Poliakov O. Agrotechnical and bioclimatic features of formation of productivity and quality of sunflower, soybean, oil flax, sesame, spring false flax and rod spurge seeds in southern Steppe of Ukraine

Object of research – processes of growth, development, productivity formation and oil cultures seed quality depending on agrotechnical methods, biological features of cultures and varieties. Goal – bioclimatic basis and development of technological basis for growing high productivity sunflower, soybean, oil flax, spring false flax, sesame, rod spurge under south Ukraine steppe conditions. Methods: field, weighting; measuring; morphophysiological; laboratory; calculation; mathematical statistics. Results: effective technologies for oil plants’ growth were developed and introduced. They bail constant productivity rate for sunflower at 2.3-2.5 ton per ha, for soybean at 2.2-2.6 ton per ha, for oil flax at 1.7-2.0 ton per ha, for sesame at 1.3-1.5 ton per ha, for spring false flax at 1.3-1.5 ton per ha and for rod spurge at 1.6-1.8 ton per ha. Research results are introduced on an area covering over 422000 ha. Novelty: for the first time in south Ukraine steppe conditions the bioclimatic resources for effective growth of new varieties and hybrids of oil plants are defined. They are based on the laws of growth, development and productivity formation according to weather conditions and agromethods. Agromethods of high productivity obtaining and seed quality indexes elevation were established. Economical and energetic efficiency of growing sunflower, soybean, oil flax, sesame, spring false flax and rod spurge are established. Department – agriculture.