MOSCOW — Russian President Vladimir Putin on Wednesday hit back hard against countries that have imposed sanctions over the Ukraine crisis, ordering trade cuts that an official said would include a ban on all imports of agricultural products from the United States.

The full list of products to be banned or limited for up to one year is to be published Thursday. But the state news agency RIA Novosti quoted Alexei Alexeenko of Russia’s plant and veterinary oversight service as saying “from the USA, all products that are produced there and brought to Russia will be prohibited.”

Alexeenko also was quoted as saying he thinks all fruits and vegetables from European Union countries will also be banned.

The move follows the latest round of sanctions against Russia imposed by the EU last week, which for the first time targeted entire sectors of the economy.

President Obama said Wednesday that U.S. sanctions against Russia over its actions in Ukraine are straining the Russian economy, which has “ground to a halt.”

The U.S. and the EU have accused Russia, which annexed Ukraine’s Crimean Peninsula in March, of fomenting tensions in eastern Ukraine by supplying arms and expertise to a pro-Moscow insurgency, and have imposed asset freezes and loan bans on a score of individuals and companies.