Maize cultivation on large areas in Moldova (about 400 000 ha per year) is due to the tradition and experience of cultivation, favorable weather conditions for growth and development of this culture; availability adaptability hybrids appropriate growth conditions; results achieved over the years and achieve production safety in the most difficult years; The Institute of crop science "Porumbeni" has a scheme to create, test and promote new hybrids of corn, which includes the following steps: combinations new hybrid outlined in laboratories improvement after two years of testing, are studied in detail in the test for assessing the comparative culture of competition and ecological network. Testing hybrids in order to be admitted for use in the production process involves subjecting the new hybrid test the value for cultivation and use (VCU) is carried out according to traditional methods of assessing comparative culture of competition include the 150 hybrids, belonging to the six groups of maturity (25 hybrids in each group), tested at two densities (as many as three replications each), the surface plots of 10 m2. Hybrids are randomized. Each set is used as 2-3 hybrids standard, including 1-2 and a hybrid known their foreign origin. At these moments includes the biochemistry sector, studying hybrids after carotene, protein, oil, dextrin, depending of the direction of the hybrid. The ecological culture is studied annually 30-50 hybrids, select the comparative culture of competition after the first year of testing. Environmental testing hybrids FAO 150-300 is performed under appropriate conditions of growth in two locations in the north of the Republic of Moldova, Belarus, Russia. For hybrids FAO 350-500 ecological tests are performed 4-5 places of the country. Laboratory data serve as a basis for including of new hybrids in the official trials. In the end, VCU test serves as the basis for the admission of the new hybrid in production, and the test DUS for the grant of its legal protection. Only hybrids that have demonstrated performance against standard for 2 years in a row in the competition culture and benefit from a standard in the first year at all ecological points are submitted for official testing. Official tests are submitted only hybrids that have demonstrated performance to standard two years in a row in the culture of competition and lead to standard first year every green. All at once, in addition, the new hybrid should demonstrate advantage over foreign hybrid used as a standard. So as criteria for promotion of new maize hybrids are as follows productivity, precocity resistance to disease, pests and unfavorable weather conditions, falling and breaking resistance, mechanical cultivation suitability to industrial production, and the ability of the seeds. Implementation in the producing new hybrids would ensure achieving outstanding results require mandatory testing them at their agronomic locale expected to be grown.