R. Popova1*, G. Dobrevska1, H. Djugalov1, A. Matev2, L. Dospatliev3, A. Stoyanova4

1Department of Fruit Growing, Faculty of Viticulture and Horticulture, Agricultural University, 12 Mendeleev, 4000 Plovdiv, Bulgaria
2Department of Melioration and Geodesy, Faculty of Viticulture and Horticulture, Agricultural University, 4000 Plovdiv, Bulgaria
3Department of Pharmacology, Animal Physiology and Physiological Chemistry, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria
4Department of Plant Production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria

Abstract. Wooden filings divided into two fractions were used as an intermixture for the covering soil layer which served as an additional rooting of shoots of different origin in an apple stoolbed. The purpose was to evaluate whether some soil indicators change. In this respect, the levels of humus, carbonates, pH and soil moisture were measured. The quantity of soil carbonates was low (under 1%), pH fluctuates from weakly acidic to weakly alkaline, and the amount of the organic substance as well as the current moisture in the soil with small fraction of wooden filings showed higher values in comparison with the large fraction one.