Workers harvest soy in a farm in Correntina, Bahia in this April 1, 2010 file photo. Brazilian farmers are spending like never before on farm equipment, fertilizer and other investments, a possible sea change in rural sentiment that could boost long-term output in a country that barely scratches the surface of its agricultural potential. Picture taken April 1, 2010. To match Analysis BRAZIL-AGRICULTURE/ REUTERS/Paulo Whitaker/Files (BRAZIL - Tags: BUSINESS AGRICULTURE)