From 1980 Mr Semenov started working on the Belaya Dacha farm
In 1988 Mr Semenov led Belaya Dacha's Agrofirm Business.
From 1998 to 1999 Mr Semenov was Minister of Agriculture in the Russian Federation.
From 1999 to 2011 – Mr Semenov was the Deputy of the State Duma of the third, fourth and fifth convocations.
In 2000 Mr Semenov founded and headed the Association of Industrial Unions AIC (ASSAGROS).
Chairman of the Committee of Commerce and Industry of the Russian Federation for the development of agribusiness.
Mr Semenov is an Honored Worker of Agriculture of the Russian Federation.
Mr Semenov has been a supporter of a number of charities.
In 2003 Mr Semenov founded a charity fund, National Enterprise for social initiatives.
Mr Semenov participated in the restoration of St. Nicholas monastery, Ugresh Stauropegial Monastery in Dzerzhinsk.
Mr Semenov is a trustee of the construction of the Temple of the Holy Martyr Victor – Warrior (Damascus) in Kotelniki.
Mr SEmenov was awarded the Order of Friendship Order of the Russian Orthodox Church – Holy Prince Daniel of Moscow, St. Sergius of Radonezh and St. Seraphim of Sarov.
Mr Semenov is an honorary citizen of Kotelniki.