The public is invited to a field demonstration of tillage and planting equipment for small farms, Thursday, June 7, 4-6 pm at Ridgeway Farms, 5220 Strawberry Road.  The demonstration will include a chisel plow, spring tooth harrow, bed shaper, plastic mulch layer, flower and vegetable planter, and no-till drill. NRCS equipment expert, Catherine Hadley, will be on hand to talk about when to use different types of tillage equipment and their effects on soil quality.    For more information, call 283-8732 x 108.