Object: patterns of variability in quality depending on the time of harvesting, drying, separation, storage, chemical treatment of seeds sweet corn hybrids and optimization of technological processes. Aim: establish patterns of creation quality, to develop optimal methods and parameters of the processes of post-harvest processing, storage and preparation pre-seeds sweet corn hybrids. Methods: laboratory, field, statistical-mathematical, industrial. Novelty: the first time in the northern Steppe of Ukraine established the features of the formation of quality and post-harvest handling of seeds new hybrids of sweet corn. The physical-mechanical properties (mass of 1000 grains, nature, specific gravity), which largely affects the quality and methods of seed treatment, compared with tooth-hybrids. Established the special nature of water yielding capacity of grain, which was more intense in hybrids of sweet corn. Identified individual heat resistance of hybrids, depending on humidity and seed quality, determine the best way of drying. The regularities of the separation of hybrids, determined the optimum number of crop fractions, based on the size and uniformity of seeds. Clarified the parameters of harvesting, drying, separation, which reinforce the resistance of seeds sweetcorn during storage, showed positive effect seeds treatment on field germination and crop hybrids. Results: developed from the research methods of post-harvest processing and preparation for sowing seeds sweet corn hybrids providing improvement of field germination by 9-15% and commodity products to 2,32-2,77 t/ha. New ways are tested in a production environment and implemented in EF "Dnipro", on Erastovskoy and Sinelnikovskoy experimental stations of the Institute of Grain Farming NAAS, where over the period 2009-2010 prepared 4,0-6,2 tons of seeds sugar hybrids sold as part of the area sown 3,5-10,0 ha. Net profit from new ways of processing and preparation of seeds reached 46,5 thousand UAH, profitability increased by 58-113%. Application stage: results of studies included in the scientific-practical recommendations in 2010 for cleaning, handling and storage of maize and scientific guidelines in 2010 "Sweet corn - hybrids, cultivation technology, seed production." The preparation technology of high quality seeds sweet corn of hybrids recommended in 2010 to widespread adoption of scientific development as completed. Received 2 public declarative patent for utility model: "Method of harvesting corn for grain or seed" № 28480 of 10.12.2007 and "Method for fertilizing and sowing seeds" № 39132 of 10.02.2009. Application area: agriculture.
