How To Use Power In Your Garden Author:By the editorial staff of Organic Gardening and Farming Black and white photography. Some great pics of now-vintage farm machinery. Building soil fertility, judging machinery, rotary tillers, compost shredders, power mowers and tractors, soil-building crops, growing vegetables, ripple tillage, mechanized composting, rotary mowers, building your own gardening machines, compost sifters, pulping machines.