In recent years, in connection with the needs of animal husbandry in feed and in order to expand the range of types of crops, the staff of the feed production laboratory brought new promising annual fodder crops, taking into account biological characteristics and adaptive capabilities in the conditions of the North. In this regard, it is necessary to study new varieties and types of high-protein annual fodder crops. These tasks can be solved, first of all, by selecting the most productive forage crops and improving the technologies of their cultivation and harvesting. The article presents the results of research conducted at the Yakut Research Institute of Agriculture. Scientific research on the study of new promising forage crops was carried out on site 30 "A" (on the basis of the YANIISKH feed production laboratory) on the second above-floodplain terrace of the Lena River in 2016-2018. Nemyugyuntsy village of the Khangalassky ulus of the Republic of Sakha (Yakutia). The influence of three sowing periods on the yield of promising annual fodder crops is studied. The results of research on the growth, development, yield, nutritional value of promising annual crops are presented. Productivity for three sowing periods during sunflower harvesting reached feed units of 1.2 - 2.7 t/ha, crude protein – 2.5-5.1 t/ha, corn – feed units of 0.7 - 2.2 t/ha, crude protein – 2.8 - 6.9 t/ha, oilseed radish feed units of 1.1 - 1.3 t/ha, crude protein 3.3- 5.0 t/ha . Optimal terms of sowing and harvesting of promising annual fodder crops for the production of high–quality juicy and bulky feeds have been established - 1 term (sowing - I decade of June, harvesting - II decade of August); 2 term (sowing -II decade of June, harvesting - III decade of August) in the phase of mass flowering and throwing out panicles of tested fodder crops.