To determine the consequences of the cyclic development in the agrarian sector and evaluate the shifts in the structure and the performance of plant production branches due to the course of the transformational and agrarian crises and inter-crisis periods, to disclose the specifi cities of anti-crisis regulation in the agrarian sector in the postwar time. Methods. Common scientifi c methods were applied, including historical and logical, dialectic and systemic analysis, theoretical generalization, analysis and synthesis, variation dynamics, comparison, grouping, indexing, and table methods. Results. The cyclic character of the development in the agrarian sector and its impact on plant production were studied, and the results demonstrated that agrarian crises are an imminent stage of this process, and their "trough" is a starting point to launch a new cycle. It was found that the prolonged nature of agrarian crises inhibited the restoration cycle so much that the temporal breaks with the cycles of previous periods decreased considerably, and the periods of their complete revolution shortened due to which the scientists distinguish just two phases of crises now instead of traditional four phases: recession and uprising. It was determined that during the transition to new forms of management, there was an obvious destruction of the material resources of plant production with the refusal to keep to the crop rotation order. Still, the redistribution of the land and their division into shares stimulated the organization of modern agrarian enterprises yet delayed the agrarian and land reforms considerably. Due to this factor and other reasons, agricultural plant production at the "trough" of the transformational crisis decreased twice. The analysis demonstrated that the restoration of plant production occurred 12 years after the institutional crisis, followed by its registered rise until the moment of the Russian aggression -up to 156 %, and the development of the industry was closely related to the cyclic character of the functioning in the agrarian sector in general. Due to military actions, the manufacture of plant products has been dropping rapidly for the past two years. It was found that the results of the basic year were achieved differently in terms of different crops: the results for grains, grain legumes, and technical crops were achieved only in 2008; for vegetables and potatoes -in 2000, the yield of sunfl ower constantly increased, even despite agrarian crises; the performance of sugar beet decreased more than four times in 2021; the results for fruit and berries did not match those of 1990. The main directions of restoring the agrarian resource potential and renewing the manufacture of plant products in the postwar period were suggested. Conclusions. Modern processes of agricultural production are subject to the cyclic character of development, the trends of which are clearly copied in the plant production development. It was proven that agriculture reached the level of 1990 by the production volumes only in 2019, and the specifi city of its development lies in the fact that after a short descending trend, there was a transition to the ascending trend, improving the situation considerably, but it was often broken by the lower part ("trough") of agrarian crises and local drops (every other year). It was found that the restoration of plant production after a deep institutional crisis was registered in 2011, and in the subsequent years, there was a clear copying of the tendencies in the development of agrarian crises, but in terms of different crops, the rises from the "trough" of the transformational crisis took place in different time periods. The evaluations confi rm that in plant production, the "trough" of each subsequent agrarian crisis was higher than that of the previous one, but it was followed by the ascending trend of the
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