Large ag equipment unit sales rose 34.2% year-over-year in January aided by easy comparisons, according to a note to investors from RW Baird analyst Mircea Dobre. Combined U.S./Canada large ag equipment unit sales were up 34.2% in January vs. +4% in December, benefiting from easy comparisons as prior year sales were plagued by lack of inventory. By category, row-crop tractors were up 22.3%, 4WD tractors were up 6.3% and combines were up 141.7%. U.S. dealer…