[en] The accident at the Chernobyl NPP was the most serious radiation accident ever. Large areas of Europe (> 200 000 km²) were contaminated with ¹³⁷Cs (> 0.04 MBq.m^-2) of which 71% with a population of more than five million people was in Belarus, Russian Federation and Ukraine. The unprecedented scale and consequences of the accident required the development of effective remediation approaches for long term contaminated ecosystems in the most affected rural areas. Therefore, the IAEA organized more than 20 regional and national projects supporting the recovery of the areas affected by the Chernobyl accident with the total budget around 15 million USD. About 100 field missions of expert teams to support the recovery of the affected regions were organized For the first time in the world practice, long term agricultural remedial actions were developed, tested and implemented on 4.5 million ha of agricultural land. The remedial options were the most efficient in reducing dose, averting 30-40% of the collective internal dose to the affected population. International teams of experts from European countries developed an approach of the involvement of stakeholders in the process of rehabilitation and provided mutual transfer of experience of best remediation practice. The presentation provides a critical evaluation of the management options implemented in agriculture following the Chernobyl accident and experience of their application in Belarus, Russian Federation and Ukraine. Main lessons learned based on the review of the remediation experience in affected areas are presented. (author)