G. Panayotova1*, S. Kostadinova2, S. Stefanova-Dobreva3, A. Muhova3 1Department of Plant production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Department of Agrochemistry and Soil Science, Faculty of Agronomy, Agricutural University, 4000 Plovdiv, Bulgari

K. Trendafilov, V. Valcheva, S. Todorova Abstract. In conditions of combined field experiment the influence of liming with Ca(OH) was studied in rates of 1,0, 2,5 and 5,0 t/ha on the input of nitrogen, 2 phosphorus and potassium in the leaves of fertility vines from varieties Sauvigno

D. Terziyski, L. Hadjinikolova Abstract. The aim of this study is related with the characterization of the chemical parameters of sediments obtained from intensive carp ponds, as a natural biological product. Vertical differentiation in the levels of the studied chemical indicators of