(Bloomberg) -- Angry farmers in Europe are adding to pressure on tractor makers already facing a downturn in the US and Brazil as crop prices retreat.Most Read from BloombergThe Brutal Reality of Plunging Office Values Is HereDip Buyers Wade Back In to Fuel Wall Street Gains: Markets WrapMusk Says Putin Can’t Lose in Ukraine, Opposes Senate BillIsrael Pulls Out of Peace Talks Over ‘Delusional’ Hamas DemandsLyft’s CEO Says ‘My Bad’ on Margin Error, ‘It Was One Zero’Farmers across the European Uni