Influence of fertilizers and terms of use of planting on productivity of topinambur in the upper Volga

The influence of different rates of organic and mineral fertilizers applications, the timing of the use of planting on the yield of tubers and green mass of topinambur cv. Skorospelka and product quality are described in this paper. In conditions of the non-Chernozem zone of the Russia, it is recommended to grow topinambur at least 3 years at the same place resulted in yield on 2-th and 3-th years similar to first year of growing. The application of manure (90 t/ha) and 1/3 NPK doses allowed to get equal yield at first, second, and third year of growing.