SAO PAULO (Reuters) -Leading global agricultural machinery manufacturer Deer & Co.'s sales in Brazil could fall by one digit in 2026 amid global uncertainties related to U.S. President Donald Trump's tariffs and high interest rates in the South American country, an executive said on Thursday. "Today, a positive scenario would be (like) 2025, but (sales are) likely to decline," Antonio Carrere, vice president of sales and marketing at the company's Brazil unit, told Reuters on the sidelines of an industry event, adding that a mid-single digit decline was a possibility.