Purpose. To evaluate the productivity of winter pea as affected by nitrogen fertilizer and seed inoculation under the conditions of the Right-Bank Forest-Steppe of Ukraine.
 Methods. Field and laboratory research methods were used to conduct research to establish the peculiarities of the formation of winter pea productivity.
 Results. Based on the research, it was determined that the factors of inoculation of seeds with Optimize Pulse and the use of spring nitrogen fertilization at an application rate N45 played a decisive role in the formation of a high productivity and protein content in winter pea of ‘NS Moroz’ variety. Thus, it was found that the application of N15 in autumn followed by spring fertilization with N45 formed the height of pea plants of 79.5 cm and the number of beans per plant 12.2. However 1000-seed weight was the best in the treatment with spring application of N30, although it did not differ statistically from the previous treatment of the experiment.
 Conclusions. It was found that the yield of pea increased significantly under the integrated use of nitrogen fertilizer. The effect of fertilizer was especially positive with the application of starting doses in autumn (15 kg/ha) and fertilization of plants after vegetation restoration (45 kg/ha). The yield averaged 3.69 t/ha. However, inoculation of seeds in general contributed not only to a better supply of winter pea plants with nitrogen but also to the formation of a higher yield. According to the results of our research, we noted an increase in the protein content in the seeds as the amount of nitrogen fertilizers used after the restoration of vegetation by pea plants. Thus, in the case of application of N15 for autumn application in combination with spring feeding with N45, the protein content was 23.95% in non-inoculated and 24.93 % in inoculated treatments of the experiment. It was found that along with the improvement of plant nutrition conditions for winter peas by inoculation of seeds with strains of nitrogen-fixing microorganisms of Optimize Pulse plant health product, the average plant height increased by 7.8 cm, the number of beans per plant by 1.1, and the 1000seed-weight by 16.8 g.