V. Koteva1*, S. Kostadinova2 1Institute of Agriculture, 1 Indusrtialna, 8400 Karnobat, Bulgaria 2Department of Agrochemistry and Soil Science, Faculty of Agronomy, Agricultural University, 12 Mendeleev, 4000 Plovdiv, Bulgaria Abstract. This investigation was aimed at determining the c

V. Valcheva, K. Trendafilov, S. Todorova Abstract. The influence of mineral fertilization with nitrogen, phosphorus and potassium on the indicators of harmful soil acidity and on the composition of plant biomass from vine varieties Sauvignon Blanc, Chardonnay, Cabernet Sauvignon and M

M. Nankov, L. Glogova Abstract. Experience was taken for 50years of typical chernozem soil type in the experimental Field of the Maize Research Institute – Kneja. The study take in period 2000-2010 year. The cultivation of wheat in the unit with maize has positive effect on performanc

A. Ivanova, N. Tsenov Abstract. . Drought is a climatic specificity of the geography in Bulgaria. Under the effect of global climatic changes, drought becomes increasingly intense. A field trial investigated the effect of various mineral fertilization norms on the productivity of comm

During the period 2005-2008 at the Experimental Station of Agriculture in the town of Sredetz, based on field experiment with organo-mineral  fertilization of grass mixture comprising: alfalfa (Medicago sativa L.)-60%, tall fescue (Festuca arundinaceae, Schreb)-20%, and cocksfoot (Dac

A study has been conducted at the Experimental Station of Agriculture, Sredets to establish the effect of predecessor and mineral fertilization on chemical composition and energy value of wintering oats grain. The object of this study was wintering oat (Avena sativa L) variety Jubile