H. Botеva* Vegetable Crops Research Institute Maritsa, 32 Bezovsko shoose, 4003 Plovdiv, Bulgaria (Manuscript received 27 April 2016; accepted for publication 31 May 2016) Abstract. Field experiments for the effect of bio-fertilizers: Labin, Bio One, Tecamin, Agriful, Humustim and Bio

Abstract. Bacterial spot of tomato caused by Xanthomonas vesicatoria is an economically important disease that reduces the quality and the production yield. Races Т1, Т2 and Т3 have been differentiated in the natural population of X. vesicatoria. In this research 33 tomato varieties f