The aim of present work was to reveal agricultural utility of wood vinegar as soil conditioner and disease control agent. In the first stage, the effect of various forms of wood vinegar on wheat development and a series of soil chemical characteristics (pH, EC, organic matter, lime, total P and K) was investigated in a greenhouse experiment. In the second stage, in order to test the pest control efficiency of wood vinegar on the cercospora leaf spot of sugar beet, a biocide experiment was conducted by using different application rates of wood vinegar ( 0.5, 1.0, 1.5, 2.0, 3.0 and 4.0%). The results of greenhouse experiment showed that combined treatment of `wood vinegar coated seed+ foliar fertilization` statistically significantly (p < 0.05) increased dry weight, nitrogen and phosphorus contents of wheat and also increased total N, NH4- and NO3-N contents of soil. Biocide application indicated that except for the application rate of 0.5 %, wood vinegar completely inhibited C. beticola development at all application levels. Highly virulent type of C. beticola was inhibited at a rate of 77,4 – 99,1 % by the application of 0.5 % wood vinegar. Consequently, lower level of wood vinegar application was observed to inhibit the development of highly virulent C. beticola species substantially. The present work revealed that wood vinegar can be alternatively used as a biocide agent in vivo conditions.
