EN
Listed features of methodical approach of holding experimental researches of cucumber and melon seed obtaining workflows to check and if necessary correct theoretical assumptions, arguments and conclusions. In the research was used plan Hartley for five three-level factorial plan with the number of experiments equal to 27, which in resolving problems associated with technical objects agricultural production, not previously used. The main optimization criteria, which conducted evaluation of quality of the process, were chosen the loss of seeds and seed purity.