Some might say a president who gained power with the motto “drain the swamp” might appear a boon for agriculture. But whether he turns out that way will require a more measured tone by Donald Trump when in office than that he voiced to win power. Sure, farmers may well enjoy something of a honeymoon for now from his victory, which is likely to take the dollar on a weaker course, for now, than it would have done had Mr Trump’s Democrat rival, Hillary Clinton, won the vote. The greenback fell…