Sidedress Pro Thurston Manufacturing Co. features their Legacy Applicator rig in a new 42-foot SD design - for sidedress. Published on: Mar 28, 2011 Tweet Post to Your Wall. Email Story RSS Permalink Print The rise in fertilizer sidedress popularity is an opportunity the folks at Thurston Manufacturing Co., couldn't pass up. They're offering their Legacy Applicator rig in a new 42-foot SD design - for sidedress. The unit features the same 6x6 mainframe design and offers you more options for managing fertility on your farm. For more information, call (800) 658-3127, or visit www.thurstonmfg.com.Legacy SD