk density, total porosity, and penetration resistance were determined in the variant with disk roller; it is followed by variant with plough land of 12 cm depth and chisel; the most favourable values were registered in the variant with summer plough land of 20 cm depth. In the last 3 years, in comparison with the variant of summer plough land of 20 cm, in the others variant the lost yield were of 27,2-49,2% in the variant with disk roller,, of 19,1-25,4% in the variant with chisel and of 11,8-32,1% in the variant with plough land of 12 cm. The results emphasized the importance of summer plough land in the conditions of the soil with 31.5% colloid clay.
bulk density; total porosity; penetration resistance; hydraulic conductivity; plough land; and yield
Presentation: oral

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